5071A with ATTENTION flashing
Hi
Today I met one HP 5071A with option 001 at one secondhand equipment company. This one can not enter CONTINUOUS OPERATION status, the ATTENTION led flashes.
There is a "Low cs signal with max Emult" error in the log. I have run the self-test, and it stopped at "9.2GHz PLL test 10.3v". I can only remember the the pump current was 0.8uA or less, C-filed was about 12mA.
The seller is asking for about 4000$, I am wondering if it's repairable. Since it is a "HP" branded 5071A with 001 option, I do not know if the Cs tube is dying or not, according to the two current values?
How do I know one 5071A/5061/5062 is dying or is still in good health by the readings?
Thanks
de BI7LNQ
Hi Li,
The "Low cs signal with max Emult" is the classic error indicating it's out of gas. That's a bad sign. But the "9.2GHz PLL test 10.3v" is something else. So maybe there's hope? Or maybe you have two big problems instead of one. Rick might know.
For additional information, connect a PC to the serial port and capture the diagnostic information. Right after power up, press TOP -> CONFIG -> LOG -> SERVICE to set the unit into verbose diagnostic mode. You should see lines print every now and then as it undergoes self test and calibration.
You can also press TOP -> INFO -> PRINT to get a nicely formatted summary. Or TOP -> LOG -> PRINT to get the entire log history. That sometimes has lots of clues. The advantage of using the serial port is you get a permanent record of all this information. Viewing all this by the LCD screen can be tedious.
There's more information in 05071-90040, the 5071A Assembly-Level Service Manual, copies of which are on the web. Also 05071-90041, Operating and Programming Manual.
/tvb
----- Original Message -----
From: "Li Ang" 379998@qq.com
To: "time-nuts" time-nuts@febo.com
Sent: Thursday, November 03, 2016 8:10 AM
Subject: [time-nuts] 5071A with ATTENTION flashing
Hi
Today I met one HP 5071A with option 001 at one secondhand equipment company. This one can not enter CONTINUOUS OPERATION status, the ATTENTION led flashes.
There is a "Low cs signal with max Emult" error in the log. I have run the self-test, and it stopped at "9.2GHz PLL test 10.3v". I can only remember the the pump current was 0.8uA or less, C-filed was about 12mA.
The seller is asking for about 4000$, I am wondering if it's repairable. Since it is a "HP" branded 5071A with 001 option, I do not know if the Cs tube is dying or not, according to the two current values?
How do I know one 5071A/5061/5062 is dying or is still in good health by the readings?
Thanks
de BI7LNQ
Hi Tom
Thanks for the info. I think I should pay a visit to this 5071a again. There are 5 more 5071a 200km away, I need to visit them next week. :)
regards
Li Ang / BI7LNQ
---Original---
From: "Tom Van Baak"tvb@LeapSecond.com
Date: 2016/11/4 00:42:46
To: "Discussion of precise time and frequency measurement"time-nuts@febo.com;
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Li,
The "Low cs signal with max Emult" is the classic error indicating it's out of gas. That's a bad sign. But the "9.2GHz PLL test 10.3v" is something else. So maybe there's hope? Or maybe you have two big problems instead of one. Rick might know.
For additional information, connect a PC to the serial port and capture the diagnostic information. Right after power up, press TOP -> CONFIG -> LOG -> SERVICE to set the unit into verbose diagnostic mode. You should see lines print every now and then as it undergoes self test and calibration.
You can also press TOP -> INFO -> PRINT to get a nicely formatted summary. Or TOP -> LOG -> PRINT to get the entire log history. That sometimes has lots of clues. The advantage of using the serial port is you get a permanent record of all this information. Viewing all this by the LCD screen can be tedious.
There's more information in 05071-90040, the 5071A Assembly-Level Service Manual, copies of which are on the web. Also 05071-90041, Operating and Programming Manual.
/tvb
----- Original Message -----
From: "Li Ang" 379998@qq.com
To: "time-nuts" time-nuts@febo.com
Sent: Thursday, November 03, 2016 8:10 AM
Subject: [time-nuts] 5071A with ATTENTION flashing
Hi
Today I met one HP 5071A with option 001 at one secondhand equipment company. This one can not enter CONTINUOUS OPERATION status, the ATTENTION led flashes.
There is a "Low cs signal with max Emult" error in the log. I have run the self-test, and it stopped at "9.2GHz PLL test 10.3v". I can only remember the the pump current was 0.8uA or less, C-filed was about 12mA.
The seller is asking for about 4000$, I am wondering if it's repairable. Since it is a "HP" branded 5071A with 001 option, I do not know if the Cs tube is dying or not, according to the two current values?
How do I know one 5071A/5061/5062 is dying or is still in good health by the readings?
Thanks
de BI7LNQ
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Hi Tom
I have collected the log from it. Log level is service. The 9.2G pll pass the test today. The log during the power-up process is also included.
Regards
Li Ang / BI7LNQ
scpi >
MJD 0 02:02:18
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -9.55 C
Osc. Oven: -9.1 V Ion Pump: 0.4 uA
HW Ionizer: -0.1 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.2 C
scpi >
scpi > ?
E-103> exit
E-113>
E-113> Log status: One entry
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> scpi >
scpi >
Performing hardware tests
PASS: CBT register test
PASS: DDFS register test
PASS: Servo register test
PASS: Interface register test
PASS: Pps register test
Warming up
Osc. oven is up
MJD 0 00:00:29
CBT ID: 3128A00642(H)
Status summary: Warming up
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 1524 V Signal Gain: 14.4 %
CBT Oven: 20.6 V CBT Oven Err: -9.55 C
Osc. Oven: -9.0 V Ion Pump: 0.4 uA
HW Ionizer: 1.0 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.2 V -12V supply: -12.2 V
+5V supply: 5.4 V Thermometer: 45.0 C
scpi > Cs oven is up
F(z) = 39948.9 Hz
Low Cs beam signal = 3
Raising emult voltage...
Low Cs signal (37) with max Emult
Fractional freq. offset is -0.000000e+00
Fatal Error (see Log)
scpi >
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
MJD 0 00:13:46
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: 2 entries
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -8.22 C
Osc. Oven: -9.1 V Ion Pump: 1.0 uA
HW Ionizer: 0.0 V Mass spec: 12.2 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.7 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.4 C
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
---Original---
From: "Tom Van Baak"tvb@LeapSecond.com
Date: 2016/11/4 00:42:46
To: "Discussion of precise time and frequency measurement"time-nuts@febo.com;
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Li,
The "Low cs signal with max Emult" is the classic error indicating it's out of gas. That's a bad sign. But the "9.2GHz PLL test 10.3v" is something else. So maybe there's hope? Or maybe you have two big problems instead of one. Rick might know.
For additional information, connect a PC to the serial port and capture the diagnostic information. Right after power up, press TOP -> CONFIG -> LOG -> SERVICE to set the unit into verbose diagnostic mode. You should see lines print every now and then as it undergoes self test and calibration.
You can also press TOP -> INFO -> PRINT to get a nicely formatted summary. Or TOP -> LOG -> PRINT to get the entire log history. That sometimes has lots of clues. The advantage of using the serial port is you get a permanent record of all this information. Viewing all this by the LCD screen can be tedious.
There's more information in 05071-90040, the 5071A Assembly-Level Service Manual, copies of which are on the web. Also 05071-90041, Operating and Programming Manual.
/tvb
----- Original Message -----
From: "Li Ang" 379998@qq.com
To: "time-nuts" time-nuts@febo.com
Sent: Thursday, November 03, 2016 8:10 AM
Subject: [time-nuts] 5071A with ATTENTION flashing
Hi
Today I met one HP 5071A with option 001 at one secondhand equipment company. This one can not enter CONTINUOUS OPERATION status, the ATTENTION led flashes.
There is a "Low cs signal with max Emult" error in the log. I have run the self-test, and it stopped at "9.2GHz PLL test 10.3v". I can only remember the the pump current was 0.8uA or less, C-filed was about 12mA.
The seller is asking for about 4000$, I am wondering if it's repairable. Since it is a "HP" branded 5071A with 001 option, I do not know if the Cs tube is dying or not, according to the two current values?
How do I know one 5071A/5061/5062 is dying or is still in good health by the readings?
Thanks
de BI7LNQ
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
According to the Log, "CBT Oven Err: -9.55 C" might be something wrong. However, I can't find the correct range in the manual. Does anyone have the information about this parameter?
Regards
Li Ang
------------------ Original ------------------
From: "Li Ang";379998@qq.com;
Date: Wed, Nov 9, 2016 02:48 PM
To: "Tom Van Baak"tvb@leapsecond.com; "Discussion of precise time and frequency measurement"time-nuts@febo.com;
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Tom
I have collected the log from it. Log level is service. The 9.2G pll pass the test today. The log during the power-up process is also included.
Regards
Li Ang / BI7LNQ
scpi >
MJD 0 02:02:18
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -9.55 C
Osc. Oven: -9.1 V Ion Pump: 0.4 uA
HW Ionizer: -0.1 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.2 C
scpi >
scpi > ?
E-103> exit
E-113>
E-113> Log status: One entry
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> scpi >
scpi >
Performing hardware tests
PASS: CBT register test
PASS: DDFS register test
PASS: Servo register test
PASS: Interface register test
PASS: Pps register test
Warming up
Osc. oven is up
MJD 0 00:00:29
CBT ID: 3128A00642(H)
Status summary: Warming up
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 1524 V Signal Gain: 14.4 %
CBT Oven: 20.6 V CBT Oven Err: -9.55 C
Osc. Oven: -9.0 V Ion Pump: 0.4 uA
HW Ionizer: 1.0 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.2 V -12V supply: -12.2 V
+5V supply: 5.4 V Thermometer: 45.0 C
scpi > Cs oven is up
F(z) = 39948.9 Hz
Low Cs beam signal = 3
Raising emult voltage...
Low Cs signal (37) with max Emult
Fractional freq. offset is -0.000000e+00
Fatal Error (see Log)
scpi >
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
MJD 0 00:13:46
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: 2 entries
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -8.22 C
Osc. Oven: -9.1 V Ion Pump: 1.0 uA
HW Ionizer: 0.0 V Mass spec: 12.2 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.7 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.4 C
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
---Original---
From: "Tom Van Baak"tvb@LeapSecond.com
Date: 2016/11/4 00:42:46
To: "Discussion of precise time and frequency measurement"time-nuts@febo.com;
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Li,
The "Low cs signal with max Emult" is the classic error indicating it's out of gas. That's a bad sign. But the "9.2GHz PLL test 10.3v" is something else. So maybe there's hope? Or maybe you have two big problems instead of one. Rick might know.
For additional information, connect a PC to the serial port and capture the diagnostic information. Right after power up, press TOP -> CONFIG -> LOG -> SERVICE to set the unit into verbose diagnostic mode. You should see lines print every now and then as it undergoes self test and calibration.
You can also press TOP -> INFO -> PRINT to get a nicely formatted summary. Or TOP -> LOG -> PRINT to get the entire log history. That sometimes has lots of clues. The advantage of using the serial port is you get a permanent record of all this information. Viewing all this by the LCD screen can be tedious.
There's more information in 05071-90040, the 5071A Assembly-Level Service Manual, copies of which are on the web. Also 05071-90041, Operating and Programming Manual.
/tvb
----- Original Message -----
From: "Li Ang" 379998@qq.com
To: "time-nuts" time-nuts@febo.com
Sent: Thursday, November 03, 2016 8:10 AM
Subject: [time-nuts] 5071A with ATTENTION flashing
Hi
Today I met one HP 5071A with option 001 at one secondhand equipment company. This one can not enter CONTINUOUS OPERATION status, the ATTENTION led flashes.
There is a "Low cs signal with max Emult" error in the log. I have run the self-test, and it stopped at "9.2GHz PLL test 10.3v". I can only remember the the pump current was 0.8uA or less, C-filed was about 12mA.
The seller is asking for about 4000$, I am wondering if it's repairable. Since it is a "HP" branded 5071A with 001 option, I do not know if the Cs tube is dying or not, according to the two current values?
How do I know one 5071A/5061/5062 is dying or is still in good health by the readings?
Thanks
de BI7LNQ
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
that's telling you that the CBT oven is not up to temp so you could have a failed heater in the tube or the oven controller is malfunctioning
The former well you need a new tube which symmetricom will be happy to sell you for a 5 figure price tag.
The latter is limited by your repair skills and parts and data availability
Content by Scott
Typos by Siri
On Nov 9, 2016, at 7:42 AM, Li Ang 379998@qq.com wrote:
According to the Log, "CBT Oven Err: -9.55 C" might be something wrong. However, I can't find the correct range in the manual. Does anyone have the information about this parameter?
Regards
Li Ang
------------------ Original ------------------
From: "Li Ang";379998@qq.com;
Date: Wed, Nov 9, 2016 02:48 PM
To: "Tom Van Baak"tvb@leapsecond.com; "Discussion of precise time and frequency measurement"time-nuts@febo.com;
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Tom
I have collected the log from it. Log level is service. The 9.2G pll pass the test today. The log during the power-up process is also included.
Regards
Li Ang / BI7LNQ
scpi >
MJD 0 02:02:18
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -9.55 C
Osc. Oven: -9.1 V Ion Pump: 0.4 uA
HW Ionizer: -0.1 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.2 C
scpi >
scpi > ?
E-103> exit
E-113>
E-113> Log status: One entry
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> scpi >
scpi >
Performing hardware tests
PASS: CBT register test
PASS: DDFS register test
PASS: Servo register test
PASS: Interface register test
PASS: Pps register test
Warming up
Osc. oven is up
MJD 0 00:00:29
CBT ID: 3128A00642(H)
Status summary: Warming up
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 1524 V Signal Gain: 14.4 %
CBT Oven: 20.6 V CBT Oven Err: -9.55 C
Osc. Oven: -9.0 V Ion Pump: 0.4 uA
HW Ionizer: 1.0 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.2 V -12V supply: -12.2 V
+5V supply: 5.4 V Thermometer: 45.0 C
scpi > Cs oven is up
F(z) = 39948.9 Hz
Low Cs beam signal = 3
Raising emult voltage...
Low Cs signal (37) with max Emult
Fractional freq. offset is -0.000000e+00
Fatal Error (see Log)
scpi >
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
MJD 0 00:13:46
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: 2 entries
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -8.22 C
Osc. Oven: -9.1 V Ion Pump: 1.0 uA
HW Ionizer: 0.0 V Mass spec: 12.2 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.7 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.4 C
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
---Original---
From: "Tom Van Baak"tvb@LeapSecond.com
Date: 2016/11/4 00:42:46
To: "Discussion of precise time and frequency measurement"time-nuts@febo.com;
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Li,
The "Low cs signal with max Emult" is the classic error indicating it's out of gas. That's a bad sign. But the "9.2GHz PLL test 10.3v" is something else. So maybe there's hope? Or maybe you have two big problems instead of one. Rick might know.
For additional information, connect a PC to the serial port and capture the diagnostic information. Right after power up, press TOP -> CONFIG -> LOG -> SERVICE to set the unit into verbose diagnostic mode. You should see lines print every now and then as it undergoes self test and calibration.
You can also press TOP -> INFO -> PRINT to get a nicely formatted summary. Or TOP -> LOG -> PRINT to get the entire log history. That sometimes has lots of clues. The advantage of using the serial port is you get a permanent record of all this information. Viewing all this by the LCD screen can be tedious.
There's more information in 05071-90040, the 5071A Assembly-Level Service Manual, copies of which are on the web. Also 05071-90041, Operating and Programming Manual.
/tvb
----- Original Message -----
From: "Li Ang" 379998@qq.com
To: "time-nuts" time-nuts@febo.com
Sent: Thursday, November 03, 2016 8:10 AM
Subject: [time-nuts] 5071A with ATTENTION flashing
Hi
Today I met one HP 5071A with option 001 at one secondhand equipment company. This one can not enter CONTINUOUS OPERATION status, the ATTENTION led flashes.
There is a "Low cs signal with max Emult" error in the log. I have run the self-test, and it stopped at "9.2GHz PLL test 10.3v". I can only remember the the pump current was 0.8uA or less, C-filed was about 12mA.
The seller is asking for about 4000$, I am wondering if it's repairable. Since it is a "HP" branded 5071A with 001 option, I do not know if the Cs tube is dying or not, according to the two current values?
How do I know one 5071A/5061/5062 is dying or is still in good health by the readings?
Thanks
de BI7LNQ
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
I saw the low CBT temp also and 10 degrees C seem like allot. However in
the 5060/5061 Frankenstein I run the oven at +10 degrees (approx.) to what
the tube asks for. To drive C fumes out of the oven. A possible assumption
is the cooler oven is emitting fewer C's and the emult is trying to make up
for it.
Li
If it were mine and I checked the other suggestions. I would if convenient
actually attempt to raise the oven temp a bit to see what happens. I would
measure current and use an external supply to match it and then gently
increase the current. But from the thread you do not own it and I think a
large amount of money was at stake.
Regards
Paul
WB8TSL
On Wed, Nov 9, 2016 at 7:52 AM, Scott McGrath scmcgrath@gmail.com wrote:
that's telling you that the CBT oven is not up to temp so you could have
a failed heater in the tube or the oven controller is malfunctioning
The former well you need a new tube which symmetricom will be happy to
sell you for a 5 figure price tag.
The latter is limited by your repair skills and parts and data availability
Content by Scott
Typos by Siri
On Nov 9, 2016, at 7:42 AM, Li Ang 379998@qq.com wrote:
According to the Log, "CBT Oven Err: -9.55 C" might be something wrong.
However, I can't find the correct range in the manual. Does anyone have the
information about this parameter?
Regards
Li Ang
------------------ Original ------------------
From: "Li Ang";379998@qq.com;
Date: Wed, Nov 9, 2016 02:48 PM
To: "Tom Van Baak"tvb@leapsecond.com; "Discussion of precise time
and frequency measurement"time-nuts@febo.com;
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Tom
I have collected the log from it. Log level is service. The 9.2G pll
pass the test today. The log during the power-up process is also included.
Regards
Li Ang / BI7LNQ
scpi >
MJD 0 02:02:18
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -9.55 C
Osc. Oven: -9.1 V Ion Pump: 0.4 uA
HW Ionizer: -0.1 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.2 C
scpi >
scpi > ?
E-103> exit
E-113>
E-113> Log status: One entry
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> scpi >
scpi >
Performing hardware tests
PASS: CBT register test
PASS: DDFS register test
PASS: Servo register test
PASS: Interface register test
PASS: Pps register test
Warming up
Osc. oven is up
MJD 0 00:00:29
CBT ID: 3128A00642(H)
Status summary: Warming up
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 1524 V Signal Gain: 14.4 %
CBT Oven: 20.6 V CBT Oven Err: -9.55 C
Osc. Oven: -9.0 V Ion Pump: 0.4 uA
HW Ionizer: 1.0 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.2 V -12V supply: -12.2 V
+5V supply: 5.4 V Thermometer: 45.0 C
scpi > Cs oven is up
F(z) = 39948.9 Hz
Low Cs beam signal = 3
Raising emult voltage...
Low Cs signal (37) with max Emult
Fractional freq. offset is -0.000000e+00
Fatal Error (see Log)
scpi >
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
MJD 0 00:13:46
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: 2 entries
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -8.22 C
Osc. Oven: -9.1 V Ion Pump: 1.0 uA
HW Ionizer: 0.0 V Mass spec: 12.2 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.7 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.4 C
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
---Original---
From: "Tom Van Baak"tvb@LeapSecond.com
Date: 2016/11/4 00:42:46
To: "Discussion of precise time and frequency measurement"<
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Li,
The "Low cs signal with max Emult" is the classic error indicating it's
out of gas. That's a bad sign. But the "9.2GHz PLL test 10.3v" is something
else. So maybe there's hope? Or maybe you have two big problems instead of
one. Rick might know.
For additional information, connect a PC to the serial port and capture
the diagnostic information. Right after power up, press TOP -> CONFIG ->
LOG -> SERVICE to set the unit into verbose diagnostic mode. You should see
lines print every now and then as it undergoes self test and calibration.
You can also press TOP -> INFO -> PRINT to get a nicely formatted
summary. Or TOP -> LOG -> PRINT to get the entire log history. That
sometimes has lots of clues. The advantage of using the serial port is you
get a permanent record of all this information. Viewing all this by the LCD
screen can be tedious.
There's more information in 05071-90040, the 5071A Assembly-Level
Service Manual, copies of which are on the web. Also 05071-90041, Operating
and Programming Manual.
/tvb
----- Original Message -----
From: "Li Ang" 379998@qq.com
To: "time-nuts" time-nuts@febo.com
Sent: Thursday, November 03, 2016 8:10 AM
Subject: [time-nuts] 5071A with ATTENTION flashing
Hi
Today I met one HP 5071A with option 001 at one secondhand equipment
company. This one can not enter CONTINUOUS OPERATION status, the ATTENTION
led flashes.
There is a "Low cs signal with max Emult" error in the log. I have run
the self-test, and it stopped at "9.2GHz PLL test 10.3v". I can only
remember the the pump current was 0.8uA or less, C-filed was about 12mA.
The seller is asking for about 4000$, I am wondering if it's
repairable. Since it is a "HP" branded 5071A with 001 option, I do not
know if the Cs tube is dying or not, according to the two current values?
How do I know one 5071A/5061/5062 is dying or is still in good health
by the readings?
Thanks
de BI7LNQ
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
I'm still struggling to get the acrylic I need. I've been into London a few
times but not been able to get to the shop in business hours. Guess I could
order online if necessary but it will cost a fair bit more.
On Wed, Nov 9, 2016 at 3:19 PM, paul swed paulswedb@gmail.com wrote:
I saw the low CBT temp also and 10 degrees C seem like allot. However in
the 5060/5061 Frankenstein I run the oven at +10 degrees (approx.) to what
the tube asks for. To drive C fumes out of the oven. A possible assumption
is the cooler oven is emitting fewer C's and the emult is trying to make up
for it.
Li
If it were mine and I checked the other suggestions. I would if convenient
actually attempt to raise the oven temp a bit to see what happens. I would
measure current and use an external supply to match it and then gently
increase the current. But from the thread you do not own it and I think a
large amount of money was at stake.
Regards
Paul
WB8TSL
On Wed, Nov 9, 2016 at 7:52 AM, Scott McGrath scmcgrath@gmail.com wrote:
that's telling you that the CBT oven is not up to temp so you could have
a failed heater in the tube or the oven controller is malfunctioning
The former well you need a new tube which symmetricom will be happy to
sell you for a 5 figure price tag.
The latter is limited by your repair skills and parts and data
availability
Content by Scott
Typos by Siri
On Nov 9, 2016, at 7:42 AM, Li Ang 379998@qq.com wrote:
According to the Log, "CBT Oven Err: -9.55 C" might be something wrong.
However, I can't find the correct range in the manual. Does anyone have
the
information about this parameter?
Regards
Li Ang
------------------ Original ------------------
From: "Li Ang";379998@qq.com;
Date: Wed, Nov 9, 2016 02:48 PM
To: "Tom Van Baak"tvb@leapsecond.com; "Discussion of precise time
and frequency measurement"time-nuts@febo.com;
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Tom
I have collected the log from it. Log level is service. The 9.2G pll
pass the test today. The log during the power-up process is also
included.
Regards
Li Ang / BI7LNQ
scpi >
MJD 0 02:02:18
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -9.55 C
Osc. Oven: -9.1 V Ion Pump: 0.4 uA
HW Ionizer: -0.1 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.2 C
scpi >
scpi > ?
E-103> exit
E-113>
E-113> Log status: One entry
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> scpi >
scpi >
Performing hardware tests
PASS: CBT register test
PASS: DDFS register test
PASS: Servo register test
PASS: Interface register test
PASS: Pps register test
Warming up
Osc. oven is up
MJD 0 00:00:29
CBT ID: 3128A00642(H)
Status summary: Warming up
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 1524 V Signal Gain: 14.4 %
CBT Oven: 20.6 V CBT Oven Err: -9.55 C
Osc. Oven: -9.0 V Ion Pump: 0.4 uA
HW Ionizer: 1.0 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.2 V -12V supply: -12.2 V
+5V supply: 5.4 V Thermometer: 45.0 C
scpi > Cs oven is up
F(z) = 39948.9 Hz
Low Cs beam signal = 3
Raising emult voltage...
Low Cs signal (37) with max Emult
Fractional freq. offset is -0.000000e+00
Fatal Error (see Log)
scpi >
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
MJD 0 00:13:46
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: 2 entries
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -8.22 C
Osc. Oven: -9.1 V Ion Pump: 1.0 uA
HW Ionizer: 0.0 V Mass spec: 12.2 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.7 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.4 C
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
---Original---
From: "Tom Van Baak"tvb@LeapSecond.com
Date: 2016/11/4 00:42:46
To: "Discussion of precise time and frequency measurement"<
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Li,
The "Low cs signal with max Emult" is the classic error indicating it's
out of gas. That's a bad sign. But the "9.2GHz PLL test 10.3v" is
something
else. So maybe there's hope? Or maybe you have two big problems instead
of
one. Rick might know.
For additional information, connect a PC to the serial port and capture
the diagnostic information. Right after power up, press TOP -> CONFIG ->
LOG -> SERVICE to set the unit into verbose diagnostic mode. You should
see
lines print every now and then as it undergoes self test and calibration.
You can also press TOP -> INFO -> PRINT to get a nicely formatted
summary. Or TOP -> LOG -> PRINT to get the entire log history. That
sometimes has lots of clues. The advantage of using the serial port is
you
get a permanent record of all this information. Viewing all this by the
LCD
screen can be tedious.
There's more information in 05071-90040, the 5071A Assembly-Level
Service Manual, copies of which are on the web. Also 05071-90041,
Operating
and Programming Manual.
/tvb
----- Original Message -----
From: "Li Ang" 379998@qq.com
To: "time-nuts" time-nuts@febo.com
Sent: Thursday, November 03, 2016 8:10 AM
Subject: [time-nuts] 5071A with ATTENTION flashing
Hi
Today I met one HP 5071A with option 001 at one secondhand equipment
company. This one can not enter CONTINUOUS OPERATION status, the
ATTENTION
led flashes.
There is a "Low cs signal with max Emult" error in the log. I have run
the self-test, and it stopped at "9.2GHz PLL test 10.3v". I can only
remember the the pump current was 0.8uA or less, C-filed was about 12mA.
The seller is asking for about 4000$, I am wondering if it's
repairable. Since it is a "HP" branded 5071A with 001 option, I do not
know if the Cs tube is dying or not, according to the two current values?
How do I know one 5071A/5061/5062 is dying or is still in good health
by the readings?
Thanks
de BI7LNQ
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
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and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
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and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
Adrian
I think you may have responded to the wrong thread??
Regards
Paul
On Wed, Nov 9, 2016 at 10:21 AM, Adrian Godwin artgodwin@gmail.com wrote:
I'm still struggling to get the acrylic I need. I've been into London a few
times but not been able to get to the shop in business hours. Guess I could
order online if necessary but it will cost a fair bit more.
On Wed, Nov 9, 2016 at 3:19 PM, paul swed paulswedb@gmail.com wrote:
I saw the low CBT temp also and 10 degrees C seem like allot. However in
the 5060/5061 Frankenstein I run the oven at +10 degrees (approx.) to
what
the tube asks for. To drive C fumes out of the oven. A possible
assumption
is the cooler oven is emitting fewer C's and the emult is trying to make
up
for it.
Li
If it were mine and I checked the other suggestions. I would if
convenient
actually attempt to raise the oven temp a bit to see what happens. I
would
measure current and use an external supply to match it and then gently
increase the current. But from the thread you do not own it and I think a
large amount of money was at stake.
Regards
Paul
WB8TSL
On Wed, Nov 9, 2016 at 7:52 AM, Scott McGrath scmcgrath@gmail.com
wrote:
that's telling you that the CBT oven is not up to temp so you could
have
a failed heater in the tube or the oven controller is malfunctioning
The former well you need a new tube which symmetricom will be happy to
sell you for a 5 figure price tag.
The latter is limited by your repair skills and parts and data
availability
Content by Scott
Typos by Siri
On Nov 9, 2016, at 7:42 AM, Li Ang 379998@qq.com wrote:
According to the Log, "CBT Oven Err: -9.55 C" might be something
wrong.
However, I can't find the correct range in the manual. Does anyone have
the
information about this parameter?
Regards
Li Ang
------------------ Original ------------------
From: "Li Ang";379998@qq.com;
Date: Wed, Nov 9, 2016 02:48 PM
To: "Tom Van Baak"tvb@leapsecond.com; "Discussion of precise time
and frequency measurement"time-nuts@febo.com;
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Tom
I have collected the log from it. Log level is service. The 9.2G pll
pass the test today. The log during the power-up process is also
included.
Regards
Li Ang / BI7LNQ
scpi >
MJD 0 02:02:18
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -9.55 C
Osc. Oven: -9.1 V Ion Pump: 0.4 uA
HW Ionizer: -0.1 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.2 C
scpi >
scpi > ?
E-103> exit
E-113>
E-113> Log status: One entry
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> scpi >
scpi >
Performing hardware tests
PASS: CBT register test
PASS: DDFS register test
PASS: Servo register test
PASS: Interface register test
PASS: Pps register test
Warming up
Osc. oven is up
MJD 0 00:00:29
CBT ID: 3128A00642(H)
Status summary: Warming up
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 1524 V Signal Gain: 14.4 %
CBT Oven: 20.6 V CBT Oven Err: -9.55 C
Osc. Oven: -9.0 V Ion Pump: 0.4 uA
HW Ionizer: 1.0 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.2 V -12V supply: -12.2 V
+5V supply: 5.4 V Thermometer: 45.0 C
scpi > Cs oven is up
F(z) = 39948.9 Hz
Low Cs beam signal = 3
Raising emult voltage...
Low Cs signal (37) with max Emult
Fractional freq. offset is -0.000000e+00
Fatal Error (see Log)
scpi >
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
MJD 0 00:13:46
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: 2 entries
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -8.22 C
Osc. Oven: -9.1 V Ion Pump: 1.0 uA
HW Ionizer: 0.0 V Mass spec: 12.2 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.7 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.4 C
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
---Original---
From: "Tom Van Baak"tvb@LeapSecond.com
Date: 2016/11/4 00:42:46
To: "Discussion of precise time and frequency measurement"<
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Li,
The "Low cs signal with max Emult" is the classic error indicating
it's
out of gas. That's a bad sign. But the "9.2GHz PLL test 10.3v" is
something
else. So maybe there's hope? Or maybe you have two big problems instead
of
one. Rick might know.
For additional information, connect a PC to the serial port and
capture
the diagnostic information. Right after power up, press TOP -> CONFIG
->
LOG -> SERVICE to set the unit into verbose diagnostic mode. You should
see
lines print every now and then as it undergoes self test and
calibration.
You can also press TOP -> INFO -> PRINT to get a nicely formatted
summary. Or TOP -> LOG -> PRINT to get the entire log history. That
sometimes has lots of clues. The advantage of using the serial port is
you
get a permanent record of all this information. Viewing all this by the
LCD
screen can be tedious.
There's more information in 05071-90040, the 5071A Assembly-Level
Service Manual, copies of which are on the web. Also 05071-90041,
Operating
and Programming Manual.
/tvb
----- Original Message -----
From: "Li Ang" 379998@qq.com
To: "time-nuts" time-nuts@febo.com
Sent: Thursday, November 03, 2016 8:10 AM
Subject: [time-nuts] 5071A with ATTENTION flashing
Hi
Today I met one HP 5071A with option 001 at one secondhand equipment
company. This one can not enter CONTINUOUS OPERATION status, the
ATTENTION
led flashes.
There is a "Low cs signal with max Emult" error in the log. I have
run
the self-test, and it stopped at "9.2GHz PLL test 10.3v". I can only
remember the the pump current was 0.8uA or less, C-filed was about
12mA.
The seller is asking for about 4000$, I am wondering if it's
repairable. Since it is a "HP" branded 5071A with 001 option, I do not
know if the Cs tube is dying or not, according to the two current
values?
How do I know one 5071A/5061/5062 is dying or is still in good
health
by the readings?
Thanks
de BI7LNQ
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
Yes, I'm sorry about that.
On Wed, Nov 9, 2016 at 5:18 PM, paul swed paulswedb@gmail.com wrote:
Adrian
I think you may have responded to the wrong thread??
Regards
Paul
On Wed, Nov 9, 2016 at 10:21 AM, Adrian Godwin artgodwin@gmail.com
wrote:
I'm still struggling to get the acrylic I need. I've been into London a
few
times but not been able to get to the shop in business hours. Guess I
could
order online if necessary but it will cost a fair bit more.
On Wed, Nov 9, 2016 at 3:19 PM, paul swed paulswedb@gmail.com wrote:
I saw the low CBT temp also and 10 degrees C seem like allot. However
in
the 5060/5061 Frankenstein I run the oven at +10 degrees (approx.) to
what
the tube asks for. To drive C fumes out of the oven. A possible
assumption
is the cooler oven is emitting fewer C's and the emult is trying to
make
up
for it.
Li
If it were mine and I checked the other suggestions. I would if
convenient
actually attempt to raise the oven temp a bit to see what happens. I
would
measure current and use an external supply to match it and then gently
increase the current. But from the thread you do not own it and I
think a
large amount of money was at stake.
Regards
Paul
WB8TSL
On Wed, Nov 9, 2016 at 7:52 AM, Scott McGrath scmcgrath@gmail.com
wrote:
that's telling you that the CBT oven is not up to temp so you could
have
a failed heater in the tube or the oven controller is malfunctioning
The former well you need a new tube which symmetricom will be happy
to
sell you for a 5 figure price tag.
The latter is limited by your repair skills and parts and data
availability
Content by Scott
Typos by Siri
On Nov 9, 2016, at 7:42 AM, Li Ang 379998@qq.com wrote:
According to the Log, "CBT Oven Err: -9.55 C" might be something
wrong.
However, I can't find the correct range in the manual. Does anyone
have
the
information about this parameter?
Regards
Li Ang
------------------ Original ------------------
From: "Li Ang";379998@qq.com;
Date: Wed, Nov 9, 2016 02:48 PM
To: "Tom Van Baak"tvb@leapsecond.com; "Discussion of precise
time
and frequency measurement"time-nuts@febo.com;
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Tom
I have collected the log from it. Log level is service. The 9.2G
pll
pass the test today. The log during the power-up process is also
included.
Regards
Li Ang / BI7LNQ
scpi >
MJD 0 02:02:18
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -9.55 C
Osc. Oven: -9.1 V Ion Pump: 0.4 uA
HW Ionizer: -0.1 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.2 C
scpi >
scpi > ?
E-103> exit
E-113>
E-113> Log status: One entry
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max
Emult
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
PASS: CBT mass spec test
PASS: CPU RTDS test
PASS: CPU clock locked test
PASS: DDFS register test
PASS: 87MHz PLL test
PASS: 9.2 GHz PLL test
PASS: Servo register test
PASS: Servo convertor timeout test
PASS: Interface register test
PASS: Interface abus test
PASS: Pps register test
PASS: Pps interrupt test
PASS: power logic signals test
PASS: CBT register test
PASS: CBT window comp test
PASS: CBT therm test
PASS: CBT Cs oven test
PASS: CBT hw ion test
E-113>
E-113> scpi >
scpi >
Performing hardware tests
PASS: CBT register test
PASS: DDFS register test
PASS: Servo register test
PASS: Interface register test
PASS: Pps register test
Warming up
Osc. oven is up
MJD 0 00:00:29
CBT ID: 3128A00642(H)
Status summary: Warming up
Power source: AC
Log status: One entry
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 1524 V Signal Gain: 14.4 %
CBT Oven: 20.6 V CBT Oven Err: -9.55 C
Osc. Oven: -9.0 V Ion Pump: 0.4 uA
HW Ionizer: 1.0 V Mass spec: 12.3 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
+12V supply: 12.2 V -12V supply: -12.2 V
+5V supply: 5.4 V Thermometer: 45.0 C
scpi > Cs oven is up
F(z) = 39948.9 Hz
Low Cs beam signal = 3
Raising emult voltage...
Low Cs signal (37) with max Emult
Fractional freq. offset is -0.000000e+00
Fatal Error (see Log)
scpi >
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max
Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max
Emult
MJD 0 00:13:46
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Power source: AC
Log status: 2 entries
Freq Offset: 0e-15 Osc. control: -9.56 %
RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
E-multiplier: 2553 V Signal Gain: 14.4 %
CBT Oven: 0.0 V CBT Oven Err: -8.22 C
Osc. Oven: -9.1 V Ion Pump: 1.0 uA
HW Ionizer: 0.0 V Mass spec: 12.2 V
SAW Tuning: 0.0 V DRO Tuning: 7.3 V
87MHz PLL: 0.8 V uP Clock PLL: 1.7 V
+12V supply: 12.3 V -12V supply: -12.3 V
+5V supply: 5.4 V Thermometer: 46.4 C
scpi > Log status: 2 entries
Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max
Emult
Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max
Emult
---Original---
From: "Tom Van Baak"tvb@LeapSecond.com
Date: 2016/11/4 00:42:46
To: "Discussion of precise time and frequency measurement"<
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Li,
The "Low cs signal with max Emult" is the classic error indicating
it's
out of gas. That's a bad sign. But the "9.2GHz PLL test 10.3v" is
something
else. So maybe there's hope? Or maybe you have two big problems
instead
of
one. Rick might know.
For additional information, connect a PC to the serial port and
capture
the diagnostic information. Right after power up, press TOP -> CONFIG
->
LOG -> SERVICE to set the unit into verbose diagnostic mode. You
should
see
lines print every now and then as it undergoes self test and
calibration.
You can also press TOP -> INFO -> PRINT to get a nicely formatted
summary. Or TOP -> LOG -> PRINT to get the entire log history. That
sometimes has lots of clues. The advantage of using the serial port
is
you
get a permanent record of all this information. Viewing all this by
the
LCD
screen can be tedious.
There's more information in 05071-90040, the 5071A Assembly-Level
Service Manual, copies of which are on the web. Also 05071-90041,
Operating
and Programming Manual.
/tvb
----- Original Message -----
From: "Li Ang" 379998@qq.com
To: "time-nuts" time-nuts@febo.com
Sent: Thursday, November 03, 2016 8:10 AM
Subject: [time-nuts] 5071A with ATTENTION flashing
Hi
Today I met one HP 5071A with option 001 at one secondhand
equipment
company. This one can not enter CONTINUOUS OPERATION status, the
ATTENTION
led flashes.
There is a "Low cs signal with max Emult" error in the log. I have
run
the self-test, and it stopped at "9.2GHz PLL test 10.3v". I can only
remember the the pump current was 0.8uA or less, C-filed was about
12mA.
The seller is asking for about 4000$, I am wondering if it's
repairable. Since it is a "HP" branded 5071A with 001 option, I do
not
know if the Cs tube is dying or not, according to the two current
values?
How do I know one 5071A/5061/5062 is dying or is still in good
health
by the readings?
Thanks
de BI7LNQ
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Regarding error codes in the 5071A. This "feature"
was an afterthought. All of us hardware designers
brought out test points that were easy to implement
and then the microcontroller polled them and software
was written to give error reports. We did what was
easy on already finished board designs; not what
would be optimum if designing from the ground up.
If you can repair a 5071 based on the error code,
consider yourself lucky.
It is analogous to that old gag about the drunk
who is crawling around under the only street light
in the neighborhood. A bystander asks him what
he is doing and he says he is searching for his
wallet that he lost. The bystander asks him where
he lost it and he says "on the next block".
The bystander asks him why search here and he
says this is the only place with light.
Rick
Hi Li,
When there is a "fatal error" the unit goes back into standby mode, where the Cs oven is turned off. Hence the Cs oven temperature error will again be at its maximum value (which is that -9.55 number). This is by design.
I use a script to send a scpi syst:print? command once a minute, in additional to logging diagnostic information. That way you can see the unit slowly warm up and see how each of the readings stabilizes over time. What you may find is that the temp error starts at -9.55 and then slowly decreases to zero as the Cs oven warms up. If lock is not achieved the oven is turned off and the error slowly climbs back down to -9.55. This is by design.
Under ideal conditions a 5071A will lock within 10 to 15 minutes. But if the tube has been idle for months or years it can take half an hour or more. During this time the ion pump slowly improves the vacuum. So having a log file of periodic syst:print output allows you to follow the progress; of the ion pump, of the ovens, etc.
The fact that the log has only one entry suggests that someone cleared the entire log before you saw the instrument. That's unfortunate. It gives the impression the seller had something to hide.
Some comments on the diag information:
Cs oven is up
This suggests there's nothing wrong with the ion pump or the cesium oven. Your oven heater and controller are fine.
Low Cs beam signal = 3
This is consistent with a tube that's used up all its cesium.
Raising emult voltage...
Low Cs signal (37) with max Emult
This is consistent with a 5071 that's trying very hard to get enough beam signal, but there just isn't enough cesium left. If a high-performance tube, this is expected after 7 to 10 years of use.
Fatal Error (see Log)
Unlike older cesium standards, the 5071A is quite clever. When there's nothing else to do, it does a clean shutdown of ovens and reports a fatal error. The unit goes into standby. When I refuse to give up I try powering up the unit again and again several times a day.
If I suspect the tube is the problem I swap tubes from a working 5071 frame. This is a very simple way to decide if the problem is the frame or the tube. After a couple of days of trying, and if the diag messages and fatal errors are consistent, then I finally admit defeat and mark the tube bad. The good news is you then have an entire frame of spare parts! And also a Cs tube to put on the "Dremel" pile!
Finally, remember that even in standby mode, a 5071A makes a very attractive, high-quality 10 MHz quartz standard, with multiple output frequencies, with high-resolution digital frequency tuning, a LED clock and 1PPS input/output. You can turn it into a GPSDO by sending phase or frequency step SCPI commands. That is, there's no need for a DAC or EFC; we've talked before on the list about the advantages of a DDS-based GPSDO instead of the traditional DAC/EFC method.
/tvb
----- Original Message -----
From: Li Ang
To: Tom Van Baak ; Discussion of precise time and frequency measurement
Sent: Tuesday, November 08, 2016 10:48 PM
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Tom
I have collected the log from it. Log level is service. The 9.2G pll pass the test today. The log during the power-up process is also included.
Regards
Li Ang / BI7LNQ
scpi >
MJD 0 02:02:18
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
Hi
I have said goodbye to this one. There are 5 more 5071A with yellow led flashing to visit this weekend.
Regards
LiAng
BI7LNQ
---Original---
From: "Tom Van Baak"tvb@LeapSecond.com
Date: 2016/11/10 06:28:45
To: "Discussion of precise time and frequency measurement"time-nuts@febo.com;
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Li,
When there is a "fatal error" the unit goes back into standby mode, where the Cs oven is turned off. Hence the Cs oven temperature error will again be at its maximum value (which is that -9.55 number). This is by design.
I use a script to send a scpi syst:print? command once a minute, in additional to logging diagnostic information. That way you can see the unit slowly warm up and see how each of the readings stabilizes over time. What you may find is that the temp error starts at -9.55 and then slowly decreases to zero as the Cs oven warms up. If lock is not achieved the oven is turned off and the error slowly climbs back down to -9.55. This is by design.
Under ideal conditions a 5071A will lock within 10 to 15 minutes. But if the tube has been idle for months or years it can take half an hour or more. During this time the ion pump slowly improves the vacuum. So having a log file of periodic syst:print output allows you to follow the progress; of the ion pump, of the ovens, etc.
The fact that the log has only one entry suggests that someone cleared the entire log before you saw the instrument. That's unfortunate. It gives the impression the seller had something to hide.
Some comments on the diag information:
Cs oven is up
This suggests there's nothing wrong with the ion pump or the cesium oven. Your oven heater and controller are fine.
Low Cs beam signal = 3
This is consistent with a tube that's used up all its cesium.
Raising emult voltage...
Low Cs signal (37) with max Emult
This is consistent with a 5071 that's trying very hard to get enough beam signal, but there just isn't enough cesium left. If a high-performance tube, this is expected after 7 to 10 years of use.
Fatal Error (see Log)
Unlike older cesium standards, the 5071A is quite clever. When there's nothing else to do, it does a clean shutdown of ovens and reports a fatal error. The unit goes into standby. When I refuse to give up I try powering up the unit again and again several times a day.
If I suspect the tube is the problem I swap tubes from a working 5071 frame. This is a very simple way to decide if the problem is the frame or the tube. After a couple of days of trying, and if the diag messages and fatal errors are consistent, then I finally admit defeat and mark the tube bad. The good news is you then have an entire frame of spare parts! And also a Cs tube to put on the "Dremel" pile!
Finally, remember that even in standby mode, a 5071A makes a very attractive, high-quality 10 MHz quartz standard, with multiple output frequencies, with high-resolution digital frequency tuning, a LED clock and 1PPS input/output. You can turn it into a GPSDO by sending phase or frequency step SCPI commands. That is, there's no need for a DAC or EFC; we've talked before on the list about the advantages of a DDS-based GPSDO instead of the traditional DAC/EFC method.
/tvb
----- Original Message -----
From: Li Ang
To: Tom Van Baak ; Discussion of precise time and frequency measurement
Sent: Tuesday, November 08, 2016 10:48 PM
Subject: Re: [time-nuts] 5071A with ATTENTION flashing
Hi Tom
I have collected the log from it. Log level is service. The 9.2G pll pass the test today. The log during the power-up process is also included.
Regards
Li Ang / BI7LNQ
scpi >
MJD 0 02:02:18
CBT ID: 3128A00642(H)
Status summary: Fatal Error (see Log)
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