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View all threadsTX from N310 External LO Error
Hello all - I am trying to transmit a test waveform from an N310 using the sample program tx_waveforms. When I set "tx_lo_source=external" I get the error below. When I set it to internal, the program runs smoothly, but there is no output. I am supplying an external LO at twice the desired output frequency. I am using uhd 4.3.0.0.
./tx_waveforms --args "addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external" --freq 1e9 --gain 10 --bw 1e6 --rate 9.6e6 --subdev "A:1" --channels "0" --wave-freq 100e3
Creating the usrp device with: addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external...
[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501; UHD_4.3.0.HEAD-0-g1f8fd345
[INFO] [MPMD] Initializing 1 device(s) in parallel with args: mgmt_addr=192.168.10.2,type=n3xx,product=n310,serial=3218B5F,name=ni-n3xx-3218B5F,fpga=HG,claimed=False,addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external
[INFO] [MPM.PeriphManager] init() called with device args `fpga=HG,master_clock_rate=153.6e6,mgmt_addr=192.168.10.2,name=ni-n3xx-3218B5F,product=n310,tx_lo_source=external,clock_source=internal,time_source=internal'.
[ERROR] [RPC] RuntimeError: MYKONOS_waitInitCals() returned an ARM error
[ERROR] [MPM.RPCServer] init() failed with error: RuntimeError: MYKONOS_waitInitCals() returned an ARM error
Error: RuntimeError: Error during RPC call to `init'. Error message: RuntimeError: MYKONOS_waitInitCals() returned an ARM error
Thanks,
Jonathan
Hi Jonathan,
At startup, the init_cal will always be conducted at 2.5GHz requiring an
external LO at 5 GHz. After the init cal, then you can re-tune your
external LO to twice the desired operating frequency. It wasn't clear to
me from your comment if your external LO is initially configured to 5 GHz
or to 2 GHz. If the latter, try with 5 GHz and if startup occurs
correctly, retune it to 2 GHz after that point.
Rob
On Wed, Nov 30, 2022 at 1:43 PM Jonathan Tobin Tobin@augustusaero.com
wrote:
Hello all - I am trying to transmit a test waveform from an N310 using the
sample program tx_waveforms. When I set "tx_lo_source=external" I get the
error below. When I set it to internal, the program runs smoothly, but
there is no output. I am supplying an external LO at twice the desired
output frequency. I am using uhd 4.3.0.0.
./tx_waveforms --args
"addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external" --freq
1e9 --gain 10 --bw 1e6 --rate 9.6e6 --subdev "A:1" --channels "0"
--wave-freq 100e3
Creating the usrp device with:
addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external...
[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501;
UHD_4.3.0.HEAD-0-g1f8fd345
[INFO] [MPMD] Initializing 1 device(s) in parallel with args:
mgmt_addr=192.168.10.2,type=n3xx,product=n310,serial=3218B5F,name=ni-n3xx-3218B5F,fpga=HG,claimed=False,addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external
[INFO] [MPM.PeriphManager] init() called with device args
`fpga=HG,master_clock_rate=153.6e6,mgmt_addr=192.168.10.2,name=ni-n3xx-3218B5F,product=n310,tx_lo_source=external,clock_source=internal,time_source=internal'.
[ERROR] [RPC] RuntimeError: MYKONOS_waitInitCals() returned an ARM error
[ERROR] [MPM.RPCServer] init() failed with error: RuntimeError:
MYKONOS_waitInitCals() returned an ARM error
Error: RuntimeError: Error during RPC call to `init'. Error message:
RuntimeError: MYKONOS_waitInitCals() returned an ARM error
Thanks,
Jonathan
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On 30/11/2022 17:46, Rob Kossler wrote:
Hi Jonathan,
At startup, the init_cal will always be conducted at 2.5GHz
requiring an external LO at 5 GHz. After the init cal, then you can
re-tune your external LO to twice the desired operating frequency. It
wasn't clear to me from your comment if your external LO is initially
configured to 5 GHz or to 2 GHz. If the latter, try with 5 GHz and if
startup occurs correctly, retune it to 2 GHz after that point.
Rob
It has also been suggested to use "init_cals=BASIC" in the device
argument in this situation. It's not clear to me exactly what
that does.
On Wed, Nov 30, 2022 at 1:43 PM Jonathan Tobin
Tobin@augustusaero.com wrote:
Hello all - I am trying to transmit a test waveform from an N310
using the sample program tx_waveforms. When I set
"tx_lo_source=external" I get the error below. When I set it to
internal, the program runs smoothly, but there is no output. I am
supplying an external LO at twice the desired output frequency. I
am using uhd 4.3.0.0.
./tx_waveforms --args
"addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external"
--freq 1e9 --gain 10 --bw 1e6 --rate 9.6e6 --subdev "A:1"
--channels "0" --wave-freq 100e3
Creating the usrp device with:
addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external...
[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501;
UHD_4.3.0.HEAD-0-g1f8fd345
[INFO] [MPMD] Initializing 1 device(s) in parallel with args:
mgmt_addr=192.168.10.2,type=n3xx,product=n310,serial=3218B5F,name=ni-n3xx-3218B5F,fpga=HG,claimed=False,addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external
[INFO] [MPM.PeriphManager] init() called with device args
`fpga=HG,master_clock_rate=153.6e6,mgmt_addr=192.168.10.2,name=ni-n3xx-3218B5F,product=n310,tx_lo_source=external,clock_source=internal,time_source=internal'.
[ERROR] [RPC] RuntimeError: MYKONOS_waitInitCals() returned an ARM
error
[ERROR] [MPM.RPCServer] init() failed with error: RuntimeError:
MYKONOS_waitInitCals() returned an ARM error
Error: RuntimeError: Error during RPC call to `init'. Error
message: RuntimeError: MYKONOS_waitInitCals() returned an ARM error
Thanks,
Jonathan
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Hi Jonathan,
What Rob said is correct. You need to supply a 5 GHz LO initially so that
the startup calibrations for the N310 will be correct. However, if I
recall correctly, the device should still initialize even with an LO not
equal to 5 GHz (though your going to see imaging / possible LO leakage in
the frequency domain if this is the case).
Is your LO power within spec of the device? The ad9371 requires an
external LO between +0 dBm and +6 dBm with higher frequencies requiring
higher power. Providing an LO below that power spec will give you the
MYKONOS_waitInitCals() error.
If you are within that spec, then you can modify your init_cals and
incrementally test adding calibrations until you figure out which
calibration is throwing the error. So your args would look like this
initially ( --args
"addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external,init_cals=BASIC")
and then you can add more init_cals by doing
init_cals=BASIC|TX_ATTENUATION_DELAY|PATH_DELAY etc. The | is the append
operation. The calibrations are listed in the link below.
https://files.ettus.com/manual/page_usrp_n3xx.html#n3xx_mg_calibrations
Hope this helps
Scott
On Wed, Nov 30, 2022 at 4:48 PM Rob Kossler rkossler@nd.edu wrote:
Hi Jonathan,
At startup, the init_cal will always be conducted at 2.5GHz requiring an
external LO at 5 GHz. After the init cal, then you can re-tune your
external LO to twice the desired operating frequency. It wasn't clear to
me from your comment if your external LO is initially configured to 5 GHz
or to 2 GHz. If the latter, try with 5 GHz and if startup occurs
correctly, retune it to 2 GHz after that point.
Rob
On Wed, Nov 30, 2022 at 1:43 PM Jonathan Tobin Tobin@augustusaero.com
wrote:
Hello all - I am trying to transmit a test waveform from an N310 using
the sample program tx_waveforms. When I set "tx_lo_source=external" I get
the error below. When I set it to internal, the program runs smoothly, but
there is no output. I am supplying an external LO at twice the desired
output frequency. I am using uhd 4.3.0.0.
./tx_waveforms --args
"addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external" --freq
1e9 --gain 10 --bw 1e6 --rate 9.6e6 --subdev "A:1" --channels "0"
--wave-freq 100e3
Creating the usrp device with:
addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external...
[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501;
UHD_4.3.0.HEAD-0-g1f8fd345
[INFO] [MPMD] Initializing 1 device(s) in parallel with args:
mgmt_addr=192.168.10.2,type=n3xx,product=n310,serial=3218B5F,name=ni-n3xx-3218B5F,fpga=HG,claimed=False,addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external
[INFO] [MPM.PeriphManager] init() called with device args
`fpga=HG,master_clock_rate=153.6e6,mgmt_addr=192.168.10.2,name=ni-n3xx-3218B5F,product=n310,tx_lo_source=external,clock_source=internal,time_source=internal'.
[ERROR] [RPC] RuntimeError: MYKONOS_waitInitCals() returned an ARM error
[ERROR] [MPM.RPCServer] init() failed with error: RuntimeError:
MYKONOS_waitInitCals() returned an ARM error
Error: RuntimeError: Error during RPC call to `init'. Error message:
RuntimeError: MYKONOS_waitInitCals() returned an ARM error
Thanks,
Jonathan
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Thanks for the responses everyone. Adding the "init_cals=BASIC" argument got rid of the error (I suppose a band-aid until I can grab a higher frequency sig gen). I was only supplying a 2 GHz signal, but it was at +3 dBm. I'll have to experiment the power.
Thanks for the help.
Thanks,
Jonathan
From: Kenneth Burchfield ksburchfield@gmail.com
Sent: Wednesday, November 30, 2022 4:20 PM
To: Rob Kossler rkossler@nd.edu
Cc: Jonathan Tobin Tobin@augustusaero.com; usrp-users usrp-users@lists.ettus.com
Subject: Re: [USRP-users] Re: TX from N310 External LO Error
Hi Jonathan,
What Rob said is correct. You need to supply a 5 GHz LO initially so that the startup calibrations for the N310 will be correct. However, if I recall correctly, the device should still initialize even with an LO not equal to 5 GHz (though your going to see imaging / possible LO leakage in the frequency domain if this is the case).
Is your LO power within spec of the device? The ad9371 requires an external LO between +0 dBm and +6 dBm with higher frequencies requiring higher power. Providing an LO below that power spec will give you the MYKONOS_waitInitCals() error.
If you are within that spec, then you can modify your init_cals and incrementally test adding calibrations until you figure out which calibration is throwing the error. So your args would look like this initially ( --args "addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external,init_cals=BASIC") and then you can add more init_cals by doing init_cals=BASIC|TX_ATTENUATION_DELAY|PATH_DELAY etc. The | is the append operation. The calibrations are listed in the link below.
https://files.ettus.com/manual/page_usrp_n3xx.html#n3xx_mg_calibrations
Hope this helps
Scott
On Wed, Nov 30, 2022 at 4:48 PM Rob Kossler <rkossler@nd.edumailto:rkossler@nd.edu> wrote:
Hi Jonathan,
At startup, the init_cal will always be conducted at 2.5GHz requiring an external LO at 5 GHz. After the init cal, then you can re-tune your external LO to twice the desired operating frequency. It wasn't clear to me from your comment if your external LO is initially configured to 5 GHz or to 2 GHz. If the latter, try with 5 GHz and if startup occurs correctly, retune it to 2 GHz after that point.
Rob
On Wed, Nov 30, 2022 at 1:43 PM Jonathan Tobin <Tobin@augustusaero.commailto:Tobin@augustusaero.com> wrote:
Hello all - I am trying to transmit a test waveform from an N310 using the sample program tx_waveforms. When I set "tx_lo_source=external" I get the error below. When I set it to internal, the program runs smoothly, but there is no output. I am supplying an external LO at twice the desired output frequency. I am using uhd 4.3.0.0.
./tx_waveforms --args "addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external" --freq 1e9 --gain 10 --bw 1e6 --rate 9.6e6 --subdev "A:1" --channels "0" --wave-freq 100e3
Creating the usrp device with: addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external...
[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501; UHD_4.3.0.HEAD-0-g1f8fd345
[INFO] [MPMD] Initializing 1 device(s) in parallel with args: mgmt_addr=192.168.10.2,type=n3xx,product=n310,serial=3218B5F,name=ni-n3xx-3218B5F,fpga=HG,claimed=False,addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external
[INFO] [MPM.PeriphManager] init() called with device args `fpga=HG,master_clock_rate=153.6e6,mgmt_addr=192.168.10.2,name=ni-n3xx-3218B5F,product=n310,tx_lo_source=external,clock_source=internal,time_source=internal'.
[ERROR] [RPC] RuntimeError: MYKONOS_waitInitCals() returned an ARM error
[ERROR] [MPM.RPCServer] init() failed with error: RuntimeError: MYKONOS_waitInitCals() returned an ARM error
Error: RuntimeError: Error during RPC call to `init'. Error message: RuntimeError: MYKONOS_waitInitCals() returned an ARM error
Thanks,
Jonathan
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