Empathy List Archives

KS

karl strauss

Thu, Dec 8, 2005 6:39 PM

For lab experiment I need to simulate JJY's transmission at either the
40kHz or 60kHz channel
I have a test set which outputs IRIG-B. Is anyone aware of a translator
device OR Windows software that will take the IRIG signal and output a
simulation of JJY?

Thanks in Advance

Karl Strauss

For lab experiment I need to simulate JJY's transmission at either the 40kHz or 60kHz channel I have a test set which outputs IRIG-B. Is anyone aware of a translator device OR Windows software that will take the IRIG signal and output a simulation of JJY? Thanks in Advance Karl Strauss

TV

Tom Van Baak

Thu, Dec 8, 2005 6:46 PM

I did this for WWVB a while ago. I used a PC
program to generate the timecode and a signal
generator to generate the carrier. You can then
gate the carrier using a parallel port pin or a
serial port modem pin. See:

http://www.leapsecond.com/notes/wwvb2.htm

The source code is there; I have a DCF version
as well.

/tvb

----- Original Message -----
From: "karl strauss" karl.f.strauss@jpl.nasa.gov
To: time-nuts@febo.com
Sent: Thursday, December 08, 2005 10:39
Subject: [time-nuts] JJY Simulator

For lab experiment I need to simulate JJY's transmission at either the
40kHz or 60kHz channel
I have a test set which outputs IRIG-B. Is anyone aware of a translator
device OR Windows software that will take the IRIG signal and output a
simulation of JJY?

Thanks in Advance

Karl Strauss

time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

I did this for WWVB a while ago. I used a PC program to generate the timecode and a signal generator to generate the carrier. You can then gate the carrier using a parallel port pin or a serial port modem pin. See: http://www.leapsecond.com/notes/wwvb2.htm The source code is there; I have a DCF version as well. /tvb ----- Original Message ----- From: "karl strauss" <karl.f.strauss@jpl.nasa.gov> To: <time-nuts@febo.com> Sent: Thursday, December 08, 2005 10:39 Subject: [time-nuts] JJY Simulator > For lab experiment I need to simulate JJY's transmission at either the > 40kHz or 60kHz channel > I have a test set which outputs IRIG-B. Is anyone aware of a translator > device OR Windows software that will take the IRIG signal and output a > simulation of JJY? > > Thanks in Advance > > Karl Strauss > > > > _______________________________________________ > time-nuts mailing list > time-nuts@febo.com > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

BG

Bjorn Gabrielsson

Thu, Dec 8, 2005 7:13 PM

karl strauss karl.f.strauss@jpl.nasa.gov writes:

For lab experiment I need to simulate JJY's transmission at either the
40kHz or 60kHz channel
I have a test set which outputs IRIG-B. Is anyone aware of a
translator device OR Windows software that will take the IRIG signal
and output a simulation of JJY?

Thanks in Advance

Karl Strauss

The "Time Signal Generator ZZG5" from HKW in Germany might be
usable. To sync it to the IRIG-B you might need to simulate the GPS
receiver the ZZG5 can be slaved to.

http://www.hkw-elektronik.de/hkw_elektronik/produkte/Mess-u_Testgerate___Measuremt_/mess-u_testgerate___measuremt_.html

--

Björn

karl strauss <karl.f.strauss@jpl.nasa.gov> writes: > For lab experiment I need to simulate JJY's transmission at either the > 40kHz or 60kHz channel > I have a test set which outputs IRIG-B. Is anyone aware of a > translator device OR Windows software that will take the IRIG signal > and output a simulation of JJY? > > Thanks in Advance > > Karl Strauss The "Time Signal Generator ZZG5" from HKW in Germany might be usable. To sync it to the IRIG-B you might need to simulate the GPS receiver the ZZG5 can be slaved to. http://www.hkw-elektronik.de/hkw_elektronik/produkte/Mess-u_Testgerate___Measuremt_/mess-u_testgerate___measuremt_.html -- Björn

BH

Bill Hawkins

Fri, Dec 9, 2005 4:56 AM

While we're on the subject of simulators, does anyone know
of a simulation for GOES that could go into the receiver
board at some point to display time from the simulator's clock?

Sure seems like a shame to trash brand new TrueTime receivers.

Bill Hawkins

While we're on the subject of simulators, does anyone know of a simulation for GOES that could go into the receiver board at some point to display time from the simulator's clock? Sure seems like a shame to trash brand new TrueTime receivers. Bill Hawkins

TV

Tom Van Baak

Fri, Dec 9, 2005 5:45 AM

Bill,

There is a Truetime G2G (GPS to GOES) which is a GPS
antenna plus digital and RF circuitry that re-generates
enough of a GOES signal that a 468-DC thinks it has
locked on to the East satellite carrier and extracts the
time code bits.

But, I agree about trashing the receivers. One of these
days someone will post an easy PIC or Atmel-based
hack that allows them to be general purpose clock
displays. It can't be that hard. But no one has done it
yet that I know of.

/tvb

While we're on the subject of simulators, does anyone know
of a simulation for GOES that could go into the receiver
board at some point to display time from the simulator's clock?

Sure seems like a shame to trash brand new TrueTime receivers.

Bill Hawkins

Bill, There is a Truetime G2G (GPS to GOES) which is a GPS antenna plus digital and RF circuitry that re-generates enough of a GOES signal that a 468-DC thinks it has locked on to the East satellite carrier and extracts the time code bits. But, I agree about trashing the receivers. One of these days someone will post an easy PIC or Atmel-based hack that allows them to be general purpose clock displays. It can't be that hard. But no one has done it yet that I know of. /tvb > While we're on the subject of simulators, does anyone know > of a simulation for GOES that could go into the receiver > board at some point to display time from the simulator's clock? > > Sure seems like a shame to trash brand new TrueTime receivers. > > Bill Hawkins

BC

Brooke Clarke

Fri, Dec 9, 2005 11:29 PM

Hi:

When my FTS4060 s/n 1013 was delivered it was shipped outside the carton with metal banding holding it on top of the other units in their boxes.

January of this year I got the Operation LED to turn on, but the frequency was drifting about where you would expect a good crystal source to be. So I took this unit completely apart as part of an effort to make a manual.

A few days ago I put it back together and low and behold it locked up and has been locked for a couple of days now. Today I soldered jumpers across the power switch in the SR620 which had gone bad and started comparing the FTS4060 1 MHz zero crossings with the M12T+ 1 PPS and after about an hour the rate seems to be close to a straight line at 6 ps/second. This with the C Field set at 500.

Maybe it's now working?

Have Fun,

Brooke Clarke, N6GCE

--
w/Java http://www.PRC68.com
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
http://www.precisionclock.com

Hi: When my FTS4060 s/n 1013 was delivered it was shipped outside the carton with metal banding holding it on top of the other units in their boxes. January of this year I got the Operation LED to turn on, but the frequency was drifting about where you would expect a good crystal source to be. So I took this unit completely apart as part of an effort to make a manual. A few days ago I put it back together and low and behold it locked up and has been locked for a couple of days now. Today I soldered jumpers across the power switch in the SR620 which had gone bad and started comparing the FTS4060 1 MHz zero crossings with the M12T+ 1 PPS and after about an hour the rate seems to be close to a straight line at 6 ps/second. This with the C Field set at 500. Maybe it's now working? Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com

RE

Robert E. Martinson

Sat, Dec 10, 2005 1:10 AM

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Brooke Clarke
Sent: Friday, December 09, 2005 18:29
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] FTS4060 was Dead, Now Working?

Hi:

When my FTS4060 s/n 1013 was delivered it was shipped outside the carton
with metal banding holding it on top of the other units in their boxes.

January of this year I got the Operation LED to turn on, but the frequency
was drifting about where you would expect a good crystal source to be. So I
took this unit completely apart as part of an effort to make a manual.

A few days ago I put it back together and low and behold it locked up and
has been locked for a couple of days now. Today I soldered jumpers across
the power switch in the SR620 which had gone bad and started comparing the
FTS4060 1 MHz zero crossings with the M12T+ 1 PPS and after about an hour
the rate seems to be close to a straight line at 6 ps/second. This with the
C Field set at 500.

Maybe it's now working?

Have Fun,

Brooke Clarke, N6GCE

--
w/Java http://www.PRC68.com
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
http://www.precisionclock.com

time-nuts mailing list
time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

-----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Brooke Clarke Sent: Friday, December 09, 2005 18:29 To: Discussion of precise time and frequency measurement Subject: [time-nuts] FTS4060 was Dead, Now Working? Hi: When my FTS4060 s/n 1013 was delivered it was shipped outside the carton with metal banding holding it on top of the other units in their boxes. January of this year I got the Operation LED to turn on, but the frequency was drifting about where you would expect a good crystal source to be. So I took this unit completely apart as part of an effort to make a manual. A few days ago I put it back together and low and behold it locked up and has been locked for a couple of days now. Today I soldered jumpers across the power switch in the SR620 which had gone bad and started comparing the FTS4060 1 MHz zero crossings with the M12T+ 1 PPS and after about an hour the rate seems to be close to a straight line at 6 ps/second. This with the C Field set at 500. Maybe it's now working? Have Fun, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

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JJY Simulator