I've had a Z3801A for about a year. It's always had an issue where the
number of satellites tracked will drop to zero for one or two readings
and then jump right back where it was ( often at 5 or 6 satellites ).
This often (but not always) affects the EFC and/or PPS and/or HUP. My
Tbolt is running on the same antenna via an HP58536A splitter with no
problems. I've changed cables and splitter ports with no improvement.
I've also checked the power supply voltages and the frequencies of the
two crystals on the Z3801A board. All are fine.
I assumed that the VP was flaky so I recently pulled it out for testing
and found no problems. I then tapped into the link between the VP and
the Z3801A and found that the number of tracked satellites reported by
the Z3801A is often less than the number reported by the VP.
Specifically, I've seen the VP report 6 satellites tracked at the exact
same second that the Z3801A is claiming that there are no (zero)
satellites tracked.
Does anyone know if there are any hidden parameters that the Z3801A is
using to decide if a satellite is acceptable? I looked through the
manual but I couldn't find anything. Is there a command I'm missing?
Thanks,
Ed
_______________________________________________
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.
