On 30/12/12 02:08, Chris Howard wrote:
Today I arrived home from a trip to Cleveland
to pick up my FTS-4060 Cesium standard.
About 45 minutes after power-up the lock
light came on.
This is unit S/N 1253. I think the only
option it has is the 1 MHz/100 kHz output.
I connected both my GPSDO and this thing to
my O-scope and can see that the GPSDO is
slightly faster. With the scope triggering
on the 4060, it takes right at 8 minutes
for the GPSDO to advance by one full cycle.
Reading on list archives, it seems to me that
the 4060 needs to be tweaked to match the GPSDO.
I have printed out the manual for the 4060 and
I will read about that and see what I can figure out.
I also think I will measure the one-cycle-advance
time period over the course of the next few days
and see if it changes much.
I would recommend to use a TIC and TimeLab to assist you on that task.
It is recommended to look at the phase plot (P), frequency plot (F) and
modified Allan deviation plot (M) every once in a while.
A benefit is naturally that you can share the measurements in a suitable
form for others to toy with and provide comments to you.
Cheers,
Magnus
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