> This appears to be pre Y2K.
Is it Y2K, or the 1024 week GPS rollover?
At least with the Z3801A, you can get around the 1024 week problem by telling
it a date before it gets it from the GPS.
--
These are my opinions. I hate spam.
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time-nuts m
I have a HP 55300A GPSDO that works well except for having the wrong
date. It does not decode the date from the GPS correctly. It has
firmware 3704-D. This appears to be pre Y2K. Does anybody have newer
firmware for one of these. ?
Gary
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time-nuts
On 21 January 2017 at 17:29, Gary Neilson wrote:
> I have a HP 55300A Telecom Primary Reference Standard that I am using as a
> frequency reference (10 mhz) in my lab.
>
I suppose this is one of those open-ended questions, but what the
definition of a "Primary Reference"? It seems a rather pres
I have a HP 55300A Telecom Primary Reference Standard that I am using as
a frequency reference (10 mhz) in my lab.
The unit work well and outputs 10mhz, 1pps, IRIG-B, as well as other
telecom frequencies all work ok.
The unit has a problem with the Date received from the GPS. After it
starts
When I was testing the E1938A I used to run the environmental
test chamber up to 85 degrees C, let the unit stabilize for
a while, and then dump liquid nitrogen into the chamber
to go to -55 degrees C in something like 2 minutes. The
temperature inside the crystal oven fluctuated maybe a millideg
Hi
At normal room temperatures, you simply can not run enough air past the OCXO
to “cool it to much”. The OCXO heater will simply put out a bit more power as
you
increase the air flow. That’s not to say that the performance will improve any
as the
OCXO is quickly following any twitch or bump in
I recently got a HP55300A on ebay for parts. It works fine but runs on 48V.
I am going to install a AC supply inside and also place a fan on the
top for cooling.
I hope the air flow will not cool the OCXO too much.
I am also looking for documentation. I have the User manual but am
looking f
