Ah, ok, that helps. Meanwhile, I've found the manual and the schematics,
and it seems to be possible, to get a died power supply back running.
Thanks a lot!
Volker
Am 03.11.2012 21:36, schrieb Bob Camp:
Hi
In the case of the 53132, the power supply seems to be the weak link. Out of
maybe a hundred or so in the fleet, we see maybe one or two die each month. On
the SR620 the power supply also seems to go from time to time. Both have the
normal keyboard and display issues, but those can be fixed. If you go back to
things like the 5335, the weak point is the input amp, it blows if you get +5
on it. Like power transformers - not a replaceable item...
Bob
On Nov 3, 2012, at 4:10 PM, Volker Esper<ail...@t-online.de> wrote:
Hi Bob
What is it, that limits a counters life, are you speaking of typical counter
specific failures or do you just mean the common wearout?
Sorry, I know those are no smart questions - but my heart is thumping when I
think of the price and the long way it has to go over the sea...
Thanks
Volker
Am 03.11.2012 17:59, schrieb Bob Camp:
Hi
Both counters have their weak points long term. On the balance I think the 620
should last longer. The 620 is the higher resolution of the two. The 620
normally comes with a bit better reference. Both are supported by various Time
Nut software packages. Both do GPIB and serial i/o. The 620 is a bit more
controllable over serial. The 53132 takes up less space on your bench.
For the same price - go for the 620. For the usual 53132 is $1300 and the 620
is $2400, not so clear.
Bob
On Nov 3, 2012, at 10:10 AM, Volker Esper<ail...@t-online.de> wrote:
Thank you for the interesting information. Now, the time has come to look for
an adequate counter - anyone who has experience with the HP 53132A and the
SR620? If they both where at - say 1000 USD - what would you prefer for the job
of phase measurement? I've read about that massive single shot capability of
the SR, but - as being a newbie - is there anything I overlook at this moment?
Thanks
Volker - DF9PL
Am 02.11.2012 16:32, schrieb Volker Esper:
Dear fellows,
I'm searching for a counter that allows me to make automated measure series. Of
course, Allan Deviation is an important thing to determine when experimenting
with or developing GPSDOs (what I intend). So it seemed to be a nice thing to
measure phase deviation with a counter (HP 53132A or SR-620 or so).
When experimenting with that stuff I discovered, that all my equipment would
not be adequate to determine Allan Deviations beyond 10e-11 (or so). The
question is, can any counter deliver that precision / low noise to make such
measurements possible? Or does it have to be a more sophisticated technique,
such as cross spectrum analysis?
Thanks a lot in advance
Volker
(I guess you recognize, that I am just a newbie to that all)
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