A 4.35 milli-Hertz(mHz)deviation is not bad at all. If you meant 4.35
Mega-Hertz (MHz). There are a few orders of magnitude between these
(10^-3 to 10^6).
The proper use of units is important. In some cases this improper use
of units can be understood due to the wrong units cannot apply. In
this case the possible wrong units could apply, so, you need to use
the correct units so that there is no misunderstanding.
Did you mean mHz or MHz??
73
Glenn
WB4UIV
At 03:21 AM 10/10/2009, you wrote:
Bruce Griffiths wrote:
swingbyte wrote:
HI all ,
I had a 5370 A shipped to me that suffered enough of a drop/roll to
break a handle and bend the chassis such that the bottom panel had to
be modified to get it back on. When I connected the timebase output
to the start input the frequency display is 10.0000000xx with the last
two numbers moving about quite a lot. Could this indicate damage to
the oscillator due to the drop? I haven't tuned up the inputs yet so
this may be an artefact of that.
Thanks
Tim
Tim
What gate time was used to measure the frequency?
Bruce
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Hi Bruce,
With a 1s gate time it ranges from 9.999 999 996 to 10.000 000 012 MHz
The 5335 with a 1s gate time gives 10.00000101 with the last digit
flickering 0. Of course what's really bad is I have two clocks to
check now. The std deviation as measured by the 5370 of the 5370
clock is ~1.8 kHz while the std dev of the 5335 clock is 7.8 kHz -
both have 10811 OCXOs.. The 5335 measures the 5370 clock std dev as
4.35mHz. I think I'll have to check these against the Rb as I don't
have a GPSDO yet.
Thanks
Tim
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