David,
Do download the manual. Consider getting the hardprint manual.
The minumum you can expect of a seller is that they power the unit on,
and it should not show an error on start-up.
You can try to ask for them to do the performance check in the manual.
If the frequency measure is somewhat "off" from 10 MHz when measuring
against the internal time-base, that is nothing to worry about, as it
only tells you that you need to do calibration of frequency offset
(which is a time-offset in the hardware that needs manual calibration of
compensation constant, which isn't hard to do).
I recommend you to do both the performance check and calibration as you
receive it. I had one which was "suspect", but doing the performance
check and calibration removed any doubt, it was in fact somewhat better
than my first SR620.
Cheers,
Magnus
On 11/22/2014 12:51 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:
After regrettably selling my 5370B a few years ago, I decided to look for a
used SR620.
Are there any particular issues with these that could be tested by the
seller prior to shipping it? I have not downloaded the manual yet, but I
assume there's a basic test in there - probably similar to that in the
5370B manual.
Were these available with a Rb oscillator? I see a seller on eBay that he
has some Rb ones for $1500 extra, but I don't see it as an option on the
SRS web site.
Dr David Kirkby
Managing Director
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Chelmsford, Essex, CM3
6DT, United Kingdom
Registered in England and Wales as company number 08914892
http://www.kirkbymicrowave.co.uk/
Tel 07910 441670 / +44 7910 441670 (0900-2100 GMT)
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