Dear Edgardo,
On 14/11/12 04:37, Edgardo Molina wrote:
Dear Azelio, Tom, John and Luciano ( I hope I am not missing anybody),
Thank you all of you for your kind advise on this subject. I am sorry I was
unable to reply in a timely manner. I had to leave town for a week for new IT
business. I think I will start by dismantling the unit display and test the
tantalum capacitors as you mentioned. If I can achieve success by doing this it
is fine. Otherwise I could consider using it as the GPIB workhorse as I just
started to obtain my first ADEV, MDEV and TDEV graphs with TimeLab and a
Prologix adapter. May I know the command for turning the display off via the
GPIB port? That is something nice for long periods of sampling.
A whole new world has just opened to me. Know I am starting to get intimate
with my frequency standards by knowing them in deep. If all goes well I should
start updating my wish list for a Wavecrest DTS unit next year. For now I will
squeeze every single Tau value from the graphs using the 53132A.
Last but not least. If the display fades away I could eventually consider
buying a new one as the whole instrument is in pristine condition and would be
a shame to see it working without a brilliant display.
Thank you for all your feedback.
Wishing you all a pleasant evening/morning.
It seems like you need to do what I did, go to the agilent site and
download the manuals. Operations and Programming manuals is easy, there
is then a service manual and component-level manual.
The programming manual should assist you on turning of the screen.
The component level manual does not detail the power-supplies.
Did anyone here analyse the analogue interpolators of the 53131/53132?
It's a relative simple design being used with a single transistor and
charging a cap and then read from an ADC. The ADC reference voltages can
be calibrated from a DAC. Notice that there exists two versions of the
main board, for each of the models and that they have different
schematics set in the same manual.
Cheers,
Magnus
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