[time-nuts] 5370A

[Bruce Griffiths]

Joe

You can check a lot of the functionality from the front panel.
Make sure that it works well using the front panel controls before
checking that the HPIB interface works.

To check the HPIB functionality you will need an HPIB/GPIB interface for
your PC.
It is easy to duplicate the tests done by the program on the 9825 tape
using Ulrich's EZGPIB (if you use windows).
Otherwise if you use Linux or FreeBSD, etc., and have a Prologix
LAN/GPIB interface then you can program the tests using Python.

Bruce

Joseph Gray wrote:
> I keep thinking of things instead of going to bed.
>
> In the 5370A manual, the ops verification of the HPIB port requires an
> old HP computer and a program on tape. Needless to say, I don't think
> I'm going to come across either of these items. So, has anyone managed
> to duplicate that test with modern tools? Or, should I not worry about
> testing the port if it works at all?
>
> Now I really need to hit the sack. Goodnight (or morning) to all.
>
> Joe Gray
> KA5ZEC
>
> On Sat, Oct 10, 2009 at 3:14 AM, Joseph Gray <jgray at zianet.com> wrote:
>   
>> John,
>>
>> Trigger levels are set to "Preset" for most steps. In step 18, I
>> verified that Preset is 0V and the Level voltage varied from
>> aproximately -1.3 to +0.6 volts. The manual specifies "approximately
>> -1.3 to +0.5 volts."
>>
>> In step 15, the standard deviation was bouncing around between about
>> 36-57pS. The manual says that less than 100pS is good.
>>
>> Time for bed.
>>
>> Joe Gray
>> KA5ZEC
>>
>> On Sat, Oct 10, 2009 at 2:32 AM, John Miles <jmiles at pop.net> wrote:
>>     
>>>> Bruce,
>>>>
>>>> Thanks for the tip. I was very careful. Only one board was really
>>>> stuck. I left it alone for now.
>>>>
>>>> Just for the heck of it, I did a few more steps in the Chapter 4
>>>> Operation Verification. As I said, discounting the bad BNC, step 13
>>>> reads aproximately 103.6nS, so I continued.
>>>>
>>>> Steps 14, 15 and 16 are ok.
>>>>
>>>> Step 17 shows 3.6nS (should be < 1nS). Period Compliment shows
>>>> -96.3nS. Something very wrong here.
>>>>         
>>> What are your trigger levels?  A small departure from 0.00 volts could
>>> account for this.
>>>
>>> Also, what's the standard deviation when measuring its own OCXO?
>>>
>>> -- john, KE5FX
>>>
>>>
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