[time-nuts] HP 5370B Output Help Needed

[John Miles]

To run two 5370Bs at once, you could drive the START inputs of the two counters with the 1-pps outputs from your GPIB clocks, and drive each STOP input with the opposing clock's 10 MHz output.  With the counters running in their default (+TI) mode you should see the 0-100 ns phase difference between each clock on the display.  

Getting at the data is a bit complicated, unfortunately, because the only "turnkey" timing/ADEV application I'm aware of (mine) will not let you perform more than one simultaneous GPIB acquisition, even if you install multiple copies of the program.  You would need two separate Windows PCs; two cheap/used laptops would work.  Someone else may have a favorite solution in mind for this problem.  

Worst-case, I can tell you how to install two copies of a separate GPIB package, and use them to spool the counter readings to two separate files that can then be monitored by the timing app.  It will be rather hackish, but it can be made to work.

-- john, KE5FX


> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of Perry Sandeen
> Sent: Wednesday, October 27, 2010 9:53 PM
> To: time-nuts-request at febo.com
> Subject: [time-nuts] HP 5370B Output Help Needed
> 
> 
> Distinguished Gents,
> 
> As soon as I get my replacement GPS hockey puck antennas, and get 
> my Lucent GPS receivers going I want to get into some serious 
> testing and calibration of my rubidium and Xtal oscillators.  I 
> plan to run two GPS receivers independently into two 5370B TICs 
> simultaneously for cross-checking the measurements.
> 
> Here are my problems.
> 
> I don’t know how to take data off of the HPIB connector on the 
> back of the 5370B.
> 
> What I want to accomplish is to have the readings go into a 
> computer and be graphed.
> I don’t have the money to buy some fancy piece of interface 
> equipment like Fluke1 on Ebay has and I have no ability to write 
> any type of software program.
> 
> I also need a Dummies book or course on how to setup and do Allan 
> variations.
> 
> I do have a dedicated computer that I can use for the project.
> 
> TIA for any help that can be given on or off line.
> 
> Regards,
> 
> Perrier
> 
> 
> 
>       
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to 
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.