[time-nuts] Control and monitor program for Spectracom 8195B

[Taka Kamiya]

Yes, I noticed there was an instructions on setting the range of OCXO's high and low, so it falls within "correctable" range of the PLL.  I bet many GPSDO has something like this - just not explained so explicitly in manuals.
Can we try sending the .exe again?  I think if you zip up the below picture and .exe together, it should work.  (that's how it was working before)

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(Mr.) Taka Kamiya
KB4EMF / ex JF2DKG
 

    On Tuesday, July 30, 2019, 12:00:33 AM EDT, Mark Sims <holrum at hotmail.com> wrote:  
 
 I got in an 8195A and managed to get Heather working with the wonky, very much not computer friendly,  Spectracom interface and command set.

When you send a command to the device it echoes back the characters.  This is very useful for telling what command the device is responding to.  But, about half the time, the echoed characters were garbled.  Also several response messages came back corrupted.  Oh, and occasionally the unit would lock up and require a power cycle to recover.  The problem turned out to be that you can't send command strings to the device at computer friendly speeds.  You need several milliseconds of delay between each character you send!

Anyway, Heather now work with the Spectracom "ageless" oscillators.  BTW, for an "ageless" oscillator, these units have a procedure for correcting oscillator aging  ;-)

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> The problem with the 8195 is that the serial port software interface was designed for human interaction with very little regard paid to supporting a computer monitoring program._______________________________________________
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