[time-nuts] Looking for IEEE-488 codes and formats for Datum 9700AT Programmable Time System

[Bob kb8tq]

Hi

Yes, there is what appears to be a socketed ROM on the board. Next step seems to be to dump
the ROM and see what’s inside. 

Bob

> On Apr 9, 2018, at 3:55 PM, Forrest Christian (List Account) <lists at packetflux.com> wrote:
> 
> Just curious, is there by chance a removable eprom or other programmable
> device on these boards?
> 
> Assuming a fairly verbose scpi like command interface, I've occasionally
> had luck reverse engineering a command set by looking through an eprom dump
> for a list of commands?
> 
> Also, does this by chance respond to the standard scpi commands like *IDN?
> and *TST?
> 
> On Mon, Apr 9, 2018, 12:24 PM Bill <breed at otelco.net> wrote:
> 
>> I have two of these with 488  interfaces.
>> Would appreciate any 488 info you get.
>> breed at otelco.net
>> 
>> -----Original Message-----
>> From: Bob kb8tq
>> Sent: Saturday, April 07, 2018 10:27 PM
>> To: leedyt at aol.com ; Discussion of precise time and frequency measurement
>> Subject: Re: [time-nuts] Looking for IEEE-488 codes and formats for Datum
>> 9700AT Programmable Time System
>> 
>> Hi
>> 
>> Actually the manual is moot on any sort of remote control. The RS-232
>> section refers you to an insert
>> in the back of the manual. I’d guess that the 488 stuff was done the same
>> way.
>> 
>> Nasty question: Are you sure you have the 488 option installed?  It would
>> not be the first piece of gear
>> produced that never really got a 488 firmware version …..
>> 
>> Bob
>> 
>>> On Apr 7, 2018, at 11:11 PM, Tom Leedy via time-nuts <time-nuts at febo.com
>>> 
>>> wrote:
>>> 
>>> 
>>> Hi:
>>> 
>>> I am looking for the IEEE-488 codes and formats for a Datum 9700AT
>>> Programmable Time System.  The 9700AT is a 1U time generator and
>>> translator with slots in the back that can accept option cards with
>>> various functionalities such as -488 and RS-232 interfaces, GPIO, and
>> tape
>>> searches.  What I need is the character strings to output the time for
>>> the -488 interface.  The manual for the unit is here:
>>> 
>> http://www1.symmetricom.com/media/files/support/ttm/product-manual/man-9700at-9710.pdf
>>> However, it is silent on the details of the -488 interface.
>>> 
>>> Any help would be appreciated and feel free to contact me offline.
>>> 
>>> Many thanks!
>>> 
>>> Tom Leedy
>>> Clarksburg, MD
>>> 
>>> 
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