[time-nuts] Lucent KS-24361 RS-422 interface pinout

[Hal Murray]

>From a few days ago...

goetz at g-romahn.de said:
>> Pins 4 and 8 look like inputs.  Does anybody know what you
>> can send in there?

> Hal, it's already known to us:
> http://www.mail-archive.com/time-nuts%40febo.com/msg69593.html 

Thanks.

Summary:
  If you send "ptim:tcod:cont 0", that turns off the automatic (continuous) 
time messages.
  It doesn't turn on sending "scpi > " to tell you when it is ready for 
another command.

Without the scpi, I thought a short delay might be needed.  Except for two 
cases, it isn't.  There may be more cases that I haven't discovered.

The first case is switching to T2 mode.  It takes about a second for the scpi 
on the Diagnostic port.  I assume it's writing to flash.  A delay in that 
path works without any delay in the normal case.

The other case that needs special handling is the status page.  I check for 
"Self Test:", then in the normal case discard the scpi.

I have python code that does what I want and works on both J6 (no scpi) and 
J8 (with scpi).  Every 30 seconds, it reads several parameters and writes 
them to a log file, then displays the status page.  Poke me off-list if you 
want a copy.  It's running on Linux but might be easy to port to Windows.

The bottom line is that you (or NTP) can get both the text interface and PPS 
on a single connector.



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