Here is a summary of the info I've collected on the Lucent KS-24361 so far. Hopefully this saves someone from having to subject themselves to TimeNuts mailing list archives. By the way - see below for details on that continous output from connector J6 that I pasted earlier in the thread.
Useful LinksEEVBlog Thread (here):
https://www.eevblog.com/forum/testgear/economical-option-for-precision-frequency-reference/Time Nuts thread with pinouts and other details:
http://permalink.gmane.org/gmane.comp.time.nuts/40898Original Time Nuts thread:
https://www.febo.com/pipermail/time-nuts/2014-October/087274.html
J6 (RS422/1PPS) Pinout1 - PPS+
3 - GND
4 - RX+
5 - TX+
6 - PPS-
7 - GND
8 - RX-
9 - TX-
All others not connected
J8 (Diagnostic) Pinout3 - GND
4 - RX+
5 - TX+
7 - GND
8 - RX-
9 - TX-
All others not connected
Info on interfacing to PC using the Gearmo USB to RS-422 converterGearmo USB to RS-485/RS-422 Converter, model # US-485422.
Link to product on Gearmo.com:
http://www.gearmo.com/shop/usb-to-rs485-rs422-converter-with-ftdi-chip/Link to product on Amazon:
http://www.amazon.com/gp/product/B005CPLOVWThe Gearmo uses an FTDI chip, and they have a download link to the FTDI drivers on their web site. You can also just grab the FTDI drivers from their web site (ftdichip.com). I believe the FTDI chip is RS232RL. It's also possible that the drivers can be installed via Windows Update
The Gearmo product comes with a little terminal board connected to a DB9-male connector. The terminal strip connections are labelled and match the names below (T/R+, RXD+, etc.). Note that the Gearmo documentation, and labels on the terminal strip, refer to "TXD" as "T/R".
Gearmo RTFG-u/REF0/1 J6 & J8
-------- ----------------
1 (T/R+) --> 4 (RX+)
2 (T/R-) --> 8 (RX-)
3 (RXD+) <-- 5 (TX+)
4 (RXD-) <-- 9 (TX-)
5 (GND) --- 7 (GND)
J6 Continuous OutputJ6 starts up in a mode where it continuously emits time strings (see format below). You can switch it
into interactive mode by sending this command:
:ptim:tcod:cont 0
To switch back to continuous time mode, send this command:
:ptim:tcod:cont 1
Here is a sample output of J6 from my KS-24361 (REF 1):
:110100001842E03C7FA401AC
This string is a ':' character followed by 24 hex digits
character
(hex ascii) use values
----------- ------- ---------------------------------------------
0 ':' Line always starts with ':'
1 talker 0 = ref 0, 1 = ref 1
2 status 0 = active, 1 = inactive
3 (unused) 0
4 mode 0 = warmup, 1 = gps, 2 = holdover, 3 = fault
5 to 8 (unused) 0000
9,10 time hours in this mode
11 to 18 GPS time seconds since GPS start in 1980
19 to 22 Firmware Rom version
23,24 checksum
Use this site to convert GPS time (convert the number from hex to decimal first):
http://www.andrews.edu/~tzs/timeconv/timeconvert.php?The sample output above translates to:
Talker=Ref 1
Status=Inactive
--
Mode=GPS
Hours in mode=0x18 (24)
GPS time = 0x42E03C7F (1121991807) -> 2015-07-27 00:23:10 UTC
ROM version = 0xA401
Checksum = 0xAC (Sum each byte (two hex digits) and take the low order byte of the result).
Some useful commands::SYST:STAT?
(Dumps useful status info)
:GPS:POS:SURV:PROG?
(Shows survey progress)
:GPS:INIT:DATE YYYY,MM,DD
:GPS:INIT:TIME HH,MM,SS
(Date and time in UTC)
:GPS:INIT:POS N|S,DD,MM,SS.SSS,W|E,DDD,MM,SS.SSS,AAA
(AAA is altitude above MSL in meters)
:DIAG:LOG:READ:ALL?
(Dumps log)