[time-nuts] Communicating with the Lucent KS-24361

Anthony Roby aroby at antamy.com
Mon Nov 10 12:15:51 EST 2014

I had been unsuccessful communicating with these units using the RS232 to RS422 cable hack that Stewart Cobb described in his original post (https://www.febo.com/pipermail/time-nuts/2014-October/087274.html).   I was able to see, via a scope, the data coming out of the REF 1 unit, but it was never picked up on the PC.

I finally bought a USB to RS422/RS485 cable.  That didn't work out of the box - I needed to use the supplied breakout board to remap the pins to a DB9-M connector as follows (Tx- to pin 8, Tx+ to pin 4, Rx- to pin 9, Rx+ to pin 5, Gnd to pin 7).  All 4 wires were needed for this to work.

Thanks to Bob Camp and Tom Van Baak for their help on this


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