Here is a little more info on the OT-20. I connected my OT-20 to a cell antenna and a 48VDC power supply and let the unit warm up. I used a terminal emulator set to 9600 8N1 to talk to the unit. The link below is the response of the OT-20 to various commands I sent to it. Press "shift ?" on your terminal emulator to have the unit send you the list of accepted commands.
After warming up and locking to the CDMA signal, most of the alarm LEDs went out. The one that stayed on indicated that there was only one 48VDC supply connected and that is considered a minor alarm condition. Jumpering the 2 inputs will eliminate this alarm. The output BNC on my unit puts out a 10Mhz sine wave. There is also a DS1620D1 chip in the OT-20 to report the temper- ature and probably aid in keeping the output closer to the 10Mhz during periods of holdover http://farm6.static.flickr.com/5134/5448082945_13798a2669_b.jpg -Arthur _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.