Have you already this?
On the TIB (P1) DB-25 connector, I'm fairly confident about these: V+ pins 1 and 21 V- pins 8 and 25 10MHz #1 pins 2/15 xfmr coupled, ~4.6V into 1M 10MHz #2 pins 23/16 xfmr coupled, ~4.6V into 1M 1PPS pin 14 Supply voltage is dictated by Lucent DC-DC converter. Input is 18-36V, 1.9A. Still chasing down the other pins. Currently I am working on a possible disciplining input: input of some kind to U6/3 via 100 ohms pin 18, prob. diff with 4 input of some kind to U6/2 via 100 ohms pin 4, prob. diff with 18 The MMI (J1) DB-9 connector is RS-232, 9600baud, 8n1 and runs a a familiar SCPI interface. On Sun, Jan 8, 2012 at 6:20 PM, Ed Palmer <ed_pal...@sasktel.net> wrote: > I recently purchased a Motorola STLN4096A with the HP E1938A oscillator. > I bought it for the oscillator only. > > Then I got intrigued by the HP Z3817A GPSDO that's included. I've reverse > engineered most of it and I've got it running. The 1 PPS is really good ( > 1000 measurements, Std. Dev. of <200 ps, min to max range of <1.5 ns) and > the HUP is very slowly dropping (currently at 13 us after ~1.5 days) as the > oscillator works out the kinks after it's long sleep. It's dropping much > slower than my Z3801A did when I first turned it on. > > There's one input that I haven't been able to figure out. I've got data > in and 1 PPS in from the GPS receiver. Everything seems to be working so > I'm at a loss what that the other input could be for. There are no clues > to it's function because it appears to go into one of the Xilinx chips. > > Does anyone have any more info on the unit? Has anyone figured out the > other input? > > I have searched the net and the archives. There's very little info or > discussion on this unit. > > Ed > > > _______________________________________________ > 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. > _______________________________________________ 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.