I'm certainly interested. I'm in the general zip code area, so I can pick up. Call me at 714 402-1280.
Thanks, Tom Sent from my HTC Inspire™ 4G on AT&T ----- Reply message ----- From: [email protected] To: <[email protected]> Subject: [time-nuts] HP Z3817A Reverse Engineering Date: Fri, Nov 8, 2013 7:07 am Hi All, We acquired a T-Bolt from an estate , its untested, seal is unbroken, it might be good or might be Drek, but in either event its free to someone for postage from 97113 to the lower 48. It will fit into a USPS Small Rate Box for $6. We could ship it international, but at this point we don't know the cost. Thank You Thank You Kiss-Electronics Ms Ashley Hall 183 N 5th Avenue Cornelius, Oregon 97113 W7DUZ www.kiss-electronics.com -----Original Message----- From: Ed Palmer <[email protected]> To: Discussion of precise time and frequency measurement <[email protected]> Sent: Sun, Oct 27, 2013 1:54 pm Subject: Re: [time-nuts] HP Z3817A Reverse Engineering Hi David, Skip Withrow and I were able to figure out the connections and the basic operational features. I've attached a document that describes our findings. I wouldn't mind picking up another E1938 oscillator, but I'm reluctant to buy one that might have mismatched oscillator and circuit board (i.e. the serial numbers don't match). I've asked a couple of vendors if the serial numbers matched, but they won't respond. Does anyone have any experience with a mismatched combination? How's their performance? Ed On 10/27/2013 1:26 PM, David Hooke wrote: > > Hi Ed, > > My E1938 also came from a very battered STLN4096A from the same > source, and I might also try to get the other boards functional. Could > you share the details of the GPS connections, and which GPS receiver > you used? > > Cheers, > > david > >> 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 -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
