Do you have a brand/model that you can get off the XL-DC power supply? I would think Symmetricom would use the same model for the systems that fit in that common 1U chassis (but I could be wrong). If the model matches mine, I can tell you the voltages & pins used and I'm sure you could find a cheap one off eBay that would do the trick with a little re-wiring.
The boards (from what I have seen) don't have any onboard battery backup, so I can only assume they have non-volatile flash chips. I haven't seen the inside of the XL-DC or XL-AK so it could be different. Jason > Ladies and Gentlemen, > > I am currently analytically involved in solving two different problems with a TrueTime XL-DC and a TrueTime GPS-DC. > > Schematics for both would be most helpful and efficient but, of course, not absolutely necessary for a successful diagnosis and corrective action. > > If anyone would happen to have any schematic representation of either or both of these GPS systems, I would be grateful. > > Many thanks to some Time-Nuts Contributors, I do have the operational manuals for the XL-DC and the XL-AK but that is all. No schematics included and I > realize that they are very hard to spring from TrueTime. But maybe, just maybe, someone - somewhere has achieved this feat. > > The XL-DC's switching power supply is down and the GPS-DC has some backup memory supply issues and the data entry keyboard is worn out and to the point > of being totally non-responsive. > > Thanks in advance. > > I remain and must press on, > Gar Won Ko > CsUTC Observatory > Bio-Nucleonics Laboratory > Wichita _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
