Hi, Bought one of the above gps clocks at a radio rally last Sunday. Looked ok on the outside, but severe corrosion from a leaked backup battery inside. Cleaned all that up, replaced some caps and a few other parts on the psu board and now at least partially working. All the menus seem to work, no signal or power failures, leds blinking 1pps on the main board and all rear panel outputs seem ok.
Problem is that the gps engine fails to initialise in post. Can't find any reference for this model on the web. Did find an 8820 manual, but that has a different mainboard and the serial port command set doesn't work on the 8810, though characters are echo'd. This looks like very early gps module and no info on the web for it. Read one page that suggests that this module might be similar to the Magnavox MX4200 and perhaps a connection to Truetime ?, but no other info found. The board says "Magnavox GPS Engine", with a part number label 900578-803-3. Data codes on the devices are 1990-1992, so must be a very early model. Question is, are there any later gps modules compatable with this device in terms of command set, or perhaps a known working board for sale, or a manual somewhere ?. There's a neat output board that takes a 10 Mz input, to provide 4 of each 1, 5 and 10Mhz sine wave outputs on the back panel, useful in itself, but it would be good to have this working, to add to the collection. Thanks, Chris _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
