Finally received my replacement batteries and a suitable wall-wart. After installing the batteries and initialization as per the instructions posted to the list, it started working correctly with the original receiver.
Thanks to all who helped. F.W.Bray > On Nov 26, 2019, at 2:04 PM, Frederick Bray <[email protected]> wrote: > > I picked up one of these and swapped out the GPS receiver, installing a > Jackson Labs M12M replacement and temporarily using an external 6 volt SLA > for backup. The new receiver works fine, its on-board display shows that it > sees a bunch of satellites and goes into hold. However, I can't get a > readable display on the ES-911 or the GPS lock LED to come on on the unit. > > Has anyone else tried this or had display problems? > > Thanks. > > KE6CD > >> On 10/13/2019 3:07 PM, Gregory Beat via time-nuts wrote: >> Time Nuts — >> >> The ESE ES-911/GPS/NTP unit was specifically designed to meet the National >> Emergency Number Association (NENA) Standard NENA-04-002 for a Public Safety >> Answering Point (PSAP) Master Clock. It traditionally provides “Time >> Synchronizing” all components of a PSAP. >> == >> Used (surplus) ES-911/GPS/NTP units have appeared on eBay from an east coast >> reseller. These units were likely surplussed, due to 1024 week rollover >> issues (GPS). >> NTP and PSAP usage (911 centers) require an accurate date. >> >> Two nice photos (on auction page) show inside of the rack cabinet. >> Some Highlights: >> >> * This ES-911/GPS/NTP model was replaced by ES-911E (new features, >> components) by the “ES-911E” production model. Newer model has disciplined >> 10 MHz option (K-option). >> >> * Rack mount enclosure. Plenty of Room for a DIY addition. >> * Units are powered by 6 Volts AC (coaxial connector, rear panel). >> * 12-channel GPS receiver (ESE normally used Motorola M12(+) receivers). >> Contact Art Sepin at Synergy for 1024 rollover or multi-GNSS receiver >> replacement. >> https://synergy-gps.com/products/gps/timing-boards-modules/ >> >> * 10Base-T port (10 Mbps) for Network Time Protocol (NTP) usage. >> ESE formally use WizNet for that plug-in PCB (current vendor ?). >> ES-911 can serve as local time server (NTP) for home network (TCP/IP). >> >> * 6 Volt battery (under aluminum bracket in eBay photos), >> Digi-Key P128-ND, Panasonic LC-R061R3P >> Assume the battery is dead and replace with fresh one, $12.84 USD >> >> * Unit has 1 PPS as well as time-code outputs for remote time displays >> (useful). >> >> ESE ES-911 Product Sheet (copy not downloadable, from ESE web site) >> http://a2dcorp.us/pdf/ese/ES-911%2520GPS%2520NTP.pdf >> >> After you have purchased ES-911/GPS/NTP, Contact ESE Support (with product >> SN). >> ESE can provide (via email) the PDF of Product Manual with Schematic diagram >> and Parts List. BONUS: Parts are listed for the Options (ESE uses common >> PCB). >> >> Firmware is password protected (ESE intellectual property) and >> Flashed/EEPROM in the often Intel MCS-51 (8051) processor. >> == >> Greg, w9gb >> Chicago >> >> Sent from iPad Air >> _______________________________________________ >> 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. > > _______________________________________________ > 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. _______________________________________________ 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.
