[time-nuts] Used ESE ES-911/GPS/NTP Master Time Clock Power Supply
The Triad VPS12-2000 transformer seems to be the best readily available alternative to the original wall-wart power supply so far for the ESE ES-911/GPS/NTP. The two 6 volt windings can be strapped in parallel to provide 4 amps. It won't fit within the 1U case so some sort of external enclosure is necessary. While the ES-911 will operate on a 6 volt 2 amp wall-wart and the internal 5 volt rail is within spec, the other voltages are low. With the Triad unit, the internal battery now floats at 6.8 volts, a more reasonable value. Under load, the Triad puts out 7.1 volts AC, the same as the no-load output of the 2 amp wall-wart previously used. This information may be of some use to others who obtain an ESE ES-911/GPS/NTP or similar unit that is missing the external AC power supply. KE6CD ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Used ESE ES-911/GPS/NTP Master Time Clock
GREAT ! Surplus ESE units (like those from 911 system upgrades) have often been disconnected and in storage for weeks or months, before being posted on the auction sites. This storage time plus age of the units (10-25 years), produce dead batteries — requiring their replacement. As noted by Mark Sims, do not forget the replace the battery (if present) on the GPS receiver (Motorola M12+ in the ES-911) for reliable operation (holding config). — For bargain hunters, I picked up an ESE ES-160U Master Clock for $5.00 this summer (no GPS or disciplined oscillator option, BUT has time code outputs). The millennial seller was selling as “not working, for parts” ... Replaced both batteries ($15), set the time with ESE computer application (via RS-232 port), and this master clock has been running “within a second” of my GPSDO. greg == Date: Sat, 7 Dec 2019 10:44:48 -0800 From: Frederick Bray To: Subject: Re: [time-nuts] Used ESE ES-911/GPS/NTP Master Time Clock 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 == ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Used ESE ES-911/GPS/NTP Master Time Clock
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 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 -- time-nuts@lists.febo.com >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. > > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Used ESE ES-911/GPS/NTP Master Time Clock
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 -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Used ESE ES-911/GPS/NTP Master Time Clock
CONGRATS. I was trying to understand how the MSC51 processor could have failed, but the Motorola M12 receiver was functional. The ML621 sold as solder-tab or coin version (for socket). ~ $2.00 each. My Harbor Freight Digital Caliper uses the ML621 coin cell size (as well as my 1980s HP 10-series calculators) https://www.digikey.com/products/en/battery-products/batteries-rechargeable-secondary/91?k=ML621 Panasonic LC-R061R3P : 6 volt gel cell, at $12.84 each. https://www.digikey.com/product-detail/en/panasonic-bsg/LC-R061R3P/P128-ND/6671 It sounds like you could “Mod” the ES-911 Auxiliary connector to function as GPS receiver port (routing TTL level signal via a MAX232 level converter) Greg w9gb == When I received an ESE ES-160U, earlier this year (June 2019), both of it batteries were also DEAD (common from eBay surplus). Its behavior was erratic, to say the least. Changing both of those batteries (2) restored the ES-160U unit to operation (accurate master clock). Not bad for a $5.00 purchase, being sold “for parts”, plus $15 for new batteries. === Message: 7 Date: Sun, 3 Nov 2019 06:39:00 + From: Mark Sims To: "time-nuts@lists.febo.com" Subject: [time-nuts] Used ESE ES-911/GPS/NTP Master Time Clock I got my ESE ES-911 to work. The problem that I was seeing was that the unit was not seeing data from the GPS receiver... it would not show a GPS lock, even though the GPS receiver (a Motorola M12+) was working properly.Probing around the ESE motherboard showed the GPS receiver was not sending any data.I assumed (improperly) that the GPS receiver was not being initialized to send data by one of the two microprocessors on the ESE motherboard (no data seen being sent to the GPS receiver). There are two batteries in the ES-911. One is a 6V 1.2Ah gel cell. The other is a tiny ML-621 rechargeable lithium coin cell on the back of the GPS board. Both batteries were dead. It turns out that the microprocessors do NOT initialize the GPS receiver! You have to do that over the "auxiliary" data port (the DB-25 connector). Pin 2 is the "config" pin. It is a RS-232 level serial input connected to the GPS receiver RXD input pin. There is no external connection to the GPS TXD signal so you cannot monitor the GPS receiver. To initialize the GPS receiver, I built a two wire adapter cable to connect a PC serial port to the ESE "aux" connector (PC pin 3 (TXD) to ESE pin 2, ESE pin 7 (ground) to PC pin 5. I then used Lady Heather configured to talk to Motorola receivers (heather /rxm /serial_port#) This sends commands to initialize the Motorola receiver on the ES-911 motherboard. Voila... ESE-911 started working properly. Note that Heather will complain about not seeing any data from the receiver since the ES-911 does not have any way to send the GPS serial data to the outside world. While connected to the "config" port you can use the "PC" keyboard command to set the antenna cable delay. Note that this will be a "blind" command with no apparent response back to the computer. After initializing the GPS receiver I moved the PC serial port cable to the ES-911 "broadcast" connector and re-started Heather. Heather v6.30 and later can decode the ES-911 time codes sent out the "broadcast" port. So if your ESE ES-911 loses input power, 6V backup battery power, and the GPS coin cell drains then you will need to fix the battery problems and then manually re-initialize the GPS receiver in order to get the device working again! ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
[time-nuts] Used ESE ES-911/GPS/NTP Master Time Clock
I got my ESE ES-911 to work.The problem that I was seeing was that the unit was not seeing data from the GPS receiver... it would not show a GPS lock, even though the GPS receiver (a Motorola M12+) was working properly.Probing around the ESE motherboard showed the GPS receiver was not sending any data. I assumed (improperly) that the GPS receiver was not being initialized to send data by one of the two microprocessors on the ESE motherboard (no data seen being sent to the GPS receiver). There are two batteries in the ES-911. One is a 6V 1.2Ah gel cell. The other is a tiny ML-621 rechargeable lithium coin cell on the back of the GPS board. Both batteries were dead. It turns out that the microprocessors do NOT initialize the GPS receiver! You have to do that over the "auxiliary" data port (the DB-25 connector). Pin 2 is the "config" pin. It is a RS-232 level serial input connected to the GPS receiver RXD input pin. There is no external connection to the GPS TXD signal so you cannot monitor the GPS receiver. To initialize the GPS receiver, I built a two wire adapter cable to connect a PC serial port to the ESE "aux" connector (PC pin 3 (TXD) to ESE pin 2, ESE pin 7 (ground) to PC pin 5. I then used Lady Heather configured to talk to Motorola receivers (heather /rxm /serial_port#) This sends commands to initialize the Motorola receiver on the ES-911 motherboard. Voila... ESE-911 started working properly. Note that Heather will complain about not seeing any data from the receiver since the ES-911 does not have any way to send the GPS serial data to the outside world. While connected to the "config" port you can use the "PC" keyboard command to set the antenna cable delay. Note that this will be a "blind" command with no apparent response back to the computer. After initializing the GPS receiver I moved the PC serial port cable to the ES-911 "broadcast" connector and re-started Heather. Heather v6.30 and later can decode the ES-911 time codes sent out the "broadcast" port. So if your ESE ES-911 loses input power, 6V backup battery power, and the GPS coin cell drains then you will need to fix the battery problems and then manually re-initialize the GPS receiver in order to get the device working again! ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
[time-nuts] Used ESE ES-911/GPS/NTP Master Time Clock
I got in one of these... alas, the GPS module does not seem to work. It never locks to GPS. Alas, there is no status information to tell what is going on. These units only output a time code (in one of 4 different formats). All configuration is done via DIP switches. They do not output any satellite or other information. For what it's worth... Lady Heather can now read the time code information and use it to drive the clock display. I am going to try putting in a new GPS receiver. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Used ESE ES-911/GPS/NTP Master Time Clock
The eBay auction number : 223703183757 gb Sent from iPad Air > On Oct 13, 2019, at 5:07 PM, Gregory Beat wrote: > > > Time Nuts — > > 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. > > 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). > == > Greg, w9gb > Chicago > > Sent from iPad Air ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
[time-nuts] Used ESE ES-911/GPS/NTP Master Time Clock
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 -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
