Technical data

Appendix A - Technical Data Symmetricom(PPGPS Receiver
1PPS Output:
Locked Time error < 100ns when locked to GPS signals.
Unlocked Accumulated time error: <100µs accumulated in 24
hours of unlocked operation.
(Max 10°C / hour rate of change, between 0-60°C)
Pulse Width 488ns negative Amplitude TTL compatible into a 50Ω
load.
Holdover Stability 3µs/3 hours from loss of satellites.
10µs/5 hours from loss of satellites.
15µs/8 hours from loss of satellites.
100µs/24 hours from loss of satellites.
Holdover Return <10µs error = no jump in 1pps.
>10µs error = jump in 1pps
The unit must be powered up for 3 days at least and locked to GPS for
12 hours prior to the holdover period.
2.048 MHz Output:
Output 2.048 MHz
Wave Shape Square Wave.
Amplitude TTL compatible into a 50Ω load.
Timing Receiver Connectors:
1PPS BNC - female, 50Ω nominal.
GPS Antenna TNC - female.
Power Input 4-way Binder - male.
Time of Day RS-232 DB9S - female (DCE)
CMD/CDU RS-232 DB9S - female (DCE)
2.048 MHz Output BNC - female 50Ω
GPS Timing Receiver Installation and Operation Manual
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