Appendix A
Technical Specifications and
Operating Parameters
A.1 Scope
In this section you will find information relating to the functional and operational characteristics
of the standard Model 1092A/B/C and 1093A/B/C Satellite Controlled Clocks. Topics included in
this section are Receiver Characteristics, I/O Configuration, System Interface(s), Antenna System,
Operator Interface(s), and Physical Specifications.
NOTE: Specifications are subject to change without notice.
A.2 Receiver Characteristics
A.2.1 Input Signal
• GPS L1 C/A code, 1575.42 MHz.
A.2.2 Timing Accuracy
GPS/UTC time ±500 ηs rms (at 1-PPS output), when receiving 4 or more satellites (one satellite
if position is known within 25 meters.)
A.2.3 Position Accuracy (rms)
• 25 meters, SA (USA Department of Defense Selective Availability) OFF, 100 meters, SA ON.
A.2.4 Satellite Tracking
• 12 channels, C/A code (1575.42 MHz)
The receiver simultaneously tracks up to twelve satellites. Results from all tracked satellites are
averaged in Position-Hold Mode or, with Position-Hold Off, are determined by least-squares esti-
mation.
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