Arbiter Systems 1088A, Руководство по эксплуатации

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100 Technical Specifications and Operating Parameters
A.2.5 Satellite Tracking
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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.
A.2.6 Acquisition
•
150 seconds typical, cold start
•
15 minutes, 90% confidence, cold start
•
40 seconds, typical, with almanac < 1 month old
•
15 seconds, typical, with ephemeris < 4 hours old
A.3 I/O Configuration
Output signals, or the designated input, may be selected on specified connector by means of internal
push-on jumpers. Each output connector is independently buffered.
A.3.1 I/O Connectors
Standard I/O connectors may be configured to any one of the output signals listed in Section A.3.2
below, or a specific input function as listed, or any function listed in additional outputs as listed
in the option list in Appendix C.
•
Signals on standard outputs, four BNC user configurable
•
Option 03, adds four additional configurable outputs; Option 27 adds eight, high-drive IRIG-B
outputs; Option 29 adds four additional configurable outputs with 75 mA per channel.
A.3.2 Standard Output Signals
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IRIG-B: 1 kHz modulated, 10 Vpp
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IRIG-B, D, E, or H: 5 V CMOS
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1 PPS, 1 PPM, 1 PPH: 5 V CMOS
•
10, 50, 60, or 100 PPS: 5 V CMOS
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1, 10, or 100 kPPS: 5 V CMOS
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1, 5, 10 MPPS: 5 V CMOS
•
5 V CMOS
• 1-PPS deviation (chart recorder): ± 5 V at 10 µ s/v
•
IRIG-B Modified Manchester (IEEE Std 1344)
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Out of Lock: 5 V CMOS (HI = Locked, LO = Unlocked)
• Programmable Pulse, user-selectable: 5 V CMOS
•
CMOS outputs are buffer type (74HC126) with 47-ohm source resistors
•
Analog outputs are op-amp (LF353) followers with 557-ohm protective resistors
A.3.3 Input Functions
•
Event A/1-PPS Input: 5 V TTL/CMOS
•
Event B/1-PPS Input: 5 V TTL/CMOS
•
External Timebase Input: 100 kHz, 1, 5, or 10 MHz