Spectracom TSync-PCIe, Руководство пользователя

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TCXO OCXO
After 4 hours 12 μs 3 μs
After 24 hours 450 μs 100 μs
Table 3-2:
1PPS output specifications
3.10 GPIO Inputs
GPIO inputs to timing connector
50 ns active pulse width minimum
50 ns minimum between pulses
0V to +5.5 V input range, +0.8 V
VIL
, +2.0 V
VIH
Input impedance <150 pF capacitive
3.11 GPIO Outputs
GPIO outputs from timing connector
Pulse output: 50 ns to 900 ms active pulse width
Square wave output:
100 ns to 20 second period
50 ns to 900 ms active pulse width
Amplitude: TTL compatible, 4.3 V
min
, base-to-peak into 50 ohms
3.12 GNSS Receiver Specifications
The following specifications apply to both internal, and external GNSS receivers:
Acquisition time: <4 minutes from a cold start
Re-acquisition time: <2 sec (90%)
Frequency:
GPS L1 (1575.42 MHz)
GLONASS L1 (1602 MHz)
Satellites tracked: up to 32 simultaneously
Sync to UTC: within ±15 ns to GPS/UTC (1 sigma) (stationary)
3.10 GPIO Inputs
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Instruction Manual XYZ Rev. R
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