Spectracom TSync-PCIe, Руководство пользователя

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TCXO OCXO
@1 Hz — –85
@10 Hz — –113
@100 Hz –110 –120
@1 KHz –135 –140
@10 KHz –140 –150
Signal wave form & levels:
+13 dBm into 50 ohm, ±3 dB
Table 3-1:
10-MHz output specifications
3.8 External 1PPS Input
External 1PPS reference input to timing connector
1 Hz pulse,
rising edge
or
falling edge active
(selectable)
100 nsec. minimum pulse width
0 V to +5.5 V input range, +0.8 V
VIL
, +2.0 V
VIH
Input impedance <150 pF capacitive
3.9 1PPS Output
1PPS output at timing interface connector
1 Hz pulse,
rising edge
or
falling edge active
(selectable)
40 ns to 900 ms active pulse width (selectable, 200 ms default)
Rise time: <10 ns
Signal level: TTL compatible, 4.3 V
min
, base-to-peak into 50 ohms
Accuracy:
Positive edge within ±50 nanoseconds of UTC when locked to a valid 1PPS input
reference
TCXO OCXO
Accuracy to UTC
(1-sigma locked to GPS)
±50 ns ±50 ns
Holdover
(constant temp after 2 weeks of GNSS lock)
12
CHAPTER
3
•
Instruction Manual XYZ Rev. R
3.8 External 1PPS Input