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5 Hardware
PCS-9785 Satellite-Synchronized Clock
5-4
Date: 2014-10-15
Do
NOT
look into an optical port/connector.
A direct sight to laser light may cause temporary or permanent blindness.
NR1110D
PTP 1
PTP 2
PTP 3
PTP 4
Ethernet 1
Ethernet 2
Figure 5.4-1 MON module
5.5 CLK Module (Satellite Signal Receiver)
The CLK module receives and processes satellite signal and external IRIG-B code. It converts
them into PPS/PPM/PPH, IRIG-B code and timing message and transmits them to the MON
module and COM modules via the internal bus.
5.5.1 NR1145 for Clock Source
Table 5.5-1 Sub models of NR1145
Sub models
Timing signal
input channel
NR1145A NR1145B NR1145C NR1145D NR1145I NR1145J NR1145K
BDS
0
0
1
0
1
0
0
GPS
0
1
1
2
1
1
1
IRIG-B
ST
2
2
2
2
2
0
2
RS-485
0
2
0
TTL
0
0
0
0
0
0
Time Freq. Measurement
0
0
0
0
1
0
1
08020
08020
08020
08020
08020
08020
08020
08020
08020