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5 Hardware
PCS-9785 Satellite-Synchronized Clock
5-12
Date: 2014-10-15
Pin No.
Symbol
Description
21
Empty
22
Empty
The output polarity mode and the output signal mode can be selected by setting the corresponding
jumpers on the module.
Table 5.6-5 Output signal mode of NR1216A
Signal mode Group 1 (Jumper "ON") Group 2 (Jumper "ON")
PPS
JP20
JP9
PPM
JP21
JP10
IRIG-B
JP22
JP11
PPH
JP23
JP12
NOTICE!
The jumpers JP1~JP8 correspond to the current-limiting resistance of the No.1~8
output contacts. Set "
OFF
" to connect a 7500Ω current-limiting resistance in serial.
5.6.3 ST Connector (NR1217A)
The COM module NR1217A provides 8 optical ports (ST connector). The No.1~4 ports form the
group 1 and the No.5~8 form the group 2.
NR1217
TX
TX
TX
TX
TX
TX
TX
TX
Figure 5.6-4 COM Module (NR1217A)
08020
08020
08020
08020
08020
08020
08020
08020
08020