Data Interfaces
SDM-2020 Satellite Demodulator
A–62
Rev.3
A.7.3.5.2
Auxiliary Interface Connector –J5
This port provides input/output of the modem-specific signals. The connector is 9-pin
subminiature D female, with threaded jack nuts. Refer to for connector pinouts.
Table A-36. Auxiliary Interface Connector –J5
Auxiliary Connector Pinout
Signal Function
Name
Pin #
Type
Comment
1
GND
Signal Ground
Demodulator Fault
Indicator
DF
2
O
Demodulator Summary Fault. Open
Collector. Redundancy switch
appplication
3
N/C
Request to Send
RTS
4
I
Modulator Request to send. TX control.
TTL
5
N/C
Modulator Fault Indication
MF
6
O
Modulator Summary Fault. Open
collector. Redundancy switch
application.
Carrier Detect
CD
7
O
Demodulator. Carrier detect. TTL
Legend: O = Output
I = Input
N/C = No Connection
A.7.4 SMPTE-310M/SSI
Defaults
Refer to (Table A-37) for default settings for the interface.
Table A-37. Interface Defaults
Interface Defaults
RTS Control
Off
RTS State
Normal
Data or Clock Polarity
Normal
Frame Format
188
Loss of Data
Alarm
Clock/Data SYNC
Correlate on data
Содержание SDM-2020
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