Mocomtech CDM-570L Manual De Usuario

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CDM-570/570L Satellite Modem with Optional IP Module 
Revision 4 
Connector Pinouts 
MN/CDM570L.IOM 
5.5 
BNC Connectors  
There are three BNC connectors located on the rear panel of the modem. Refer to 
Table 5-5 for pin assignments. 
 
Table 5-5.  BNC Connectors  
BNC 
Connector 
Description 
Direction 
EXT REF 
External Reference Input 
In 
G.703 Out 
Rx G.703 (Unbalanced) 
Out 
G.703 In 
Tx G.703 (Unbalanced) 
In
 
 
 
5.6 Unit 
Alarms 
 
Unit alarms are provided on a 15-pin male connector located on the rear panel of the 
modem. Refer to Table 5-6 for pin assignments. 
 
Table 5-6.  Alarm Interface Connector Pin Assignments 
Pin # 
Signal Function 
Name 
15 
Rx Traffic (De-energized, Faulted) 
Rx Traffic (Energized, No Fault) 
Rx Traffic 
RX-NC 
RX-NO 
RX-COM 
14 
13 
Tx Traffic (De-energized, Faulted) 
Tx Traffic (Energized, No Fault) 
Tx Traffic 
TX-NC 
TX-NO 
TX-COM 
12 
Unit Fault (De-energized, Faulted) 
Unit Fault (Energized, No Fault) 
Unit Fault 
UNIT-NC 
UNIT-NO 
UNIT-COM 
11 
Rx I Channel  (Constellation monitor) 
Rx Q Channel (Constellation monitor) 
RX-I 
RX-Q 
10 No 
Connection 
N/C 
AGC Voltage (Rx signal level, 0 to 10 volts)  
AGC 
9 EXT 
Carrier 
OFF 
EXT-OFF 
1 Ground 
GND 
 
 
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