Product specifications

CDM-710 Broadcast Satellite Modem Revision 10
Connector Pinouts MN/CDM710.IOM
Redundancy is available only with the Rev. A chassis or later.
1:N (CRS-300/710) And 1:1 Mode (CRS-170A, CRS-180)
Pin # Description Name Direction
8
15
7
Summary Relay NC (De-energized, Faulted)
Summary Relay NO (Energized, No Fault)
Summary Relay COM Note 1, 2
PR-NC, *
PR-NO
PR-COM
I/O
I/O
I/O
14 Clock Detect Clk Det I
6 Aux Tx Enable Red_Out_4 O
13 No Connection NC NC
5 Fused -12 VDC Output (160 mA max) -12VDC O
12 Fused +12 VDC Output (160 mA max) +12VDC O
4 Online Red_In_2 I
11 Serial Clock Red_Out_1 O
3 Serial Data Red_Out_2 O
10 Receive Serial Data – auxiliary channel Red_In_3 I
2 Transmit Serial Data – auxiliary channel Red_Out_3 O
9 Ext Carrier Off (TTL Lo = Mute, Open = Tx) Red_In_1 I
1 Ground GND Gnd
Notes :
1. The relays have low voltage contacts with transient suppressors across each pin
to ground. The suppressors were removed starting in October 2007 with Framer
Card SN 071539628. The Summary Relay combines Tx, Rx, and Unit Faults
into a single relay.
2. The maximum working voltage = 18VDC or 13VAC. The maximum current
rating is 1 Amp DC or 0.5 Amp AC.
4.1.7 RS-232/-485 Remote Port Connector Pinout, P2
The Remote connector is a 9-pin Type ‘D’ male connector with threaded jack
nuts.
Pin # Description Direction
1 Ground
2 RS-232 Transmit Data Out
3 RS-232 Receive Data In
4 Not Used
5 Not Used
6 RS-485 Receive Data B * In
7 RS-485 Receive Data A * In
8 RS-485 Transmit Data B Out
9 RS-485 Transmit Data A Out
* Use for 2-wire RS-485 operation
4–5