Product specifications

CDM-710 Broadcast Satellite Modem Revision 10
Connector Pinouts MN/CDM710.IOM
4.1.5 External Reference Input (Main Chassis), J7
The Ext Ref (External Reference) input is used to supply a master reference to the entire chassis.
The clocks on the Framer Card and the Modulator and Demodulator Synthesizers are locked to
this input, when it is used:
Some
data
interfaces have an Ext-Clk input for synchronizing the data sources. See the individual data
interface card for details.
Initially released
chassis
Female SMA connector
Rev. A and later
chassis
Female BNC connector
4.1.6 Alarm Connector Pinout, P1
The Remote connector is a 15-Pin Type ‘D’ male connector with threaded jack
nuts. The pinout depends upon whether the unit is in the Normal or redundancy
mode for use with the CRS-170A (L-Band) and CRS-180 (70/140 MHz) or
CRS-300 redundancy switches. The unit is put into 1:1 mode under the Config:
AUX Æ 1:1 Mask Æ Ena/Dis menu by selecting Enable.
Normal Mode
Pin # Description Name Direction
8
15
7
Rx Traffic (De-energized, Faulted) Note 1, 2
Rx Traffic (Energized, No Fault)
Rx Traffic
Rx-NC
Rx-NO
Rx-COM
I/O
I/O
I/O
14
6
13
Tx Traffic (De-energized, Faulted) Note 1, 2
Tx Traffic (Energized, No Fault)
Tx Traffic
Tx-NC
Tx-NO
Tx-COM
I/O
I/O
I/O
5
12
4
Unit Fault (De-energized, Faulted) Note 1, 2
Unit Fault (Energized, No Fault)
Unit Fault
Unit-NC
Unit-NO
Unit-Com
I/O
I/O
I/O
11
3
Rx I Channel (Constellation Monitor)
Rx Q Channel (Constellation Monitor)
Rx-I
Rx-Q
O
O
10 No Connection NC NC
2 AGC Voltage (Rx signal level, 0-10 volts) AGC O
9 Ext Carrier Off (TTL Lo = Mute, Open = Tx) EXT-OFF I
1 Ground GND Gnd
4–4