Comtech EF Data CDM-740, Installation And Operation Manual

Page: 45 / 150

CDM-740 Advanced Satellite Modem Revision 0
Rear Panel Connector Pinouts MN-CDM740
3–3
3.2 IF Connections
There may be DC voltages present on the Type ‘N’ Rx and Tx IF connectors, up
to a maximum of 48 volts.
3.2.1 Rx IF Connectors
Ref Des Connector
Type
Description Direction
L-BAND IN 1 Type ‘F’ Rx IF signal, L- Band In
L-BAND IN 2 Type ‘N’
(UNUSED) (UNUSED)
3.2.2 Tx IF Connectors
3.3 Terrestrial Data Connections
3.3.1 GE-1 and GE-2 Ethernet Connectors, RJ-45
These are two standard RJ-45 female modular jacks, operating at 10/100/1000
Mbps, half and full duplex, auto-negotiating.
Note: The maximum Ethernet packet size is 1522 bytes (including Ethernet
headers and CRC).
3.3.2 FE (Fast Ethernet) Connector, RJ-45
This is a standard RJ-45 female modular jack, operating at 10/100 Mbps, half and full
duplex, auto-negotiating.
Note: The maximum Ethernet packet size is 1522 bytes (including Ethernet headers
and CRC).
Ref Des
Connector
Type
Description Direction
L-BAND OUT Type ‘N’ Tx IF signal, L- Band
Out
IF OUT BNC
Tx IF signal,
70/140 MHz band
L-BAND MON Type ‘F’
L-Band Monitor of
70/140 or L-Band
CA UTIO N