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Comtech EF Data CDM-750 User Manual

Page 52

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CDM-750 Advanced High-Speed Trunking Modem

Revision 2

Rear Panel Connections

MN-CDM750

3–6

Table 3-1. CDM-750 Rear Panel Connectors

Connector Group

(Chapter 3 Sect.)

Ref

Des

Name

Connector Type

Function

IF
(Sect. 3.2.1)

J9

L-BAND RX IN

Type ’N’ female

IF Input

J11

IF RX IN

BNC female (70/140MHz band)

J12

L-BAND TX OUT

Type ’N’ female

IF Output

J13

IF TX OUT

BNC female (70/140MHz band)

J10

TX MON

Type ’SMA’ female

Monitor L-Band Output

Utility
(Sect. 3.2.2)

J1

ALARM

15-pin Type ‘D’ male

Form C Alarms (relay
closures)

J2

REDUNDANCY

9-pin Type ‘D’ female

Connection to External 1:1

Redundancy Switch

J3

REMOTE

9-pin Type ‘D’ male

Serial Remote Interface

(EIA-485/232)

J4

MGMT

RJ-45 female

10/100 BaseT M&C

J8

EXT REF

BNC female

External Reference Input /

Output

Terrestrial Data

(Sect. 3.2.3)

J5 DATA

RJ-45 female

10/100/1000 BaseT Gigabit

Ethernet traffic

J6 DATA

J7 OPTICAL

SFP (Small Form Factor

Pluggable) Module cage

Accepts optional hot-

pluggable SFP 1000Base-SX
850mm Transceiver Module

N/A

INTERFACE OPTION

SLOT 1

PIIC (Plug-In Interface Card) slots

Accepts optional data

interface modules (e.g., G.703

E3/T3/STS-1, OC-3 Single /
Multi Mode. STM-1 Copper,

etc.)

N/A

INTERFACE OPTION

SLOT 2

The European EMC Directive (EN55022, EN50082‐1) requires using properly shielded cables for 
DATA  I/O.  These  cables  must  be  double‐shielded  from  end‐to‐end,  ensuring  a  continuous 
ground shield. 

See Sect. 3.1 Cabling Connections Types for information about each connector type and its 
connection instructions.