Rear Panel Features; Figure 1-4. Cdm-625A Rear Panel View - Comtech EF Data CDM-625A Installation And Operation Manual

CDM-625A Advanced Satellite Modem
Introduction
1.3.9.3

Rear Panel Features

Chapter 3. REAR PANEL CONNECTORS
Figure 1-4 shows the rear panel of the modem. External cables are attached to connectors on
the rear panel of the CDM-625A. They comprise:
Connection Group
(Chapter Sect.)
IF
(Sect. 3.2.1)
Terrestrial Data
(Sect. 3.2.2)
Utility
(Sect. 3.2.3
Ground / Power
(Sect 3.3)
The European EMC Directive 2004/108/EEC (EN 55022, EN 50024) requires using properly
shielded cables for DATA I/O. These cables must be double-shielded from end-to-end, ensuring
a continuous ground shield.
(TOP) Standard AC Chassis (CEFD P/N PL-0021325)
(BOTTOM) Optional 48V DC Chassis (CEFD P/N PL-0021327)

Figure 1-4. CDM-625A Rear Panel View

Name Connector Type
BNC female (70/140MHz band)
Rx
Type 'N' female (L-Band)
BNC female (70/140MHz band)
Tx
Type 'N' female (L-Band)
Data Interface 25-pin Type 'D' female
Balanced G.703 9-pin Type 'D' female
Auxiliary G.703 9-pin Type 'D' female
Unbalanced Out BNC female
G.703
Unbalanced In BNC female
Data
IDI BNC female
DDO BNC female
10/100 Ethernet (4X) RJ-45 female
IDR Data/Alarms/Audio 44-pin High Density Type 'D' female Intelsat Open Network auxiliary signals
ESC 9-pin Type 'D' female
Remote Control 9-pin Type 'D' male
Alarms 15-pin Type 'D' male
PMSI 9-pin Type 'D' female
1:1 Control 9-pin Type 'D' female
External Reference BNC female
Ground #10-32 stud – See Sect. 3.3.1
AC Power (Standard) See Sect. 3.3.2
DC Power (Optional) See Sect. 3.3.3
PINOUTS
AND
Function
IF Input
IF Output
Serial synchronous data input/output
G.703, D&I or D&I++; Quad E1 Ports 1 & 2
Quad E1 Ports 3 & 4
Receive G.703 (IDO); ASI
Transmit G.703 (DDI); ASI
Insert Data In / Sub-rate Auxiliary Tx G.703
In
Drop Data Output / Sub-rate Auxiliary Rx
G.703 Out
10/100 BaseT management and data
ESC input/output (RS232/485)
Serial Remote Interface (RS232/485)
Form C Alarms (relay closures)
Pre-Mapped Symbol Interface (CnC)
Connection to External 1:1 Controller
Input/output
Common Chassis Ground
Chassis power
Chassis power
1–12
MN-CDM625A
Revision 4