Comtech EF Data CDM-625A - Figure 1-4. CDM-625 A Rear Panel View; Rear Panel Features

CDM-625A Advanced Satellite Modem MN-CDM625A
Introduction Revision 4
1–12
1.3.9.3 Rear Panel Features
Chapter 3. REAR PANEL CONNECTORS AND PINOUTS
(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
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.)
Name Connector Type Function
IF
(Sect. 3.2.1)
Rx
BNC female (70/140MHz band)
IF Input
Type ’N’ female (L-Band)
Tx
BNC female (70/140MHz band)
IF Output
Type ’N’ female (L-Band)
Terrestrial Data
(Sect. 3.2.2)
Data Interface
25-pin Type ‘D’ female
Serial synchronous data input/output
G.703
Data
Balanced G.703
9-pin Type ‘D’ female
G.703, D&I or D&I++; Quad E1 Ports 1 & 2
Auxiliary G.703
9-pin Type ‘D’ female
Quad E1 Ports 3 & 4
Unbalanced Out
BNC female
Receive G.703 (IDO); ASI
Unbalanced In
BNC female
Transmit G.703 (DDI); ASI
IDI BNC female
Insert Data In / Sub-rate Auxiliary Tx G.703
In
DDO BNC female
Drop Data Output / Sub-rate Auxiliary Rx
G.703 Out
10/100 Ethernet
(4X) RJ-45 female
10/100 BaseT management and data
IDR Data/Alarms/Audio
44-pin High Density Type ‘D’ female
Intelsat Open Network auxiliary signals
ESC
9-pin Type ‘D’ female
ESC input/output (RS232/485)
Utility
(Sect. 3.2.3
Remote Control
9-pin Type ‘D’ male
Serial Remote Interface (RS232/485)
Alarms
15-pin Type ‘D’ male
Form C Alarms (relay closures)
PMSI
9-pin Type ‘D’ female
Pre-Mapped Symbol Interface (CnC)
1:1 Control
9-pin Type ‘D’ female
Connection to External 1:1 Controller
External Reference
BNC female
Input/output
Ground / Power
(Sect 3.3)
Ground
#10-32 stud – See Sect. 3.3.1
Common Chassis Ground
AC Power (Standard)
See Sect. 3.3.2
Chassis power
DC Power (Optional)
See Sect. 3.3.3
Chassis power
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.