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CDM-625 Advanced Satellite Modem
Introduction
Connector Group
Name
(Chapter 3 Sect. Ref.)
IF
Rx
(Sect. 3.2)
Tx
Terrestrial Data
Data Interface
(Sect. 3.3)
G.703
Data
10/100 Ethernet
IDR Data/Alarms/Audio
ESC
Utility
Remote Control
(Sect. 3.4)
Alarms
PMSI
1:1 Control
External Reference
Power/Ground
AC
(Sect 3.5)
DC
Ground
Note: 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.
1.3.1.3 Major Assemblies
Assembly
PL/12587-1
PL/12587-2
PL/12575-1
PL/11963-1
PL/12875-1
PL/12874-1
1.3.2
Software – Flash Upgrading
The internal software is both powerful and flexible, permitting storage and retrieval of up to 10
different modem configurations. The modem uses flash memory technology internally, and new
firmware can be uploaded to the unit from an external PC. This simplifies software upgrading,
Connector Type
BNC female (70/140MHz band)
Type 'N' female (L-Band)
BNC female (70/140MHz band)
Type 'N' female (L-Band)
25-pin Type 'D' female
Balanced G.703
15-pin Type 'D' female
Auxiliary G.703
15-pin Type 'D' female
Unbalanced Out
BNC female
Unbalanced In
BNC female
IDI
BNC female
DDO
BNC female
(4X) RJ45 female
44-pin High Density Type 'D' female
9-pin Type 'D' female
9-pin Type 'D' male
15-pin Type 'D' male
9-pin Type 'D' female
9-pin Type 'D' female
BNC female
See Sect. 3.5.1
See Sect. 3.5.2
#10-32 stud
Description
Chassis - AC
Chassis - DC
Modem Card
Baseband Framing Card
®
DoubleTalk
Carrier-in-Carrier
LDPC and Turbo Product Codec card
MN-0000036 (Ref MN/CDM625.IOM)
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
Intelsat Open Network auxiliary signals
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
Chassis power
Chassis power
Common Chassis Ground
®
card
1–4
Revision 1
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