Comtech EF Data CDM-625 - Manual (Page 48)

CDM-625 Advanced Satellite Modem Revision 15
Introduction MN-CDM625
1–12
1.3.9.3 Rear Panel
Chapter 3. REAR PANEL CONNECTORS AND PINOUTS
Figure 1-4. CDM-625 Rear Panel Features
(Top) Standard AC Chassis (CEFD P/N PL/12587-1)
(Bottom) Optional 48VDC Chassis (CEFD P/N PL/12587-2)
Figure 1-4 shows the rear panel of the modem. External cables are attached to connectors on
the rear panel of the unit. They comprise:
Connector Group
(Chapter)
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.