Comtech EF Data CDM-600/600L - Manual (Page 37)

CDM-600/600L Open Network Satellite Modem Revision 3
Introduction MN/CDM600L.IOM
1–9
1.3.5.2 Rear Panel
Figure 1-6. Rear Panel View
Figure 1-6 shows the connectors installed in the rear panel of the CDM-600/600L Open Network
Satellite Modem. Each connector outlined in Table 1-1 is described in detail in Chapter 3.
REAR PANEL CONNECTOR PINOUTS. External cables are attached to these connectors.
Table 1-1. CDM-600/600L Rear Panel Connectors
Connector Group
(Chapter 3
Sect. Ref.)
Ref Des / Name Connector Type Function
IF
(Sect. 3.2)
J1 Rx
CDM-600L: Type ’N’ female
(L-Band)
IF Input
CDM-600: BNC female
(70/140MHz band)
J2 Tx
CDM-600L: Type ’N’ female
(L-Band)
IF Output
CDM-600: BNC female
(70/140MHz band)
Terrestrial Data
(Sect. 3.3)
P3A Overhead 25-pin Type ‘D’ male
INTELSAT overhead – 64kbps RS-422, 1/16 IBS overhead
ESC @RS-232; IDR backward alarm
P3B Data Interface 25-pin Type ‘D’ female Serial synchronous data Input/Output
P4A Audio 9-pin Type ‘D’ female ADPCM audio Input/Output
G.703
Data
P7 Balanced 15-pin Type ‘D’ female
G.703 Balanced T1 (1.544 Mps) / E1 (2.048 Mbps) / T2
(6.312 Mbps)
J10A IDI BNC 75Ω female Insert Data In – G.703 Unbalanced E1 (2.048 Mbps)
J11A DDO BNC 75Ω female Drop Data Out – G.703 Unbalanced E1 (2.048 Mbps)
J10B Rx BNC 75Ω female G.703 Unbalanced E1 (2.048 Mbps) Rx
J11B Tx BNC 75Ω female G.703 Unbalanced E1 (2.048 Mbps) Tx
Utility
(Sect. 3.4)
P6 Aux Serial USB Type ‘B’ female
RS-232 Serial Remote interface for 1:1 Redundant
operations
J9
CDM-600L: Ext Clk
BNC 50Ω female
External Clock Input
CDM-600: Ext Ref External Reference Input
P4B Remote Control 9-pin Type ‘D’ male Serial Remote Interface (RS-232/-485)
P5A IDR Alarms 15-pin Type ‘D’ female Form C Alarms (backward alarm outputs)
P5B Alarms 15-pin Type ‘D’ male Form C Alarms (relay closures)
J12
CDM-600L: Ext Ref BNC 50Ω female External reference for modem synthesizers
CDM-600: Ext Freq Ref SMA female High-stability External Reference (optional)
Power/Ground
(Sect 3.5) AC See Sect. 3.5.1
Chassis power
DC (optional, CDM-600L only) See Sect. 3.5.2
Ground #10-32 stud Common Chassis 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.
CDM-600L
CDM-600