Comtech EF Data LBC-4000 - Manual (Page 39)

LBC-4000 L-Band Up/Down Converter System Revision 4
Rear Panel Connections MN/LBC4000.IOM
3–5
3.2 LBC-4000 Cabling Connections
Figure 3-3. LBC-4000 Rear Panel Connectors (Redundancy Unit Shown)
The LBC‐4000 rear panel connectors (Figure 3‐3) provide all necessary external connections
between the unit and other equipment. Table 3‐1 summarizes the connectors provided here,
grouped according to service function.
Table 3-1. LBC-4000 Connectors
Connector Group
(Sect.)
Connector Name
Ref
Des
Connector Type Function
RF/IF
(Sect. 3.2.1)
RF OUT/IN J4 Type ‘N’ female Unit B Module RF output/input
IF IN/OUT J5 Type ‘ BNC ’ female Unit B Module IF input/output
RF OUT/IN J6 Type ‘N’ female Unit A Module RF output/input
IF IN/OUT J7 Type ‘BNC’ female Unit A Module IF input/output
Utility
(Sect.3.2.2)
EXT REF IN J2 Type ‘BNC’ female External10 MHz Reference input
RELAY P1 9-Pin Type ‘D’ female Form C Unit Alarm
COM 1 J1 9-Pin Type ‘D’ male Serial M&C
Optional
Redundancy
RF/IF
(Sect. 3.2.3)
B SEC
IF Type ‘BNC’ female
Opt. Redun (top): To J4 IF In/Out
Opt. Redun (bot): To Modem
A PRI
Opt. Redun (top): To Termination
Opt. Redun (bot): To J6 IF In/Out
B SEC
RF Type ‘SMA’ female
Opt. Redun (top): To J5 RF In/Out
Opt. Redun (bot): To PA or LNA
A PRI
Opt. Redun (top): To Termination
Opt. Redun (bot): To J7 RF In/Out
1. 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.
2. See Sect. 3.1 Cabling Connections Types for information about each connector
type and its connection instructions.