Digital Interfaces; And Mil-Std-188-114 Interface; Functional Description; Figure 3-2. Rs-422 And Mil-Std-188-114 Interface Board - Comtech EF Data SDM-650B Installation And Operation Manual

SDM-650B Satellite Modem

3.2 Digital Interfaces

3.2.1 RS-422 and MIL-STD-188-114 Interface

3.2.1.1 Functional Description

The RS-422 and MIL-STD-188-114 digital interface (Figure 3-2) provides the level
translation, buffering, and termination between the internal modem signals and the
RS-422 or MIL-STD-188-114 interface connector on the rear panel. A functional block
diagram of the interface is shown in Figure 3-3.
ADDRESSING SELECT JUMPERS
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Figure 3-2. RS-422 and MIL-STD-188-114 Interface Board

Rev. 5
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ASSEMBLY AND
REVISION NUMBER
Configuration
RS-422/MIL-188
ADAPTOR CONNECTOR
RS 422
3–7