AFRTS Defense Media Center Satellite Handbook
AFRTS Defense Media Center Satellite Handbook
AFRTS Defense Media Center Satellite Handbook
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<strong>Defense</strong> <strong>Media</strong> <strong>Center</strong> <strong>Satellite</strong> <strong>Handbook</strong> V.3.26<br />
Figure 8-5 SR-8 network management port to a terminal and<br />
Figure 8-6 SR-8 network management port to a PC terminal<br />
The SR-8 Multiplexer operates in several different modes determined by switch<br />
selections and the state of critical RS-232-D leads.<br />
Loopback Mode - This mode is activated by switch selection or through the<br />
network management port control. In loopback, the SR loops back any signals<br />
received to the originating source. Loopback is bi-directional.<br />
On-Line Multiplexing - This is the normal mode of operation where all ports are<br />
active.<br />
Off-Line – This mode exists when position 3 (DCD) is negative on the composite<br />
channel connector.<br />
8-9
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