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2. Unit Description
2.1. Front Panel
As shown in Figure 2.1, the PLS-345 Front Panel includes the
following components:
À
Circuit 1: Status indicator lights and manual controls for
Circuit 1. Includes the following:
A) Line "A" Selector Button and Status LED: Press
the "A" button to switch the common line for Circuit 1
to the "A" connector. The LED adjacent to the
Selector Button will light when Line "A" is selected.
B) Line "B" Selector Button and Status LED: Press
the "B" button to switch the common line for Circuit 1
to the "B" connector. The LED adjacent to the
Selector Button will light when Line "B" is selected.
Note: Each circuit can either be manually switched
using the corresponding selector button, manually
switched using the Master A/B Switch, switched in
response to the /A and /B commands, or switched
automatically by the Monitor feature.
Á
Circuit 2: Same as item 1 above, except these
components control switching of common line 2.
Â
Circuit 3: Same as item 1 above, except these
components control switching of common line 3.
Ã
ON: Lights when AC Power is applied to the PLS-345.
2-1
Figure 2.1: Front Panel