J
SWI-2 through SW1 -8 = Card address select switches (SW1 -2 = MSB, SW1 -8 = LSB).
LED1
SW1
LED2
LED3 LED4
1
RUI ASSY 565-217A 2
Figure 30
Remote Unit Interface Card
DECODER MODULE (565270)
Features and Functions
Provide an interface to mechanical and electronic coded initiating devices.
Component Locations and Functions (Figure 31)
LED1
Lights during initialization until communications are
established with the 4100 Master and whenever
communications are lost with the Master.
16 character x 2 line LCD that is used in programming the Decoder Module. Potentiometer Rl is used to adjust the
LCD contrast for best viewing.
Switches
SW1
Up = PROGRAM mode (allows codes of the stations connected to the Decoder to be entered.
While in this mode, alarm reporting is disabled, and a “MAPNET Communications Failure”
message is indicated at the 4100 front panel)
Down = NORMAL mode (enables Alarm Decoding and reporting)
SW2-SW7 Push button switches which are used in programming the Decoder
SW2 = Selects programming mode
SW3 = Move Left
50
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