MAPNET@ INTERFACE (TRANSCEIVER) BOARD (562-976)
Features and Functions
Each board can handle one channel of MAPNET II@ devices.
l
A single channel can contain up to 127 devices.
Supervises MAPNET II@ wiring for opens and shorts.
Communicates with the Master Controller Board via Connector Pl on its motherboard.
Component Locations and Functions (Figure 25)
LED1
Lights when there is a trouble associated with the board.
Proarammable EPROMs
IC14 = 740-683 EPROM. Contains the card’s program.
IC9 = 740-671 EPROM. Controls peripheral communications.
Identical in function to Switch SW1 in an 8-Zone Monitor Card.
IC14
LED1
SW1
IC9
P3 P2
Pl
Figure 25
MAPNEl@ Interface (Transceiver) Board
Jumpers
NOTE:
The following jumpers are zero-ohm resistors.
43
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