20
Refer to Figure 13 for examples of Class A and Class B wiring. The +, S, and - connection points
are silkscreened on the board.
If you are wiring a Class B MAPNET channel, connect a jumper between the two positive
terminals and a jumper between the two minus terminals, as shown in the figure below.
Figure 13. Wiring MAPNET Channels
Notes:
1. Wire length may not exceed 3,270 feet (1 km).
2. TB1-3 or TB1-7 are internally connected to Earth and are the normal termination
point for MAPNET shields. Some audio systems may require MAPNET shields to
be tied to System 0 V to minimize MAPNET cross-talk to speakers.
Wiring the MAPNET Channel,
Continued
Wiring Diagrams
Class B Wiring
Class A Wiring
MAPNET LINE TO DEVICES
PRIMARY
MAPNET LINE
TO DEVICES
SECONDARY
MAPNET LINE
TO DEVICES
TB1-7 (See
Note 2)
TB1-3 (See
Note 2)
TB1
TB1
TB1-7
(See Note 2)
TB1-3 (See
Note 2)
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