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This section describes the Non-Alarm Audio (NAA) Interface using a circuit on the 4100-0622
Digital Audio Riser (DAR) Module (566-407) or the 4100-1341 MCC Digital Audio Riser module
(566-833).
This function provides a way to interface a non-alarm audio source to Channel 2 of the Power
Distribution Interface (PDI). If you use this module as a NAA interface only (analog system only),
then you would use it without a TIC or 4100-0623 Audio Riser Controller Module (566-249).
IMPORTANT: DO NOT install a 4100-0622, -1341 Digital Audio Riser Module using
the NAA interface IN THE SAME BAY with an Analog Audio
Controller Module (or any module that would control Channel 2 of
the PDI). Both modules would try unsuccessfully to control the
PDI’s Channel 2.
If the modules must co-exist in the same box, then they must reside in separate bays, and have an
audio harness connecting them without Channel 2 connections being made. The connecting audio
harness may be a modified harness (734-167) available from the factory or a standard audio
harness (734-052) that you modify as shown in Figure 15. Figure 15 shows two wires on the left
that are cut close to the connector and discarded. The two cut wires were formerly connected to
Pins 3 & 6 of the PDI audio connector.
Figure 15. Modified Standard Audio Harness for Specific NAA Application
Continued on next page
Non-Alarm Audio (NAA) Interface
Overview
LOCKING TAB
CUT THESE TWO WIRES
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