Chapter 5: Installation
EST3X Technical Reference Manual 119
3X-PMI Paging Microphone Interface
The 3X-PMI provides controls for emergency voice and alarm communications in
the audio subsystem. The interface is installed on the backbox, below the
SFS1-ELEC assembly (see Figure 28). It consists of an audio mounting bracket,
EAEC Emergency Audio Evacuation Controller card, audio enclosure, and
paging microphone. In the 3-SDU, the 3X-PMI is identified in the cabinet
configuration as ASU, under Rail 2 Type (Configure > Cabinet).
See “Digital audio subsystem” on page 80 for detailed information on the 3X-PMI.
Refer to the 3X-PMI Paging Microphone Interface Installation Sheet
(P/N 3101875) for installation instructions and specifications.
Figure 28: 3X-PMI Paging Microphone Interface
(1) 3X-PMI Paging Microphone Interface
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