Speaker Control; Only); Intercom Operation (8); Intellivox® Intercom Vox-Squelch - PS Engineering PAC45D System Installation And Operation Manual

PS Engineering
PAC45A Audio Selector Panel and Intercom System
Installation and Operator's Manual
..
3.4.7 Speaker Control (PAC45D 050-045-0002, HUB45R 050-045-0102

only)

If equipped, the SPR label will be on the unit below the ICS button. Press and hold
the ICS button to toggle the output ON/OFF. When the speaker output is "ON", all
alerts, unswitched inputs and all switched inputs selected by the pilot will be pre-
sent. Intercom, telephone and music will never be present.
When the speaker output is "OFF", only alerts and unswitched inputs will be present

3.5 Intercom Operation (8)

3.5.1 IntelliVOX® Intercom VOX-Squelch
No adjustment of the IntelliVOX® squelch control is necessary. Through individual signal proces-
sors, the ambient noise appearing in all microphones is constantly being sampled. Non-voice sig-
nals are blocked. When someone speaks, only their microphone circuit opens, placing their
voice on the intercom.
The system is designed to block continuous tones; therefore, people humming or whistling in
monotone may be blocked after a few moments.
For consistent performance, any headset microphone must be placed within ¼-inch of your lips,
preferably against them. (ref: RTCA/DO-214, 1.3.1.1 (a)).
200-045-0100 Page 3-4 January 2020