PS Engineering
PAC45J Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-045-2000
Page 3-5
November 2020
3.7.1
Pairing and unpairing Bluetooth devices
The PAC45J can be paired with up to eight individual devices but will only connect to one at a time. When
that number is exceeded, the PAC45J will drop a device to allow the new device to be added.
Once paired, the audio controller should connect automatically.
Hint, if your devices are not recognized by the PAC45J, you may need to cycle Bluetooth on or off from your
device. If that does not help, you may need to reset the Bluetooth module, Press and hold HRTF and ICS
buttons for more than three (>3) seconds. Then “forget” the audio controller from your device, and repair.
3.7.2
Bluetooth® Telephone Mode
The PAC45J serves as a full duplex interface for telephone systems such as portable cellular phones with
Bluetooth connectivity.
Warning:
United States FCC Regulations contained in 47 CFR § 22.925 currently contain prohibition on airborne op-
eration of cellular telephones. “Cellular telephones installed in or carried aboard airplanes, balloons or any
other type of aircraft must not be operated while such aircraft are airborne (not touching the ground). When
any aircraft leaves the ground, all cellular telephones on board that aircraft must be turned off.”
Answering or placing a call is done from the mobile phone. Once con-
nected, the audio is routed through the headset(s) by selecting the TEL
button.
For a single CTL45J installation:
In
ALL
intercom mode, all crew and passengers will be heard on the phone when they speak.
In
CREW
mode, the pilot and copilot are connected to the telephone.
In
ISO
intercom mode, when the PAC45J is in the
TEL
mode, the pilot position is in the "Phone Booth."
Only the pilot will hear the telephone, and only he will be heard.
For multiple CTL45J installation:
Each users CTL45J controls their access to the telephone audio.
NOTE
PS Engineering does not guarantee compatibility with personal cellular telephones.
3.7.2.1
Bluetooth Reset
To reset the Bluetooth module, clearing out the connected devices, press HRTF and ICS for more than three
seconds.
3.7.3
Music Muting Control (Front Panel Selection)
The PAC45J incorporates PS Engineering’s trademark “SoftMute”. The SoftMute™ circuit will mute the
music whenever there is conversation on the radio or the intercom. When that conversation stops, the music
returns to the previous level comfortably, over a second or so.
Pressing the MUTE button will turn the music muting on/off. Green light
on, music mutes. Green light off then music will continue to play without
muting.
When in mute off mode, the intercom, radio & PTT will not mute the music. The music muting will reset to
mute “ON” mode at each power cycle.
Any
control head will switch the muting on or off for
all
users.