Intercom Modes; Bluetooth® Connection; Pairing And Unpairing Bluetooth Devices - PS Engineering PAC45D System Installation And Operation Manual

PS Engineering
PAC45A Audio Selector Panel and Intercom System
Installation and Operator's Manual
Some passenger headsets are connected in parallel. Therefore, if a monaural headset is plugged
in to a PAC45D Stereo installation, one channel may be shorted. Although no damage to the unit
will occur, all passengers with stereo headsets will not hear one channel, unless they switch to
the "MONO" mode on their headset.
NOTE: Mono headsets that short the tip and ring (i.e. older models) will introduce some au-
dio distortion when used. Modern, stereo headsets are recommended in all positions.

3.5.4 Intercom Modes

The "ICS" pushbutton switch on the panel provides the
selection of the intercom modes
The intercom mode defaults to "ALL" at power up. Then
the button cycles through the intercom modes, from top
to bottom, then bottom to top as: ISO, ALL CRW, ALL. A
green indicator shows which mode is currently active.
I : The pilot is isolated from the intercom and is con-
SO
nected only to the aircraft radio system. He will hear the
aircraft radio reception (and sidetone during radio trans-
missions). Copilot will have radios, intercom and music. Passengers will have intercom and mu-
sic.
A : All parties will hear the aircraft radio, intercom and music. During any radio or intercom
LL
communications, the music volume automatically decreases. The music volume increases gradu-
ally back to the original level after communications have been completed.
C : Pilot and copilot are connected on one intercom channel and have exclusive access to the
RAW
aircraft radios.
3.5.4.1 Remote ICS Mode Control (P454 connector pin 18)
An optional external switch can act as a remote intercom mode selector. Pressing the switch will
increment the intercom mode selector from ISO-ALL-CRW-ALL, etc. each time the button is
pressed.
3.6 Bluetooth® connection
The PAC45D has an internal Bluetooth module (FCC ID: QOQWT32AE), no external boxes re-
quired. The audio controller is always "discoverable," so you just need to search for the PAC45
from your Bluetooth-equipped phone or music source. Default access code is not required. Once
the PAC45D has been "paired" with your Bluetooth device, the TEL distribution will act as de-
scribed in § 3.7.2.

3.6.1 Pairing and unpairing Bluetooth devices

The PAC45D can be paired with up to eight individual devices, but will only connect to one at a
time. When that number is exceeded, the PAC45D 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 PAC45D, 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 TEL and ICS buttons for more than three (>3) seconds. Then "forget" the PAC45 from your
device, and pair again.
200-045-0100 Page 3-6 January 2020