PS Engineering PDA360EX Pilot's Manual And Operation Manual page 7

Adjust the radios (at the radio itself) and intercom volume for a com-
fortable listening level.
Mono headsets in Stereo Installation
Not recommended, because the benefit of IntelliAudio is lost.
However, if desired, the PDA360EX can be installed monaurally by
using the LEFT audio connections only (left side contains Fail-Safe
audio). Do NOT short left and right together.
NOTE: Mono headsets that short the tip and ring (i.e. older mod-
els) will introduce some audio distortion when used. Modern, ste-
reo headsets are recommended in all positions.
Intercom Modes (8)
The "ICS" pushbutton switch on the panel provides the selection of
the three intercom modes. The description of the intercom mode func-
tion is valid only when the unit is not in the "Split" mode. In the split
mode, the pilot and copilot intercom is controlled by the ICS button
selecting CRW.
This button cycles through the intercom modes, from left
to right, then right to left as: ISO, ALL, CRW and
CRW, ALL, ISO. A green indicator shows which mode
is currently active.
ISO (Pilot Isolate): The pilot is isolated from the inter-
com and is connected only to the aircraft radio system. He will
hear the aircraft radio reception (and sidetone during radio trans-
missions). Copilot will hear passengers' intercom and Music,
while passengers will hear copilot intercom and Music. Neither
will hear aircraft radio receptions or pilot transmissions. The pilot
can hear music if desired.
ALL: All parties will hear the aircraft radio and intercom. Crew and
passengers will hear selected Music. During any radio or intercom
communications, the music volume automatically decreases. The
music volume increases gradually back to the original level after
communications have been completed. The music muting can be
activated by radio only, radio and intercom, or nothing, for a
Karaoke mode.
CRW (C
): Pilot and copilot are connected on one intercom chan-
REW
nel and have exclusive access to the aircraft radios. They may
also listen to Music. Passengers can continue to communicate
Oct. 2015 PDA360EX Pilot Guide 202-360-0000 Page 7