PS Engineering Aerocom III - Manual (Page 4)

Page 4 Operation Manual aerocom® III
200-003-0001 Rev 5 September 2013
9V battery (Duracell MN1604, or
equiv.). After about 12 hours of use,
the battery will be exhausted. At this
point the copilot position can no longer
transmit, extending the remaining bat-
tery life, although the intercom is still
active. At this time the battery should
be replaced, or the aerocom III discon-
nected from the aircraft. The aerocom
III does have a fail safe system, so the
pilot can continue to use the aircraft
radio when the battery is depleted.
To replace the battery, open the
battery compartment located on the
bottom of the unit (see Fig. 6).
Carefully remove the battery and
disconnect the clip. Connect a
fresh 9V battery, and reinstall into
the unit.
Aircraft power (12 or 28 VDC)
can be connected using the power
cable (provided). When using ex-
ternal power, be sure that the plug
is fully engaged with the jack, with
the plug body against the unit case.
It is not necessary to remove the
battery when using aircraft power.
OPERATING INSTRUCTIONS
Switch on the aerocom III by turning
the volume control knob clockwise.
This also engages the automatic fail-
safe system.
Adjusting the Volume
The volume control knob adjusts the
loudness of the intercom for both
headsets. Turning the control clock-
wise increases the audio. Many head-
sets have volume controls on them. If
it becomes necessary to reduce the
volume for an individual headset, the
other should be set at maximum, and
the unit volume set for a comfortable
level. That individual can then reduce
their volume accordingly.
The volume control on the aerocom
III does not affect the volume level of
the aircraft radio or music.
VOX Squelch Control
No adjustment of the IntelliVox®
squelch control is necessary. Through
micro-controller processors, the ambi-
ent noise in both microphones is con-
stantly being sampled. Non-voice sig-
nals are blocked. When someone
speaks, only their microphone circuit
opens, allowing their voice on the
intercom.
For best performance, the micro-
phone must be placed within ¼ inch of
your lips, preferably against them. It is
also a good idea to keep the micro-
phone out of a direct wind path. Mov-
ing your head through a vent air stream
may cause the IntelliVox® to open
momentarily. This is normal.
For optimum microphone perform-
ance, we recommend installing a leath-
erette microphone muff. This will not
only optimize VOX performance, but
will improve the overall clarity of all
your communications.
Mode Select
The mode selector is a 2-position
switch. Regardless of configuration,
the pilot will always hear the radio.
ISO: The pilot is isolated from the
intercom and connected to the aircraft
radios. He will hear only the aircraft
radio reception and sidetone (during
radio transmissions). The copilot will
hear the intercom and music but not
the aircraft radio.
All: Both positions will hear the
aircraft radio reception and transmis-
sions, intercom, and music. However,
during any radio or intercom activity,
the music volume automatically de-
creases
.