Samson EXPEDITION XP312w Owner's Manual page 11

CH88 Handheld Transmitter Callouts
1. Status Indicator - This LED displays the
operation mode:
GREEN
RED
Flashing GREEN
2. Power/Mute Switch - Press and hold
to turn the unit on or off. Press
and release to mute or unmute the
transmitter.
3. Battery Cover - Unscrew the battery
cover and slide down to open the CH88
battery compartment.
4. Battery Holder - Open the battery
holder by pressing the tab and lifting
the cover. Insert two standard AA (LR6)
batteries here, being sure to observe
the plus and minus polarity markings
shown. Although rechargeable Ni-Cad
batteries can be used, they do not
supply adequate current for more than
four hours.
WARNING: Do not insert the batteries
backwards; doing so can cause severe
damage to the CH88 and will void your
warranty.
5. Input GAIN Control - This control adjusts
the transmitter input sensitivity.
For optimal performance, using the
included screwdriver, set the input
GAIN control to where you see the all
of the CR88a AF indicators light under
high levels, then turn down the control
until the last indicator lights only
during audio peaks.
6. IR Lens - This window is used to
capture the infrared signal sent from
the CR88a during the IR SET to
channelize the transmitter. The battery
cover must be open and the IR Lens
facing towards the receiver to load the
selected channel.
7. Screwdriver - Designed for use in
adjusting the CH88 input GAIN control.
XP312w • Portable PA System
Normal Operation
Mute
Low Battery
1
2
6 5
7
3
4
11