Samson Stage 412 Frequency-Agile Quad-Channel Handheld VHF Wireless System (173 to 198 MHz) - Manual (Page 9)

9 Stage 412: Quad Handheld Wireless System
1. Status Indicator - This LED displays the
operation mode:
GREEN Normal Operation
RED Mute
Flashing GREEN Low Battery
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 VH12 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.
WARNING: Do not insert the batteries
backwards; doing so can cause severe damage
to the VH12 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 VH12 PEAK indicator start to light under
high levels, then turn down until the PEAK
light stops lighting.
6. IR Lens - This window is used to capture the
infrared signal sent from the VH12 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. Plastic Screwdriver - Designed for use in
adjusting the VH12 input GAIN control (See
#5
Input GAIN Control).
VH12 Transmitter Controls and Features