V A L A V I O N I C S , L I M I T E D
C O M 7 6 O T S O V H F T R A N S C E I V E R
INSTALLATION/OWNER’S MANUAL PAGE
20
VPN 701002
REVISION 6-AUG 1999
PARAGRAPH
2.3.4
COM 760 TSO Installation
1.
Looking at the bottom of the unit, make certain the front lobe of the hold down device is in a vertical position.
2.
Slide the unit in the mounting tray until the front lobe touches the mounting tray.
3.
Insert a 7/64” Allen wrench through the hole in the font panel to engage the locking screw. Turn clockwise until the
rear lobe engages the mounting tray. This will start pulling the unit in. Continue turning until the rear of the faceplate
is flush with the mounting tray and first resistance is met
DO NOT OVERTIGHTEN!
4.
To remove, turn the locking screw counter clockwise, using a 7/64” allen wrench, until the unit disengages from the
mounting tray. Pull the unit out of the tray by pulling on the recessed notches (one located on each side of the rear of
the faceplate).
5.
After installation of unit in the mounting tray, install locking screw hole plug. (Refer to Figure 1-9).
2.3.4.1
Installation Adjustments
Microphone Gain (MIC GAIN – CW in increase), Sidetone (SIDETONE – CCW to increase) have been preset at the factory to
optimum levels prior to shipment. Should it be necessary to vary these levels, locate the access holes marked appropriately on the
bottom or top of the unit. Use a small flat narrow insulated screwdriver and turn the adjusting potentiometer as required to
achieve the desired level. Be careful not to force the potentiometer past the normal operating stops. If necessary, call the factory
for details and assistance. (Microphone Gain and Sidetone levels were set at the factory with an Electret microphone).
NOTE: SIDETONE is the same as Intercom volume for those installations utilizing the intercom FUNCTION OF
THE COM 76O TSO VHF Communications Transceiver. See Intercom Diagrams Figures 1-2 through 1-4.
