T X 3 1 2 0 S
I N S T R U C T I O N M A N UA L
PA G E 9
ON/OFF SWITCH
Press the
Volume
control to turn the radio on. Press
and hold the
Volume
control to turn the radio off.
VOLUME
Rotate the
Volume
control left or right to adjust
the volume. During volume adjustment the
Volume level is displayed on the LCD as ‘VOL01’
(minimum) to ‘VOL31’ (maximum).
MINIMUM VOLUME SETTING (VMIN)
By default, when the
Volume
control is set to
minimum (VOL01) there is still a sufficient level
of residual audio from an incoming signal to be
heard in a quiet cabin environment. If required, the
minimum volume level can be adjusted through the
‘VMIN’ option in the Menu.
To adjust the minimum volume level
1. Press and hold the
Channel
control to enter
the menu. The display will show the current
Squelch level setting.
2. Rotate the
Channel
control until ‘VMINx’ is
displayed (where ‘x’ is a value from 1 – 9),
then press the
Channel
control to select it. The
VMIN value will be flashing.
3. Rotate the
Channel
control to make the
desired selection from 1 – 9. For the lowest
minimum volume level select 1.
When finished briefly press the
Channel
Control
to return to the menu or press and hold the
Channel
Control to exit the menu.
RECEIVE AUDIO MUTE
There may be times when it is desirable to
temporarily override the minimum volume setting
and completely mute the receiver audio.
To mute the receiver audio, briefly press the
Volume
control. ‘MUTE’ will flash on the display
and the receiver audio will be muted. During this
time you may see the icon appear but no sound
will be heard in the speaker.
To unmute the receiver audio, briefly press (or
rotate) the
Volume
control again. ‘MUTE’ will be
removed from the display and the receiver audio
will be restored to its previous volume setting.
SELECTING CHANNELS
To select the required channel, rotate the
Channel
control (or press the or keys on
the microphone). Rotate the
Channel
control
clockwise (or press the key ) to select a higher
channel or counter clockwise (or press the key)
to select lower channels. The selected channel is
displayed on the LCD.