PAGE 10 I NSTRUCTION MANUAL TX3550S
face and speak at a normal voice level. The microphone is
quite sensitive so it is not necessary to raise your voice or
shout. Release the PTT when you have finished talking. The
icon will disappear.
IMPORTANT: Always listen to ensure the channel is free
before transmitting.
TIME-OUT TIMER
The radio has a built-in time-out timer that automatically
limits transmissions to a maximum of 3 minutes of
continuous operation. This feature is required by the ACMA to
prevent accidental blocking of the frequency should your PTT
become jammed or be otherwise pressed accidentally. The
time-out period can be changed by your dealer.
When the time-out timer activates, the radio will beep for 5
seconds then the
symbol will flash continuously. Normal
operation will be restored once the PTT is released.
BACKLIGHTING
The Liquid Crystal Display and keys are backlit for easier
viewing at night. The backlight remains on whenever the
radio is switched on.
Adjusting the Backlighting
The backlight brightness and colour can be adjusted for
personal preference. There are three backlight settings
available.
BKLGT (Brightness setting): Provides a continuously
variable brightness adjustment from very dim to full
brightness.
COLOR (Colour setting): Provides a continuously variable
adjustment through the full colour spectrum.
White (Whiteness setting): Controls the colour
saturation of the selected colour from deep colour to white
(no colour).
To adjust the backlighting;
1. Hold the LEVEL key to select the Backlight mode. ‘BKLGT’
is displayed.
2. Press or key to adjust the brightness.
3. Briefly press the LEVEL key to select the Colour setting
mode. ‘COLOR’ is displayed.
4. Press
or key to adjust the colour.
5. Briefly press the LEVEL key to select the Whiteness setting
mode. ‘WHITE’ is displayed.
6. Press the
or key to adjust the colour saturation. For
the deepest colour range, reduce the WHITE setting.
To exit, press and hold the LEVEL key.
Auto-colour Mode
The radio has an automatic colour-change option that, when
activated, will cause the display colour to automatically cycle
through the available colour spectrum. The colour-change
option can be enabled temporarily as an aid to choosing
a display colour or can be set to cycle continuously as the
preferred display colour setting.
To enable the auto-colour option,
7. Hold the LEVEL key to select the Backlight mode. ‘BKLGT’
is displayed.
8. Briefly press the LEVEL key to select the Colour setting
mode. ‘COLOR’ is displayed.
9. While in the colour setting mode, briefly press the MENU
key to enable or disable the auto-colour option. When
enabled, the display lighting will continuously cycle
through the available colour spectrum. When disabled the
display will hold the last selected colour.
To exit, press and hold the LEVEL key. If auto-colour is still
enabled, the display lighting will continue to cycle through
the colour spectrum until disabled using the steps above.
NOTE: The back-light setting function will automatically
time out after 6 seconds if no further adjustments have
been made.
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