trig TC90, Operating Manual

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EN
5
Brightness Sets the LCD backlight brightness
Dual Control Operation
If two control heads are installed for a dual control setup then changes made
to one controller will be automatically updated on the second controller.
There is a small time lag between operating one controller and updating the
display on the second controller. This is purely a delay in the display and there
is no delay in the tuning or operation of the TY91/TY92 radio.
The exception is that the radio volum
e knob works on a “loudest wins” basis .
The radio volume will always correspond to the control head that has the
volume knob set to the highest position. This means that only one of the
controllers needs to be turned up to operate the radio normally, for example
when flying a tandem aircraft solo.
Dual Control Individual Functions
The following functions are local to the individual control head and will not
automatically update or transfer between two controllers:
Frequency Step Size
Changing the frequency step size by pressing the
PUSH/STEP button on one controller does not
affect the other controller.
Brightness The brightness is separately adjusted on each
controller.
Memory The frequencies stored in the memory are local to
each controller. The memory data is not
transferred between controllers, although a
frequency selected from the memory will appear
on the screen on the other controller.
General Low Temperature Operation
The TY91/TY92 is certified to operate correctly down to -20°C, but at low
temperatures the controller display may be impaired. On a cold day you may
need to wait for the cockpit to warm up to ensure normal operation.
Warning Messages
If the VHF radio detects a problem, the screen will indicate WARNING and a
brief statement of the problem. Depending on the nature of the problem,
your VHF radio may not be working properly. Note the message on the screen
and pass that information to your avionics maintenance organisation. Press
the flip-flop button to clear the message.