Operating instructions

AVIONICS SYSTEM
B-7
Avionics system operation
The System mode of operation is activated by pressing the blue [SYSTEM] key.
If any of the cellular or trunked radio test systems are fitted, the Cellular/Avionics selection screen
will be displayed. See Fig. B-5 Cellular/Avionics selection menu. Pressing one of the Avionics
test keys - [SELCAL], [Marker Beacon], [ILS] or
[VOR] -will cause the selected test screen to be
displayed.
If a cellular or trunked radio test system is currently selected, pressing the blue [SYSTEM] key
will not display the Cellular/Avionics selection screen. Select
NO SYSTEM on the SYSTEM
SELECTION MENU
, then press the blue [SYSTEM] key.
B3220
Fig. B-5 Cellular/Avionics selection menu
If a cellular or trunked radio test systems is not fitted, pressing the blue [SYSTEM] key will
display the
AVIONICS SYSTEM top level screen and menu. See Fig. B-6.
Selection of the required function is by pressing the appropriate soft key.
B1788
Fig. B-6 Avionics System top level screen and menu
Pressing the [Return] key on the top level screen of the function will display the
AVIONICS OPTION
screen. A different Avionics test function can then be selected.
To leave the Avionics mode, select one of the other test modes, i.e. [Tx TEST], Rx TEST] etc.