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VAL AVIONICS LTD

INS 429 INTEGRATED NAVIGATION SYSTEM

INSTALLATION AND OPERATOR’S MANUAL

3.1.3 User Controls

Refer to Figure 1: Unit Controls. The user controls consist of two sets of concentric rotary knobs. The set

on the left control functions on the left side of the display and the set on the right control the functions on

the right side of the display. Both sets of knobs contain three parts, the inner knob (the small one) the outer

knob (the large one) and a momentary push button (the end of the small knob).

3.1.3.1 Turning the unit on/off

To turn the unit on, momentarily press the left hand inner knob. The unit will go through a short

initialization routine at start up and then begin operation at the same settings that were loaded at the last

power down. To turn the unit off, press and hold the left inner knob for three seconds.

3.1.3.2 Setting Active and Standby Frequency

The knob functions of the left hand set are as follow; the inner knob will change the frequency by KHz or

the numbers to the right of the decimal point (108.15) in 50kHz increments. The outer knob will change the

frequency by MHz or the numbers to the left of the decimal point (108.15) in 1 MHz increments. Only the

frequency in the standby position will change. The standby frequency is displayed at the bottom on the left

side of the display and is identified by the letter “S” to the left of the frequency (S108.15). To load the

standby frequency in to the active position, momentarily press on the inner knob. This will swap the

standby frequency with the active frequency. The active frequency is identified by the letter “A” at the left

of the frequency display (A108.15). If the external inputs are active (configured in the setup pages see

section 3.2.1.3 on pg. 13) “EXT” will appear in the standby frequency position while rotating the outer

knob. “EXT” is located between “117.XX” and “108.XX”.

”EXT” stands for external as in external function. “EXT” can be loaded into the active display position by

momentarily pressing on the inner knob. When “EXT” is loaded into the action position the INS 429 will

display CDI and VDI information from an external receiver source such as an external GPS or an external

NAV.

3.1.3.3 Setting a Bearing

The knob functions on the right side of the unit are as follow; the inner knob changes the bearing display by

1° increments. The outer knob changes the bearing display by 10° increments.

3.1.3.4 To/From Swap and Auto Radial Centering

When “VOR” is displayed in the mode display, momentarily pressing the inner right knob will change the

displayed bearing to the 180° reciprocal. Pressing and holding the inner knob for three seconds will change

the bearing to the centered “FROM” radial of the received VOR station.

Original Issue Page 11 of 21

August 2008

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VAL Avionics INS 422 Betreibershandbuch Seite 11