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MODE 1-4/ Pilot’s mode select 1-4 and DCLT declutter switch.
FAIL  Indicates a system failure.
ON  Indicates system ON.
ADJ/ON/OFF  Selects adjust mode, enabling the INC/DEC switch to adjust altitude, pitch, or roll. Turns power on or off to HUD system.
P-PGM/OP/CP- Selects pilot program mode,
PGM  operational mode, or copilot program mode. Used with the PGM NXT/SEL switch.
BIT/ACK  Selects built-in-test or used to acknowledge a displayed fault, completion of an adjustment, or completion of a programming sequence.
4-6 Change 3
CONTROL/  FUNCTION 
INDICATOR 
ALT/P/R  DEC/  Active  when  adjust  mode  is 
INC  selected  to  decrease/increase 
altitude/pitch roll. When adjusting 
altitude  (MSL)  a  momentary 
movement of the INC/DEC switch 
will  change  data  in  5  feet 
increments.  When  the  INC/DEC 
switch is held for one second data 
will  change  10  foot  increments. 
Pitch and roll change in increments 
of one degree. 

Change 3 4-6.1/(4-6.2 Blank)

L / R EYE SELECT

DISPLAY UNIT SU.180/AVS.7
CONVERTER CONTROL C.12293 / AVS.7

AA9221A
SA

Figure 4-2. Heads Up Display AN/AVS-7
CONTROL/  FUNCTION 
INDICATOR 
PGM NXT/SEL  Active  when  program  mode  is 
selected. Allows operator  to  pre-
program  the  four  normal  modes 
and four declutter modes. Operator 
can  select  a  .ashing symbol for 
display  and/or  go to the  next 
symbol.  Once  complete, operator 
toggles the ACK switch  to  save 
programmed display. 

b. Pilot’s collective controls are described as follows:
CONTROL  FUNCTION
BRT/DIM  Allows pilot’s to control brightness of their respective displays.
MODE/DCLT  Allows pilot’s to select respective display modes or declutter modes.
c. Attach optic unit to either ANVIS monocular hous-ing. Set EYE SELECT switch on PSCU to L or R.
4.4.3 Modes of Operation. There are two program-ming modes and one operational mode for the HUD system selected by the programming switch on the CCU. The ad-just mode is a submode under the operational mode.
1.
Pilot programming switch -Set to P-PGM.

2.
Copilot programming switch -Set to CP-PGM.

3.
Operation (.ight mode) switch  -Set to OP. (Adjust -ADJ/ON/OFF switch to ADJ).

 

4.4.4 Display Modes. Symbology display modes are programmable by the pilots via the converter control lo-cated on the lower console. Modes are de.ned by selecting from a master symbology menu (Figure 4-3 and Table 4-1). Up to eight display modes, four normal and four declutter, can by programmed for each user and can be selected for display using the display mode selection switch on the pi-lot’s collective control or on the CCU. The default declutter mode has a minimum symbology display of:
.
Airspeed -No. 25.

.
Altitude (MSL) -No. 7.

.
Attitude (pitch and roll) -No. 1, 5, 6, 20, 26.

.
Engine Torque(s) -No. 22, 23.

Table 4-1. Master Mode Symbology Display (HUD)
No.  Symbol 
1  Angle of Pitch Scale 
2  Bearing  to  Waypoint  -
Pointer 
3  Compass Reference Scale 
4  Aircraft  Heading  Fix 
Index 
5  Angle of Roll -Pointer 
6  Angle of Roll -Scale 
　
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