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|  MIL-N-85005A(AS)
3.5.4.5
Operator Controls and Displays - See Figure 20
3.5.4.5.1
Marker Identification - The Control shall provide
marker selection capability via two digit thumbwheel selector.
(1) Tens digit - 0 thru 6 and stop
(2) Units digit - 0 thru 9 and continuous to 0
3.5.4.5.2
Plotter Control - The Control shall provide momentary
action, green lighted push-buttons switches for selection of:
3.5.4.5.2.1
Recenter on Aircraft - ACFT
3.5.4.5.2.2
Recenter on Fly to Point - FLY TO
3.5.4.5.2.3
Scale Factor Increase - INCR
3.5.4.5.2.4
Scale Factor Decrease - DECR
3.5.4.5.2.4
Automatic Downscaling - AUTO. The key shall be
alternate action; illuminated green when the function is disengaged, and
amber when engaged.
3.5.4.5.3
Test - The Control shall provide a test key-TEST.
The key shall be alternate action; illuminated green when disengaged,
and amber when engaged. Activation of the test function shall cause
test of all lamps on the unit, and generation of the Test discrete to
the NC.
3.5.4.5.4 On-Top - The Control shall provide the following
pushbutton keys to designate the type of "ON TOP" correction:
(1) Geographic - GEO
(2) Aircraft - ACFT
(3) Marker - MKR
Each key shall be a momentary actuation type with electronic memory
interlock. The key's inactive color shall be illuminated green. When
operated, the key changes to amber and remains amber until one of the
following keys is operated:
(1) ENTER
(2) INSR MKR
(3) GEO or ACFT or MKR
If ENTER is depressed, all keys in the row revert to green. If any
of the other keys, in the row, are depressed, the last key depressed
will remain amber. All other keys will be green.
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