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|  MIL-N-81207A(AS)
to its thirteenth position respectively.
There shall be no readout in the most
counterclockwise position. The digits
selected by the switches shall be
displayed in such a manner as to optimize
their readability from either side.
MODE - A toggle switch to select NORMAL or
(2)
INVERSE.
X/Y - A toggle switch to select either
(3)
mode X or mode Y channelization.
VOL - A potentiometer assembly which shall
(4)
provide continuous variation of the audio
output level, approximately linearly in dB
per degree of control rotation, over a
range of attenuation required to meet the
system output requirements. A clockwise
rotation shall effect an increase in
output level.
Function - A five position rotary switch
(5)
that when
OFF - Removes primary power from the
(a)
equipment.
REC- Operates the equipment in a
(b)
receive only mode to measure bearing
and receive station identity.
T/R - Transmits interrogations and
(c)
receive replies to measure bearing,
slant range, and receive station
identity.
A/A - Transmits and receives
(d)
interrogations or replies to measure
slant range to or from a
complementary aircraft and measures
relative bearing to a properly
equipped cooperating aircraft.
BCN- Operates as an airborne beacon
(e)
to cooperating aircraft.
BIT - A pushbutton switch to initiate self
(6)
test.
Electrical Connections - Electrical connections
3.5.3.7
to the Control shall be as shown in Figure 3.
39.
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