SELECT
The SELECT knob is the large outer knob of the stacked pair on the lower
right of the STX 165. This is a momentary knob that can be turned clockwise
or counter clockwise and will move the ‘cursor’ one postion. When released,
it will return to the nutral position. The SELECT knob is used to move the
cursor over the code digits so that a different code can be entered by the pilot.
DATA
The DATA knob is the smaller, outer knob of the stacked pari in the lower
right hnad corner of the STX 165. It can be turned either clockwise or counter
clockwise to enter data.
ENTER
The ENTER puchbutton is the smaller, outer knob in the lower right courner
of the STX 165. Pressing the ENTER pushbutton stores pilot entered data in
the STX 165. It is repersented by the international enter symbol
VFR
The VFR pushbutton is used to toggle between the units programmed VFR
code and the last pilot entered code.
IDT
The IDT pushbutton is pressed to squawk Ident when requested by ATC.
When IDT is pressed the unit will stay in the IDENT mode for 22 seconds
and the IDENT annunciator will be illuminated.
POWER
The STX 165 is designed to come on automatically when the avionics master
switches is turned on. The STX 165 can be turned OFF by pressing and holding
the power/mode pushbutton for three seconds. If the pushbutton is disengaged
prior to the three second time out, the unit will remain in the ON mode. The
STX 165 always comes on the last active code.
MODE
Turing the MODE control selects one of three MODES of operation,
Standby
(SBY) in which all functions are operational except that the unit is not transmit-
ting reply.
ON
, the STX 165 is replying to interrogations but not reporting alti-
tude (Mode A).
ALT
, the STX 1656 is replying to radar interrogation and report-
ing altitude (Mode C). The STX 165 always turns on in the Standby mode. The
STX 165’s Mode is shown in the upper left quadrant of the OLED display
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