Sandia Aerospace STX 165 Installation Manual User Manual
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3.9.2
OAT Correction
The OAT probe should not generally require any calibration. However, in the event that the com-
ponent in the OAT probe age after several years, OAT temperature can be trimmed. To trim the
OAT setting ensure that the OAT probe sensor is at a known temperature, such as 32o F
1. Rotate the Data knob to select OAT Correction page
2. Press the Enter pushbutton. The brackets will extinguish and the Offset temperature will
begin blinking
3. Rotate the Data knob until the proper OAT Temperature is shown, and then press Enter.
WARNING: Never attempt to trim the OAT setting without knowing
the exact temperature of the OAT Probe.
3.9.3
RS 232 BAUD Rate Selection
This setting sets the BAUD rate of the encoders RS 232 output. The factory default setting is 9600
BAUD.
1.
Rotate the Data knob to select the ENCODER FORMAT Page.
2.
Rotate the Select knob counterclockwise to select 1200 BAUD and clockwise to select 9600
BAUD
3.9.4
MAX REPLY RATE
TSO requires a replay rate of 500 PRF to 1200 PRF. The factory default for the replay rate is 1200
PRF and this is the recommended setting. In some instances where the STX 165 is operating on a
battery the operator may wish this setting to be lower than the maximum of 1200 in order to conserve
battery power.
1.
Rotate the Data knob to select the MAX REPLY RATE page.
2.
Press the Enter pushbutton. The brackets will extinguish and the Reply Rate will begin blinking.
3.
Rotate the Data knob counter clockwise to decrease the replay rate (a minimum of 500 PRF) and
clockwise to increase the reply rate (a maximum of 1200 PRF)
3.9.5
Exit Installer Set Up Mode
To exit the installer set up mode, Press the Mode pushbutton twice.
3.10
USER SET UP MODE
The user set mode allows the pilot to confi gure certain displays screens to his preference. The user
confi guration does not alter the way the STX 165 operates or reports in the airspace system.
1.
Apply power to the STX 165.
2.
While in the SBY (Stand-by) Mode, Press and hold the IDT pushbutton while rotating the Select
Knob counterclockwise for three seconds (Note that the select knob will go a hard stop.
3.
Press the Enter Pushbutton. This will place the STX 165 in the User Set Up Mode with the AL-
TITUDE UNIT page displayed
3.10.1 Altitude Unit
This changes the altitude display to the pilot between feet and meters. All altitude functions will be set
to the selected unit.
1.
Rotate the Select knob counter clockwise to select Meters display and clockwise to select Feet
display.
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