VXA-210 P
ILOT
O
PERATING
M
ANUAL
22
The optional Barometric Pressure Unit (
SU-1
) brings
to the
VXA-210
the unique capability of providing
readout of the current barometric pressure. This in-
formation is the used for calculation of your current
altitude, and also used for calculation of your cur-
rent density Altitude using with the temperature sen-
sor.
The Barometric Pressure unit and temperature sen-
sor requires calibration of the “offset” parameters,
so that differences in pressure can be used to calcu-
late altitude. This procedure requires that you have a
calibrated barometer, calibrated thermometer, and
that you know your current altitude. If you are at sea
level, of course, the latter parameter requires no re-
search.
B
AROMETRIC
P
RESSURE
/A
LTITUDE
M
ETERING
Thermometer Calibration
r
Press the [
F
] key, then press the
DIAL
selector
knob to activate the Menu (“SET”) mode.
r
Rotate the
DIAL
selector knob to select Menu
Item 14 “
TEMP
.”
r
Press the
DIAL
selector knob to enable adjust-
ment of this Menu item.
r
Rotate the
DIAL
selector knob to set the differ-
ence (value: in °C) between the
VXA-210
dis-
play and the calibrated thermometer.
For ex-
ample
, if the
VXA-210
display shows “
24.5 C
”
and the thermometer (wrongly) indicates “24.0
°C,” set the
TEMP
offset to “
–005
”.
r
Press the
DIAL
selector knob
to save the new
setting, and then press the
PTT
key exit to nor-
mal operation.
Notice
The optional
SU-1
Barometric Pressure Unit for the
VXA-210
measures pressure in the immediate vicinity
of the transceiver. When using the
VXA-210
equipped with the
SU-1
in a pressurized cabin of an aircraft,
of course, the
VXA-210
will not be able to measure outside temperature and pressure, nor display altitude
accurately.
Please rely on your aircraft’s altimeter for such data.
