Flytec 4020 * - Manual (Page 10)

Operating Instructions FLYTEC 4020 9
Altimeter 1 option mode
In option mode, you can set the unit for ALT 1 (meters or feet) at the first level and, at the second
level, you can set the unit for the QNH (hPa or inHg). The indicator for the relevant unit set flas-
hes in the display.
The pressure sensor can be corrected at the third level (± 50 hPa).
If you find that the QNH value displayed at a known altitude deviates seriously from the QNH
value of a weather station in your area, you can correct this deviation by entering the deviati-
on (with a different prefix). I.e. if the QNH displayed by your instrument is 20 hPa too high, enter
-20 to correct this deviation.
This deviation is caused by the aging of the pressure sensor and stabilizes after 2 - 3 years.
N. B.: Incorrect manipulation of the correction value of the pressure sensor will result in false
altitude readings! Never alter the basic settings of the altimeter unless you have good reason
to do so (in your own interest)!
In option mode, the indicators OPTION and ALT
1 appear and the relevant number of the modu-
le is shown at the top of the display. The unit to
be adjusted will flash.
Altimeter 2 (ALT 2)
Altimeter 2 can either be used as an absolute
altimeter or as a relative altimeter.
When used as an absolute altimeter, it functions
in precisely the same way as altimeter 1. Alti-
meter 2 can now, for example, display the alti-
tude in feet and altimeter 1 the altitude in
meters.
The relative altimeter displays the current alti-
tude with reference to a point. This reference
point can be set at zero in run mode at any time
by using the key or set at any altitude in
setting mode. The relative altimeter can thus be
used to measure the higher altitude of the take-
off area. Pressing the key at the take-off
area will zero ALT 2 for this purpose.
SET-MODE
ALT 2/QNH
OPTION-MODE
ALT2 Unit
m - ft
MODE
-relative altitude
-absolute altitude
ALT 2
ALT2
ALT2 4 Sec.
OPTION
OPTION
➀
➁
ALT 1
ALT 2
CHRONO
ALT 1
ALT 2
CHRONO