Airspeed Adjustment - Auto Zero - Kanardia INDU Manual

Altimeter — Manual
2. Turn the knob on Indu Altimeter to indicate 1020 hPa (30.12 inHg) and
wait for about 3 seconds for a short cyan line to appear on the top of
LCD display.
3. Quickly turn the knob to indicate 999 hPa (29.50 inHg). A moment
later a longer cyan line appears on the top. You must reach 999 hPa
before cyan line disappears.
4. Turn the knob to select 1013 hPa (29.91 inHg) and wait for a moment.
Again, you have to reach this value before cyan line disappears.
5. Now a full cyan line appears and the LCD display is slightly altered. It
shows the offset and the altitude. Turn the knob until Indu Altimeter
shows the same altitude as the reference altimeter. Wait for cyan line
to disappear.
This completes the sensor offset procedure.
3.2

Airspeed Adjustment - Auto Zero

1020 1030
In special situations, when altimeter and airspeed indicator are connected
with the CAN bus, you can use altimeter to issue zero calibration command
on the airspeed indicator. Normaly, this is not needed. You should issue this
command only, if airspeed indicator shows significant offset during pitostatic
test.
When airspeed indicator receives such command, it changes offset of the in-
ternal pressure sensor so that it shows true zero afterwards.
Important: Please make sure that aeroplane is either inside hangar or there
is absolutely no wind and that pitot tube is not covered. Failing to do so may
result in wrong offset and it may worsen airspeed precision.
The procedure is as follows:
1. Turn QNH until it shows 1020 hPa (30.12 inHg) and wait for about
three seconds for a short cyan line to appear on top of LCD display.
2. Quickly turn the knob to indicate 1030 hPa (30.42 inHg). A moment
later a longer cyan line appears.
3. Turn the knob to 1013 hPa (29.91 inHg) to complete the procedure.
Cyan line disappears and no other visual feedback is shown on either
indicator.
3.2 Airspeed Adjustment - Auto Zero
1013 for hPa or 30.12
15
30.42 29.91 for inHg.
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