Examples of using Reference altitude in English and their translations into French
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Colloquial
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Official
Change the reference altitude value to an accurate altitude reading.
The aerodrome reference altitude is 893 feet asl.
Refer: Set the reference altitude or sea level pressure.
Before drilling, Laser beam option to get an absolute reference altitude(Z);
Rotate the crown to adjust the indicated altitude reading to the desired reference altitude value.
Use A(+) or C(-) to change the current reference altitude value in 1-meter(5-foot) increments.
Most important to remember is to ALWAYS set the known reference altitude into the Wristop Computer.
Pressing A and C at the same time returns to OFF(no reference altitude value), so the watch performs air pressure to altitude conversions based on preset data only.
Altitude Differential Reference location, so±0 m is indicated.
When the GPS is on, find the altitude reference from the position display in the Function menu.
According to the recommendation of the AIP, an approach to the Blanc-Sablon airport with a reference point altitude of 121 feet asl would have brought the crew to overfly the airport at an altitude of 1,121 feet before they joined the downwind leg.
In this example, the reference altitude is set at 1000 m.
The reference altitude is set at 3280 feet.
You also can specify a reference altitude value, if you want.
See“Using Reference Altitude Values” page E-56.
You can set the reference altitude value within the range of -3,000.
The airport's reference altitude is 108 feet asl.
If you specify a reference altitude, the second hand of the watch will indicate the difference between the current altitude and the reference altitude.
See“To specify a reference altitude value”(page E-57) and“Altimeter Precautions”(page E-68) for.
Any change in the reference altitude during the altitude difference measurement will effect the measured altitude. .