Insert Battery; Altitude Mode; Absolute Altitude - AEL 101 Instruction Manual

1.4 Insert battery

When the unit is powered up, all LCD segments will light
up for about  seconds
Caution: Do not reverse polarity of the batteries

2. Altitude Mode

2.1 Absolute altitude

As the absolute altitude is calculated from the air pres-
sure the change of air pressure would affect the altitude
reading. To achieve a more accurate reading, it needs to
be calibrated as pressure may change gradually.
Important note: In order to set the correct absolute
altitude reading, the altitude must be known. That
information can be found by utilizing a topographical
map identifying the current location with the associated
altitude marked. The user can then proceed and follow
the instructions to calibrate the absolute altitude.
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