Leica MX400 Operating Instructions Manual page 107

Operator's Manual
AUX2 - Speed Graph
The graph scales automatically to the speed you are at. You can
zoom out to the last 56 minutes or in to the last 3.5 minutes. It is a
handy tool if you are trying to maintain a certain speed.
AUX3 - Fuel Information
When a calibrated fuel log is connected, you can enter the tank's
content and refueling amounts and the receiver will keep track of
the consumed fuel. It will also calculate the maximum range based
on real life conditions. Refer to the Installation & Service Manual
for setup instructions for pins 14, 18, and 21. This function is
interactive with the CFG1 Fuel screen. The Fuel Supply window
will continue counting down through 0 (zero) to negative values
when the In Tank and Accumulated Usage volume values have been
exceeded by the Fuel Consumption.
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Auxiliary
Version 3.3