The operating time with batteries/rechargeable batteries is approx. 100 hours.

With NoiseGard™ switched on (see page 10), the LED  provides information on the remaining battery/recharge- able battery capacity.

LED  lights up yellow: The battery capacity is suffi- cient.

LED  lights up red:

The batteries are flat. Replace

 

the batteries.

Activating the “auto shut-off” function

The battery-saving “auto shut-off” function automatically switches the NoiseGard™ electronics off when the headset is disconnected from the audio system or when the aircraft avionics are switched off. The headset is delivered ex-works with the “auto shut-off” function deactivated. You can activate “auto shut-off” as follows:

￿Set the switch to the position ASO.

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