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Using the headset
HMEC 26-2 | 13
Powering NoiseGard™ via two (rechargeable) batteries
̈ Insert two 1.5 V AA alkaline batteries (IEC LR 6) or two
1.2
V AA rechargeable batteries (IEC LR 6). Observe
correct polarity when inserting the batteries.
The operating time with batteries/rechargeable batteries
is approx. 60
hours. With NoiseGard™ switched on (see
page
11), the LED 2 provides information on the
remaining battery/rechargeable battery capacity:
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 function deactivated. You can activate “auto shut-
off” as follows:
LED 2
Meaning
lights up yellow The battery capacity is sufficient.
lights up red The batteries are flat. Replace the batteries.