Using the S1 DIGITAL

Activating the “auto shut-off” function

The “auto shut-off” function automatically switches the headset off when it is disconnected from the intercom or when the aircraft avionics are switched off. With the “auto shut-off” function activated, the operating time is increased. The headset is delivered ex-works with the function deactivated.

1Open the cover of the battery compartment on the control unit.

2Set the Auto Shut-Offswitch to the position ON.

3Close the cover of the battery compartment.

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Microphone BIAS – microphone supply for mobile phones

When used in the cockpit, the headset is powered via the intercom. If you want to use the headset for making phone calls outside the cockpit, you have to deacti- vate the “auto shut-off” function.

￿Set the Auto-Shut-Offswitch to the position OFF.Switching the 3-step treble boost on/off

The switches for the 3-step treble boost allow you to individually adjust the speech intelligibility for the left and right channel separately. For this, you can boost the frequency response in the approx. 1 kHz to 6 kHz region in three steps.

20 S1 DIGITAL