Sennheiser 502399 Instruction Manual download pdf (Page 12)

Using the headset

Switching NoiseGard™ on/off

The NoiseGard™ ON/OFF switch  allows you to switch

the NoiseGard™ active noise compensation on or off. With

NoiseGard™ switched off, the headset can be used as a

conventional headset.

왘 Set the NoiseGard™ ON/OFF switch  to the desired

position:

ON: NoiseGard™ is switched on. The LED  lights up,

indicating the battery charge status (see

page 11) or power supply via the aircraft DC

power supply system.

OFF: NoiseGard™ is switched off. The LED  is off.

Adjusting the volume

The two slide volume controls  allow you to adjust the

volume for the left and right channel separately.

왘 Use the two volume controls  to adjust the desired

volume.

Hearing damage due to high volumes!

This headset is capable of producing high

sound pressure levels. Higher volumes or

longer durations can damage your hearing!

Set the volume to a medium level. Make sure

that you can hear critical sounds such as

warning alarms.

CAUTION!

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Sennheiser 502399 Instruction Manual Page 12