Powering The Noisegard Active Noise Compensation - Sennheiser HMEC 460 Instructions For Use Manual

10

Powering the NoiseGard active noise compensation

There are three options for powering the NoiseGard active noise compensation:
1. Connection to the on-board DC power supply system (12–35 V
2. Connection to the cigarette ligther socket (12–35 V
accessory)
3. Power supply via two AA batteries (not included) inserted in the operating control
The supply voltage for the NoiseGard system is processed by the in-line electronics in the
connecting cable.
Danger of short circuit!
CAUTION!
In the unlikely case of a fault, a short circuit could occur.
Before switching NoiseGard on, ensure that the aircraft electrical circuit
which supplies the headset from the on-board DC power supply system
is protected by a 1 A fuse.
)
DC
) via an adapter cable (optional
DC