Sennheiser 500643 User Manual
Page 12
11
Switching NoiseGard on and off
The following prerequisites must be fulfilled for active
noise compensation, NoiseGard 2.0:
y a battery or rechargeable battery is inserted and
y the
normal
/
bypass
·
sliding switch is in the
“
normal
“ position (see page 10).
To switch on NoiseGard 2.0:
̈
Press the
ON
/
OFF
button
´
approx. 1 second.
The LED
º
shines red.
To switch off NoiseGard 2.0:
̈
Press the
ON
/
OFF
button
´
approx. 1 second.
The LED
º
goes out. If NoiseGard is switched off,
you can use the PXC 450 like typical headphones to
listen to music.
Note:
– Compared to the other buttons of the controller,
the
ON
/
OFF
button
´
is set somewhat lower to
avoid accidental switching off.
– If the batteries of the device are empty, the
NoiseGard automatically switches off. However,
the audio signal continues to be transmitted if
you slide the
normal
/
bypass
sliding switch
·
into “
bypass
“ position (see page 10).
º
´
PXC450_517600_0806_SP6.book Seite 11 Donnerstag, 13. September 2007 10:26 10
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