Bosch Telex Ascend, Руководство пользователя

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Ascend Operation and Maintenance 23
Bosch Security Systems, Inc. Technical Manual F.01U.196.221 Rev. 08
Turn the ANR On/Off (ANR Capable Headset Only)
ANR is used to reduce unwanted noise in the headset from the surrounding environment. The ANR switch is located on the
left ear shell, as seen in Figure 21.
To turn ANR on , do the following:
> On the left ear cup, move the ANR switch to the up position (indicated by 1 on the label).
To turn ANR off , do the following:
1.
On the left ear cup, move the ANR switch to the down position (indicated by 0 on the label).
2.
Remove battery to conserve battery power when not in use.
FIGURE 21.
ANR Switch