Tourguide 2020-D | 91
The operating controls
Lock mode icon
The lock mode icon
2
appears on the display when the lock mode is activated
(see „Activating/deactivating the lock mode“ on page 131)�
CH 03
Modulation display
The level display for audio signal “AF”
4
shows the modulation of the radio
microphone�
CH 03
When the radio microphone’s audio input level is excessively high, the level
display for audio signal “AF”
4
shows full deflection for the duration of the
overmodulation� You can change modulation by changing the input sensitivity
of the radio microphone as described on page 43� (see „Adjusting the radio
microphone’s input sensitivity“ on page 128)�
MUTE display
When the radio microphone is muted, „
MUTE
“
5
appears on the display (see
„Muting the radio microphone“ on page 125)�
CH 03
Display backlighting
After pressing a button, the display remains backlit for approx� 15 seconds�
Display of the energy saving mode
When there is no audio signal for 5 minutes or when the radio microphone is
muted, it automatically switches to energy saving mode� “
CH OFF
” appears on
the display and the transmission signal is deactivated�
When an audio signal reaches the radio microphone, it automatically switches
back to normal operation and the display displays the selected channel�
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