Operation Manual MA 25/MA 25e
MA 27/MA 27e
8104818 Rev. 5
19
29/06/2021
5.2 Switching the Device On and Off
NOTE:
All the cables and accessories have to be connected before the instrument is
switched on. Power on is only possible if headphones are completely plugged-in!
NOTE:
The warm-up time for the device including boot up process takes about
1 minute. For further information on use after transport and storage see Section 6.1.
To turn on the audiometer press the
Tone Switch
button (Figure 10/Figure 11, 1).
To power off the audiometer press and hold the
Hearing Level dB
dial (2) and
Frequency Hz
dial (3) for a few seconds or unplug the device.
5.3 Device Layout
Figure 10 and Figure 11 show the device layout. Table 6 gives further explanation.
Figure 10
Figure 11
Table 6 Explanation of Device Layout
#
Name(s) /
Function (s)
Description
1
Tone Switch
Presenter mode:
Press to present the signal. A tone
presentation signal (i.e.
) will display on the screen.
Interrupter mode
: Press to stop the signal being
presented.
2
Hearing Level dB
Dial to select hearing level of presented tone
between -10 dB HL and 100 dB HL.
3
Frequency Hz
Dial to select frequency of presented tone.
4
Function Keys F1-F4
See section 5.4 for more details.
1
2
3
4
MA 27/MA27e
1
2
3
4
MA 25/MA25e
Содержание MA 25
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