Operation Manual MA 33
8100092 Rev. 9
59
19/08/2019
The MA 33 must be calibrated to the particular speech test material in use to ensure valid
test levels. That means every time you change the CD you must recalibrate the
instrument. Click on
Calibration
next to the
CD-ROM
button and the calibration panel
opens (Figure 82).
Figure 82
On every CD with speech test material should be a calibration track with a calibration noise.
Choose calibration track, select the channel and click on play.
Change the Amplitude with the left and right arrow buttons until the yellow and one green
light of the VU-meter lights up (Figure 83). If one or more red lights are on, reduce the
amplitude. Store the calibration by clicking
OK
.
Figure 83
After preparing the test person start the speech test and proceed as described above.
Figure 84
You can choose any track directly by clicking on Track underneath the
CD-ROM list (Figure 84). The length of the track is displayed next to the number.
Next tracks will be played automatically.
The chosen track will be repeated automatically.
5.6.3 Edit Mode: Speech Screen
5.6.3.1 General
To enter
Edit Mode
click on
Settings
/
View
/
Edit
and save the changes. The
Edit
button
is displayed in the upper part of the speech screen (Figure 85). Click on the button to
activate. Once in
Edit Mode
, the functions described below may be performed.
Figure 85
