Service Manual MA 42
D-0125965 Rev. D
7
18/05/2022
Symbol
Select
Function
Freiburger Speech Test:
Numbers
Words
MCL
UCL
Quick
Select
to select the test type.
Quick
Select
to change
Wave
Input
and
Noise
(left
↔ right channel).
Advanced
Select
to select
Wave Input
for binaural presentation.
Table 5 Selection Keys
Selection
Function
Transducer
to select the transducer for the left and the right ear (only calibrated
transducers can be selected). Select:
Phones
to select headphones (AC).
Insert
to select insert phones or high frequency headphones (AC).
Bone
to select bone conductor (BC).
NOTE
: If you select
Bone
for one ear,
the default or bone
masking transducer
is automatically selected for the other
ear. By press and hold for 2 s the opposite transducer can be
changed between
Phone
and
Insert
.
Speaker
to select loudspeaker for sound field testing.
NOTE
: For specific transducer setup see:
Section 5.11.2
Device Information
– Transducers
Tone Type
Steady
to select a steady stimulus.
Pulse
to select pulse stimulus.
Warble
to select warble stimulus.
P & W
to select combined pulse and warble stimulus.
Lock/Track
Function
to select Lock/Track functions. Select:
Unlock
to use neither the Lock nor the Track function.
Lock
to lock the presentation of the signal in both channels.
Track
to automatically increase and decrease channel 1 and 2
levels with the rotation of only one
Control Dial
.
L & T
to combine Lock and Track function to assist with binaural
testing or masking.
