4
12-16-08
Chapter 3
Operation
25
Preliminary check
26
Instructing the subject
27
Placing the earphones
27
Response handswitch
27
Audiogram form
28
Routine calibration check
29
Routine test administration
30
HL control (F3)
30
Range Extension pushbutton (F2)
30
Tone Type Selector (F9)
30
Typical testing session
31
Pretest Review
31
Familiarization
31
Determining the threshold (Pure Tone)
32
Testing procedure
32
Chapter 4
Routine Maintenance
33
Calibration
34
Earphone cords
34
Hum and random noise
35
Distortion and frequency shift
35
Special messages
35
CAL
35
Exx
36
Bibliography
37
