Maico MA 42, Руководство по эксплуатации

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Operating Instructions MA 42
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Appendix A: Checklist for subjective audiometer testing
- Clean the ear and head cushion!
- Untangle all lines when necessary!
- Are the headphone cushions in good condition?
If not

replace
- Are plugs and leads in good condition/undamaged?
- Are all controls working properly?
- Is the Patient Response Key working properly (if available)?
- Check batteries and renew if necessary!
Instrument:........................................
Manufacturer:…................................
Serial No.:.........................................
Examiner:........................................
Test Signal Quality
All the test frequencies in the below table indicate typical hearing level and can be changed when necessary:
Masking: “B” for Buzz tone, “G” for Noise, “V” for signal distortion, “S” for switching masking noise.
Right Ear Level Left Ear
kHz 0,25 0,5 1 2 3 4 6 8 0,25 0,5 1 2 3 4 6 8 kHz
AC
30dB
HL
50dB
HL
70dB
HL
BC
30dB
HL
50dB
HL
* When noise “B”, “G”, “V” or “S” is blocked, inform the service center!
* When the test tone is heard at the masking ear, contact the service center!
Air Conduction Audiogram
Right Ear Level Left Ear
kHz 0,25 0,5 1 2 3 4 6 8 0,25 0,5 1 2 3 4 6 8 kHz
Should
dB
HL
*
Left
Earpiec
e
Is
dB
HL
Left
Earpiec
e
Right
Earpiec
e** Is
dB
HL
Right
Earpiec
e **
* Should is the last measurement of the patient
**For inverted measurement please reattach the headphone
If the frequency difference between „Should“ and „Is“ for one ear averages more than 10 dB, contact the SERVICE CENTER!
Bone Conduction Audiogram
Right Ear Level Left Ear
kHz 0,25 0,5 1 2 3 4 6 8 0,25 0,5 1 2 3 4 6 8 kHz
Should
dB
HL
*
Is
dB
HL
If the frequency difference between „Should“ and „Is“ for one ear averages more than 10 dB, contact the SERVICE CENTER!
Tested.............................................................................................
Date:...............................................................................................