Operating Instructions MA 41
8100456_OI_MA41_EN_15a
43
8100456-8 04/15
Insert earphones Ear 3A:
- 10 dB
HL
... 120 dB
HL
Sound field speaker:
- 10 dB
HL
... 90 dB
HL
, for CD 220
Test Signal:
Pure tone, Pulse tone, Warble tone
Masking Signals:
Narrow Band Noise: 5/12 Octave
filter with the same center frequency
resolution as pure tone
Speech Noise: 125 to 6,000 Hz
falling 12 dB/octave above 1 kHz
(+/-5 dB)
Speech Signals:
External CD-Player, Microphone,
Wave file from SD memory card
Modulation:
Pulse Tone:
0.25/0.5 s on time
Warble Tone:
5% sinus frequency modulation,
repetition rate 5 Hz
Tests:
Tone:
HL, UCL
Speech:
SRT, WRS, UCL
Patient Response:
Handheld response switch
Monitor:
Build in monitor speaker, headset
Communication:
Talk forward and talk back
Data Connection:
USB, LAN Ethernet
