Operating Instructions MA 25 / MA 25e
operating instructions_8012238-4_MA25_E_13a
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8012238-4 10/13
10 Technical data
Standards
Audiometer :
EN 60645-1/ANSI S3.6, Type 4
Safety :
EN 60601-1
EMC :
EN 60601-1-2
Frequencies and Maximum Intensities:
Maximum
Intensities
Frequency
125 Hz 250Hz 500Hz 750Hz 1KHz 1.5KHz 2KHz
3KHz
4KHz
6KHz
8KHz
DD45
70
90
100
100
100
100
100
100
100
100
90
DD65
65
75
90
95
95
95
95
95
95
90
85
Inputs:
Patient response switch, USB-Power-Supply
Outputs:
Left AC, Right AC
Attenuator:
-10 to 100 dB HL in 5 dB steps.
Tone Presentation:
Manual or reverse (chosen in Setup Menu);
Multiple pulses 250 or 500 msec (chosen in Setup
Menu); On/Off; pure tone or warble tone
Talk Forward (MA 25e):
Built in talk forward microphone
0-100 dB
SPL
adjustable.
Auto Threshold (MA 25e): Patient controlled Hughson Westlake
procedure according to ISO 8253-1.
Store Function (MA 25e):
Soft key (F2-key) store button and internal
memory for AC L/R. Stored measurements can be
viewed on the build in display.
Modulation:
/- 5% 5 Hz.
Summary of Contents for MA 25e
Page 1: ...Operating Instructions MA 25 MA 25e...
Page 2: ......
