Maico easyScreen - Page 77

Operation Manual easyScreen
8508935 Rev. 4
77
04/04/2019
DPOAE
Recording
Maximum test time
60 s
A/D resolution
24 bit
Artifact rejection level
30 dB SPL
Probe fit check
Frequency response of the ear canal with
click stimulus
Residual noise
RMS measurement in frequency domain,
average of frequency components around
the DP frequency (26 bins < 2500 Hz and
60 bins ≥ 2500 Hz)
Display
View of progress bars toward Pass,
feedback about Noise, recording Time
Pass criteria:
SNR criteria
Depends on protocol
Default: Minimum 6 dB
Response criteria
Depends on protocol
Default: Minimum -5 dB SPL
#Freq for pass
Depends on selected protocol
Default: 3 of 4
TEOAE
Stimulus
Stimulus type
Non-Linear click (according to IEC 60645-3)
Level range
60 dB peSPL to 83 dB peSPL
Default level
83 dB peSPL (peak to peak calibrated), auto
in-ear calibration
Level tolerance
± 3 dB
Click rate
~70 /s
Transducer
OAE Probe
Analysis bands
Center frequency range
1000 Hz to 4000 Hz
Default center
frequencies
1400, 2000, 2800, 4000 Hz
Recording
Maximum test time
60 s
Maximum noise level
55 dB SPL
Display
View of progress bars toward Pass,
feedback about Probe stability, Noise and
recording Time
Pass criteria
SNR criteria
Depends on protocol
Default: Minimum 4 dB
Response criteria
Depends on protocol
Default: Minimum -5 dB SPL
#Freq bands
Depends on protocol
Default: 3 of 4