Interacoustics Sera Instructions For Use Manual page 77

Recording
Display
Accuracy of
Measurement
DPOAE
Stimulus
Recording
Display
Accuracy of
Measurement:
The Sera with DPOAE uses an improved method of stimuli level control, which more accurately delivers
TM
the specified intensity in the full range of ear canals, from infants to adults. The applicability of the IEC
60645-6 standard is currently limited to adult ears. Therefore, in order to better serve a market with a product
that provides more accurate stimulus levels to a wide range of ear canal volumes (specifically infants), we
have elected to utilize a more comprehensive calibration procedure for DPOAEs that is outside the scope of
IEC 60645-6 for some protocols.
All protocols that include IEC in the name use the specified IEC calibration method.
D-0113323-F – 2020/11
Sera™ - Instructions for Use - US
(Calibrated to
Standards)
Level:
Bandwidth:
Analysis time:
A/D resolution:
Artifact reject system:
Algorithmic Sensitivity
(default protocol):
Frequency range:
Nominal frequency:
f2/f1 ratio:
Level:
Transducer:
Analysis time:
A/D Resolution:
Artifact (noise)
rejection system:
Residual noise:
Test Pressure:
Algorithmic Sensitivity
(default protocol):
IP30 EarCup
OWA Probe
SnapPROBE
TM
30, 35, 40, 45 dB nHL
22.05 kHz
3 minutes
24 bit
Rejection level (Peak, Min RMS, Max RMS) & Clipping
(Saturation)
Transducer, test result bars, result symbols
(pass/refer/incomplete), test time, artifact, electrode
impedances.
99.96 %
Please refer to the Sera
for further information about available test
protocols, test protocol settings and sensitivity and
specificity.
1500 to 6000 Hz
f2
1.22
50 – 65 dB SPL
SnapPROBE auto detection, auto calibrated
TM
Replaceable probe tip
OWA Probe auto detection, auto calibrated
Replaceable probe tip
60 seconds
24 bit, 5.38 Hz resolution
30 dB SPL
An RMS average measurement in the DP-bin frequency
area (26 bins at frequencies < 2500 Hz & 60 bins ≥
2500 Hz).
Ambient
Transducer, test result bars, result symbols
(pass/refer/incomplete), probe stability, test time,
artifact.
≥ 99.6 %
Please refer to the Sera
for further information about available test
protocols, test protocol settings and sensitivity and
specificity.
Additional Information
TM
Additional Information
TM
Page 71