Madsen AccuScreen OAE & ABR Screener User Manual
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DPOAE
Evaluation method:
Noise-weighted phase statistics
Stimulus:
Primary tone pair, F2/F1 = 1.24
Available test frequencies:
F2 = 1, 1.5, 2, 3, 3.5, 4, 5 and 6 kHz
Default test frequencies:
F2 = 2, 3, 4 and 5 kHz (
Pass/Clear Response
at 3 out of 4)
Available test levels:
L1/L2 = 60/50 dB SPL and L1/L2 = 65/55 dB SPL
Default test level:
L1/L2 = 60/50 dB SPL
Test display:
DP-Gram, DPOAE level, noise level, test progress
Result display:
Overall
Pass/Clear Response
or
Refer/No Clear Response
, DP-Gram with
DPOAE and noise level.
ABR
Evaluation method:
Noise-weighted averaging and template matching
Stimulus:
30, 35, 40 or 45 dB nHL chirp
Chirp rate:
78-82 chirps per second (randomized)
Impedance test range:
1 to 99 k
Impedance accepted for test:
< 12 k
Impedance control:
Before test, periodically during test, stimulus continues during impedance con-
trol
Test display:
Statistical graph, impedances, ABR detection probability, EEG-level and test
progress
Result display:
Statistical graph, impedances, EEG-level and overall
Pass/Clear Response
or
Refer/No Clear Response
.
Electrodes:
Disposable hydrogel electrodes
3.3
Device
MADSEN AccuScreen is type 1077 from Natus Medical Denmark ApS.
Dimensions
Approx.
200 x 73 x 34 mm (7.9 x 2.9 x 1.3 inches)
Weight
Approx.
240 g (8.5 oz) excluding battery
280 g (9.9 oz) including battery
Display
Type:
Color, TFT, touchscreen with adjustable LED backlight
Dimensions:
89.4 mm (3.5 inches)
Resolution:
240 x 320 pixels
Keypad
Resistive touchscreen (can be used with gloves)
Sound
Built-in speaker for key click and
Pass/Clear Response
and
Refer/No Clear Response
sounds
Language settings
Up to 7 user selectable languages available in selected language package