natus Echo-Screen III Pro, Instructions For Use Manual

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026057 RevE 42 © 2020 Natus Medical Incorporated
Technical Specifications Echo-Screen III Pro Instructions for Use
Hearing Screening Modalities
TEOAE
Evaluation method Quality sorted binomial statistics
Stimulus type Nonlinear click sequence
Stimulus level 88 dBA SPL peak
Stimulus calibration Self-calibrated to ear canal
Click rate 67 Hz
Display Statistical waveform, measurement progress, TEOAE
detection level, noise level
DPOAE
Evaluation method Quality sorted phase statistics
Stimulus type Primary tone pair, f2/f1 = 1.21
Stimulus level 59/50 dBSPL
65/55 dBSPL (DPOAE+ only)
Stimulus calibration Self-calibrated to ear canal
Test frequencies 2 kHz, 2.5 kHz, 3.2 kHz, 4 kHz
1.5 kHz, 2 kHz, 3 kHz, 4 kHz (DPOAE+ only)
Display Phase statistics diagram, measurement progress, ambient noise level
ABR
Evaluation method Quality sorted binomial statistics on template convoluted signal
Stimulus type Click or chirp
Stimulus level 30, 35, 40, 45 dBnHL
Stimulus calibration Self-calibrated to ear canal (OAE probe)
Click/chirp rate 52 Hz
Notch filter 50 or 60 Hz, user selectable
Amplifier gain 79 dB
Amplifier CMRR > 105 dB @ 50Hz
Impedance sense current 10uA
Impedance sense signal 1 kHz square wave
Impedance test range 1 to 99 k
Ω
Impedance threshold <12 k Ω and balance <4 k Ω
Impedance monitoring Before test and periodically during test
Display Statistical graph, measurement progress, ABR level,
ambient noise level, myogenic noise level
Cables
OAE Probe
Type Flexible, shielded cable, 1.2 m (4 ft.)
Plug Push-pull, self-latching, plastic circular connector, 14 pins
Connector Lemo Redel P Series, 14 pins
ATA Cable
Type Flexible, shielded cable, 1.2 m (4 ft.)
Plug Push-pull, self-latching, plastic circular connector, 14 pins
Connector Lemo Redel P Series, 14 pins
PCA Cable
Type Flexible, shielded cable, 1.2 m (4 ft.)
Leads 3 leads (nape, vertex, and common)
Plug Push-pull, self-latching, plastic circular connector, 7 pins
Connector Lemo Redel P Series, 7 pins
PC Interface
Type USB 2.0
Connector Micro USB type AB
Max cable length 2 m (6.5 ft.)