Salient characteristics-Audiology Equipment.docx

ATTACHMENT #1 LIST OF SALIENT CHARACTERISTICS

Auditory brainstem response test system Specifications/Salient Characteristics:

Standards:

Safety:

IEC 60601-1, Class I, Type BF and Type B

EMC:

IEC 60601-1-2

Power Supply:

Input Volts:

100 –240V, 50/60Hz.

Consumption:

26 W (0.3A Max).

Safety:

IEC 60601-1 class I, UL2601 Operating environment:

Operating Temperature:

15 °– 35° C (59 - 95F) Rel. Humidity:

30 – 90% Transport & Storage:

Storage Temperature:

0°C – 50°C (32°F - 50°F) Transport Temperature:

-2°0 – 50°C (-4°F - 122°F) Rel. Humidity:

10 – 95% (non-condensing) Warm up time 10 minutes at room temperature (20 °C) (68°F) EPA Preamplifier:

Two channels standard:

EPA4 Cable Collector (4 electrodes). Standard 50 cm. Option: 5 cm or 290 cm One Channel (optional):

EPA3 Cable Collector (3 electrodes). 50 cm Gain:

80 dB/60 dB Frequency response:

0,5 - 5000 Hz CMR Ratio:

Minimum >118 dB. Typical 130 dB < 100 Hz Radio frequency immunity:

Typically 25 dB improvement over previous available designs Max input offset voltage:

2,5 V Input impedance:

10 MΩ/ 170 pF Power from main unit:

Insulated power supply with 1500 V isolation. The signal is digitally/capacitive insulated.

Specifications Impedance measurement:

Selectable for each electrode Measurement frequency:

33 Hz Waveform:

Rectangular Measurement current:

19μA Range:

0.5 kΩ – 25 kΩ Stimulus:

Stimulus rate:

0.1 to 80.1 stimuli per second in steps of 0.1.

Envelopes/Windows:

Bartlett, Blackman, Gaussian, Hamming, Hanning, Rectangle and Manual (Rise/Fall and Plateau) or equivalent Masking:

White noise. Calibrated and presented in peSPL.

Transducer:

Ear Tone ABR insert phone, calibrated on an IEC 711 coupler.

Headphone with independent calibration Bone conductor Level: 20 – 135.5 dB peSPL, (-10 – 100 dB nHL) in 1 dB steps. Polarity: Condensation, Rarefaction, Alternating. Click: 100 μs (200Hz -11kHz) Tone Burst Frequency:250, 500, 750, 1000, 1500, 2000, 3000, and 4000 Hz. Tone Burst Stimulation Time: Stimulation up to 780 ms Level Specific CE-Chirps: 500, 1000, 2000, 4000Hz Calibrated in 5dB increments from 0-100dB Masking Level: +30dB to -40 dB relative to stimulus presented in peSPL.

Recording:

Analysis Time:

-150 ms prior to stimuli and up to 1050 ms A/D Resolution:

16 bit.

Sampling frequency 30 kHz Artifact Reject System:

Standard voltage based system Rejection levels:

Manual 0.2 - 640 μV input wuth 0.1uV steps.

Anti-aliasing filter:

Analog 5kHz, 24 dB / octave Dots per Trace:

450 displayed.

Low Pass Filter:

None or 17 – 12000 Hz, depending on the measurement type.

33 taps FIR Filter without wave peak latency displacement.

High Pass Filter:

0.83 Hz to 500 Hz depending on the measurement type.

DSP Low Pass Filter:

100, 300, 750, 1k, 1,5k, 2k, 3k, 4k, 5k, 7,5k Hz DSP High Pass Filter:

0.5, 1.0, 3.3, 10, 33, 100 Hz Normative Data: Editable Latency Templates Adult Normative Data for: Click, Broad Band CE-Chirp and Level Specific CE-Chirps Customized Print Reports: Independent print templates for each protocol Research Module (Optional): Export and analyze data in excel or a MATLAB program. Data can be logged per Epoch or by Session.

Speech ABR capability provided (ba,ga,ka syllable Wavefiles included

END OF SALIENT CHARACTERISTICS