Audioscan Verifit 2 - Manual (Page 141)

Verifit ® User's Guide Version 4.2 © June 2015
Test Box
Working Space WxHxD...................28.0x7.5x12.3 cm
............................................................11.0x3.0x4.8 in.
Speakers.....................................................................3
......................................................................@ 30 mm
.....................................................................@ 1.25 in.
Isolation @1 kHz...............................................>25 dB
Induction coil..............................................ANSI S3.22
...........................................................@ 23.5x16.9 cm
................................................................@ 9.2x6,7 in.
Battery simulator.......................................ANSI S3.22
Frequency range...................................200–12500 Hz
Coupler noise floor...........200–12500 Hz <41 dB SPL
Stimulus levels...........................................40 to 90 dB
.................................................................in 5 dB steps
Inductive stimulus levels............................ANSI S3.22
.....................................................................31.5mA/m
Test stimuli distortion......................<2% at 90 dB SPL
.....................................................<0.5% at 70 dB SPL
Test stimulus accuracy at reference mic for tones......
...........................................200–2000 Hz ±1.5 dB SPL
.........................................2000–8000 Hz ±2.5 dB SPL
..........................................8000–12500 Hz ±4 dB SPL
Equalization method.....................................................
..........................Real-time modified pressure method
...............................................(Stored for open fittings)
Analysis.............................Frequencies per octave 12
......................................Filter bandwidth 1/12
th -octave
Measurement accuracy for tones........ @ 1kHz ±1 dB
....................................re: 1 kHz 200 – 5000 Hz ±1 dB
..................................re: 1 kHz 5000–12500 Hz ±3 dB
Measurement range............................30–145 dB SPL
Harmonic distortion.......................................................
.........................Measurement 2
nd and 3 rd or 2 nd plus 3 rd
.....................................................Range 200–4000 Hz
Harmonic distortion accuracy
.......................................................@250 Hz 3.5-5.5%
.....................................................@1000 Hz 3.5-5.5%
.....................................................@2000 Hz 3.5-5.5%
.....................................................@4000 Hz 2.2-4.2%
Battery drain........................................Range 0–20mA
..............................................................Accuracy ±5%
....................................................Resolution.±0.01 mA
STIMULI
Tone
Tone burst
Pink noise
Dual directional noise
ISTS
Calibrated speech
Filtered speech (for frequency-lowering tests)
Live speech
User-supplied stimuli
ANSI S3.22 TESTS AVAILABLE
OSPL90
Full-on Gain
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