AmpliVox Otowave 202, Руководство по эксплуатации

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TECHNICAL SPECIFICATION
38
D-0115692-C (OM031)
–
Otowave 202 Operating Manual
15. TECHNICAL SPECIFICATION
15.1. PERFORMANCE
Tympanometry
Instrument type Meatus compensated tympanometer
Analysis performed Admittance peak level (in ml or
m
Ʊ
H
) & pressure; Gradient in
daPa (for 226Hz);
Ear Canal Volume (ECV) @ 200 daPa
Probe tone frequency, level and
accuracy
226Hz +/- 2%; 85dB SPL +/-2dB
H
/- 2%; 79dB SPL +/-2dB
over ECV range
Pressure levels and accuracy +200daPa to -400daPa +/-10daPa or +/-10% (whichever is
larger) over range 0.1ml to 5ml
Ear canal volume measurement range
and accuracy 226Hz: 0.2ml to 5ml +/- 0.1ml or +/-5% (whichever is larger)
H 1000Hz: 0.1ml to 5ml +/- 0.1ml or +/-5% (whichever is larger)
Sweep speed Typically 200 to 300daPa/sec; dependent on ear/cavity volume
Pressure limits (safety cutout) +600 and -800 daPa
Number of samples stored 100 per tympanogram
Reflex measurements
Measurement modes Ipsilateral, contralateral or both
Reflex tone levels and accuracy
(referenced to 2ml calibration volume -
compensates for measured ear volume)
Ipsilateral - configurable over range:
500Hz, 1kHz, 2kHz & 4kHz (+/-2%)
70dBHL to100dBHL (+/-3dB)
(2kHz level is restricted to maximum 95dBHL for ear canal
volumes greater than ~3.5ml)
(4kHz level is restricted to maximum 85dBHL for ear canal
volumes greater than ~3.5ml & maximum 95dBHL for all ear
canal volumes)
Contralateral - configurable over range:
500Hz, 1kHz, 2kHz & 4kHz (+/-2%)
70dBHL to110dBHL (+/-3dB)
(1kHz level is restricted to minimum 75dBHL for ear canal
volumes less than ~0.2ml)
(2kHz level is restricted to maximum 105dBHL for ear canal
volumes greater than ~3.5ml)
(4kHz level is restricted to maximum 100dBHL for ear canal
volumes greater than ~3.5ml & maximum 105dBHL for ear canal
volumes greater than ~1.5ml)
Reflex tone distortion (ipsi & contra) <5%
Number of reflex levels presented below
the selected maximum and step size(s)
available Ipsilateral - three lower levels:
100dBHL max, with 5dB or 10dB steps
95/90/85dBHL max, with 5dB steps
Contralateral - three lower levels:
110/105/100dBHL max, with 5dB or 10dB steps
95/90/85dBHL max, with 5dB steps