Interacoustics Titan IMP440 Setup & Installation page 40

Impedance Calibration Properties
Probe tone
Compliance
Pressure
Reflex Calibration Standards and Spectral Properties:
General
Contralateral Earphone
Ipsilateral Earphone
The risk of artifacts at higher stimulus levels in reflex measurements are minor and will not activate the
reflex detection system
Titan
Frequencies:
Level:
Distortion:
Range:
Temperature dependence:
Pressure dependence:
Reflex sensitivity:
Temporal reflex
characteristics:
Range:
Safety limits:
Specifications for stimulus and audiometer signals are made to follow IEC 60645-5
Pure tone:
Wide Band noise (WB):
−
Spectral properties:
Low Pass noise (LP):
−
Spectral properties:
High Pass noise (HP):
−
Spectral properties:
Pure tone:
Wide Band noise (WB):
−
Spectral properties:
Low Pass noise (LP):
−
Spectral properties:
High Pass noise (HP):
−
Spectral properties:
General about levels:
Setup and Installation Manual
226 Hz ± 1%, 678 Hz ± 1%, 800 Hz ± 1%, 1000 Hz
± 1%
85 dB SPL ±1.5 dB measured in an IEC 60318-5
acoustic coupler. The level is constant for all
volumes in the measurement range.
Max 1% THD
0.1 to 8.0 ml
-0.003 ml/°C
-0.00020 ml/daPa
0.001 ml is the lowest detectable volume change
Initial latency = 35 ms (±5 ms)
Rise time = 45 ms (±5 ms)
Terminal latency = 35 ms (±5 ms)
Fall time = 45 ms (±5 ms)
Overshoot = max. 1%
Undershoot = max 1%
Values between -600 to +300 daPa can be selected
in the setup.
-750 daPa and +550 daPa, ±50 daPa
ISO 389-1 for TDH39 and ISO 389-2 for CIR 22.
Interacoustics Standard
As "Broad band noise" specified in IEC 60645-5, but
with 500 Hz as lower cut-off frequency.
Interacoustics Standard
Uniform from 500 Hz to 1600 Hz, ±5 dB re. 1000 Hz
level
Interacoustics Standard
Uniform from 1600 Hz to 10KHz, ±5 dB re. 1000 Hz
level
Interacoustics Standard.
Interacoustics Standard
As "Broad band noise" specified in IEC 60645-5, but
with 500 Hz as lower cut-off frequency.
Interacoustics Standard
Uniform from 500 Hz to 1600 Hz, ±10 dB re. 1000 Hz
level
Interacoustics Standard
Uniform from 1600 Hz to 4000 Hz, ±10 dB re. 1000 Hz
level
The actual sound pressure level at the eardrum will
depend on the volume of the ear. See Table 2 for
details.
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