Interacoustics Titan - Page 101

Titan Instructions for Use - EN Page 97
Calibration Properties
Calibrated
Transducers
Contralateral Earphone:
Telephonics TDH39 with a static force of 4.5N
±
0.5N
and/or EARtone 3A/IP30 and/or CIR55 insert phone
Probe system:
Ipsilateral Earphone: is integrated in the probe system
Probe frequency transmitter and receiver and
pressure transducer is integrated in the probe system
Accuracy
General:
Generally the instrument is made and calibrated to be
within and better than the tolerances required in the
specified standards:
Reflex Frequencies:
±1%
Contralateral Reflex and
Audiometer Tone Levels:
±3 dB for 250 to 4000Hz and ±5 dB for 6000 to
8000Hz
Ipsilateral Reflex Tone
Levels:
±5 dB for 500 to 2000Hz and +5/-10 dB for 3000 to
4000Hz
DPOAE Levels:
±1.5 dB for 1000 to 4000Hz and ±3 dB outside range
TEOAE Levels:
ABRIS Levels:
Pressure measurement :
Compliance measurement:
±2 dB for click stimulus
±2 dB for all stimulus types
±5% or ±10 daPa, whichever is greater
±5% or ±0.1 ml, whichever is greater
Stimulus Presentation
Control
Reflexes:
ON-OFF ratio = ≥ 70 dB
Rise time = 27 ms
Fall time = 24.6 ms
A weighted SPL in Off = 31 dB
Impedance Calibration Properties
Probe tone
Frequencies:
226 Hz
±
1%, 678 Hz
±
1%, 800 Hz
±
1%, 1000 Hz
±
1%
Level:
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.
Distortion:
Max 1% THD
Compliance
Range:
0.1 to 8.0 ml
Temperature dependence:
-0.003 ml/°C
Pressure dependence:
-0.00020 ml/daPa
Reflex sensitivity:
Reflex artifact level:
0.001 ml is the lowest detectable volume change
≥95 dB SPL (measured in the 711 coupler, 0.2 ml, 0.5
ml, 2.0 ml & 5.0 ml hardwalled cavities).
Temporal reflex
characteristics:
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%
Pressure
Range:
Values between -600 to +300 daPa can be selected
in the setup.
Safety limits:
-750 daPa and +550 daPa, ±50 daPa