GSi TYMPSTAR PRO, Руководство пользователя

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Broad Band Noise Stimulus Signals
Output Minimum: 35 dB HL
Output Maximum: 108 dB HL
Noise Bandwidths
Low Band: 400 -1600 Hz
High Band: 1600 - 4000 Hz
Broad Band: 400 - 4000 Hz Spectrum re/- 10 dB relative to 1 KHz
Band-edges accurate to within ±15%
Roll off rate: > 12 dB/Octave
Click Stimulus Signals
Output Minimum: 35 dB SPL
Output Maximum: Ipsi: 110, Contra:120 dB SPL
Rate: 50-300/sec +/- 1/sec
External Stimulus Signals
Peak Voltage: 3 VAC
Input Impedance: 15 k Ohms
At 0.5VRMS 1kHz Maximum
Ipsi: 110 SPL
Contra: 120 SPL
External Stimulus Signals Calibration
The voltage requirement for external input is 0.5 VRMS to 1.0 VRMS. Once set,
the stimulus cannot be altered (voltage of frequency) or the outputs will lose their
calibration.
The frequency of the external stimulus must be carefully selected for the probe
tone with which it will be used. If the stimulus is too close to the probe tone
frequency, a stimulus artifact will occur during Reflex tests. Always check for
the stimulus artifact by presenting the maximum HL in a hard wall cavity and
note if there is any Y axis deflection.
The external input will be calibrated with default data when it leaves the factory.
The default data assumes that a 1.0 VRMS, 1 kHz voltage is applied at the input
and that the output is calibrated in SPL (i.e., 80 dB dial reading will provided 80
dB SPL of 1 kHz output).
Stimulus Interval and Minimum Range
1, 2 and 5 dB step size
Stimulus Level Control Accuracy
+/- 0.5 dB
Multi-Frequency Tympanometry Wide-Band Signal
226-8000 Hz broadband stimulus,
Click Rate: 21.5/sec
Infant Level: 96 dB peSPL
Adult Level: 100 dB peSPL