Ipsilateral Stimulation
Tone:
500 Hz, 1000 Hz, 2000 Hz, 4000 Hz
Frequency accuracy:
± 0.5%
Threshold range:
500 Hz at 50 to 105 dB HL ± 3 dB
1000 Hz at 50 to 110 dB HL ± 3 dB
2000 Hz at 50 to 110 dB HL ± 3 dB *
4000 Hz at 50 to 100 dB HL ± 3 dB
* For probe tones above 226 Hz, artifacts may start to occur at levels above
105 dB HL
Screening range:
500 Hz at 70 to 100 dB HL ± 3 dB
1000 Hz at 70 to 105 dB HL ± 3 dB
2000 Hz at 70 to 105 dB HL ± 3 dB *
4000 Hz at 70 to 105 dB HL ± 3 dB
* For probe tones above 226 Hz, artifacts may start to occur at levels above
105 dB HL
THD:
< 5% for levels below 110 dB HL
< 10% for levels above 110 dB HL
Range:
BBN, LPN, HPN at 50 to 110 dB SPL * ±3 dB (* measured in calibration
coupler)
Screening range:
BBN at 50 to 90 dB SPL * ±3 dB (* measured in calibration coupler)
Step size dB:
1, 2, 5, 10 dB
Decay range:
50 to 100 dB HL* (* artifacts may start to occur at levels above 95 dB HL in 0.5
cc)
Temporal characteristics
Reflex Decay, Contralateral
Reflex Threshold and Screen-
ing
Ipsilateral Reflex Threshold
and Screening
Contralateral stimulation -
Probe tone > 226 Hz
Initial/terminal latency:
0 ms
0 ms
[1]
0 ms
Rise/fall time:
250 ms
250 ms
[1]
100 ms
Overshoot/Undershoot:
0 %
0%
0%
Notes:
1. Tol120/-0 ms
Characteristics for pulsed stimuli (ipsilateral)
Pulsed stimuli are used for ipsilateral Reflex Screening and Reflex Threshold testing.
27
User Guide
Otometrics - MADSEN Zodiac
