GSi TYMPSTAR PRO, User Manual

Page: 124 / 134

Rate of Pressure Change
12.5, 50, 200, 600 daPa/sec +/- 10%
Acoustic Reflex Activating Stimulus System
Pure Tone Stimulus Signals
Frequency (Hz) Min Level
(dB HL)
Max
Level
(dB HL)
Ipsi
Max Level
(dB HL)
Contra-
Insert
Max Level
(dB HL)
Contra-
Headset Frequency
Accuracy
250 35 85 105 105 +/- 3%
500 35 100 110 120 +/- 3%
1000 35 105 120 120 +/- 3%
2000 35 105 120 120 +/- 3%
4000 35 100 115 120 +/- 3%
Broad Band
Noise
35 93 108 115
Low Band
Noise
35 94 109 115
High Band
Noise
35 90 110 115
Frequency (Hz) RETSPL
IPSI Probe RETSPL
Contra Insert RETSPL
Contra Headset
250 24.5 14.0 27.0
500 9.5 5.5 13.0
1000 6.5 0.0 6.0
2000 12 3.0 8.0
4000 3.5 5.5 9.0
Broad Band Noise 7.0 7.0 7.0
Low Band Noise 9.0 9.0 9.0
High Band Noise 7.0 7.0 7.0
Zero level reference values (250 Hz-4000 Hz) are a GSI Standard and come from
an internal study performed according to ISO 389-9. BBN, LBN and HBN
reference values were determined by GSI using the “Threshold Determination
Method”.
Pure Tone Harmonic Distortion
< 5% at 500 Hz to 2000 Hz, 100 dB HL
< 5% at 4000 Hz, 80 dB HL
< 10 % at maximum dB HL settings
NOTE: Levels are reduced as a function of volume at a rate of 1 dB SPL for
each .1 ml. Level reduction begins at 1.2 ml.