Operating Instructions
53
13 System Specifications
DPOAE SYSTEM
PRIMARY TONES:
Frequency: F2 from 1.5 kHz to 12 kHz
Intensity: Up to 6 kHz: 40/40 to 70/60 dB SPL
Over 6 kHz: 40/40 to 65/55 dB SPL
MIC SYSTEM NOISE:
<=-20 dB SPL @ 2 kHz (1 Hz Bandwidth)
ARTIFACT:
<-20 dB SPL @ 2F1-F2 Frequency
F1/F2 RATIO:
1.2 (default) adjustable 1.1 to 1.4
F1/F2 DIFFERENTIAL:
0 to 30 dB SPL
TEOAE SYSTEM
STIMULUS:
Adjustable up to 83 dB SPL Broadband Click
CLICK BANDWIDTH:
500 Hz to 4000 Hz
ANALYSIS BANDS:
6 or 10 Bands
ARTIFACT:
<-10 dB SPL
TYMPANOMETRY SYSTEM
PROBE TONE:
Frequencies: 226 Hz, 1000 Hz
Level: 85 dB SPL with in-ear calibration
AIR PRESSURE:
Range: 0.05cc to 3.0cc: +300 to -400 daPa
3.0cc or greater: at least +200 to -200 daPa
Capacity: 0.05cc to > 5.0 cc
Speed: 60 daPa/Sec. nominal
500 to 700 daPa/sec (depending on ear volume).
TEST TIME:
2.5 seconds nominal (depending on ear volume).
OVERPRESSURE LIMIT: 1.0cc ear canal volume < 3 psi (2000 daPa)
ACOUSTIC REFLEX SYSTEM
STIMULUS:
500, 1000, 2000, 4000 Hz Pure tone
Broadband noise, low pass noise, high pass noise
PROBE TONE:
226 or 1000 Hz
STIMULUS INTENSITY:
500-4,000 Hz 70-95 dB HL, in 5 dB steps
Noise stimulus 60-90 dB HL, in 5 dB steps
STANDARDS:
IEC60645-5
ANSI S3.39-1987
Содержание Ero Scan Pro
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