FREQUENCY RANGE
• Air Conduction: 125 Hz - 20,000 Hz*
• Bone Conduction: 250 Hz - 8,000 Hz
• Sound Field: 125 Hz - 8,000 Hz
• Paired Inserts: 125 Hz - 8,000 Hz
• Frequency Accuracy: ±1%
• Total Harmonic Distortion: < 2% (earphones and paired insert phones), < 5% (bone vibrator)
HEARING LEVEL RANGE
• Air Conduction: -10 dB HL - 120 dB HL
• Bone Conduction: Mastoid: -10 dB HL - 90 dB HL, Forehead: -10 dB HL - 80 dB HL
• Sound Field: -10 dB HL - 90 dB HL (basic speakers), -10 dB HL - 96 dB HL (high performance speakers), -10 dB HL - 102 dB HL (high performance speakers and external booster amplifier)
• Paired Inserts: -10 dB HL - 120 dB HL
• Masking Intensity Range (Calibrated in effective masking): Narrow Band Noise: Maximum dB HL is 15 dB below tone, White Noise: Maximum dB HL is 30 dB below tone
SIGNAL FORMAT
• Steady: Tone continuously present
• Pulsed: Tone pulsed 200 msec ON, 200 msec OFF
• FM: Modulation Rate: 5 Hz, Modulation Depth: +/- 5%
• Pulsed/FM: Pulsed and modulated
• Pediatric Noise
• Pediatric Noise Pulsed
*Testing above 8,000 Hz requires HF transducer option