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Features and Specifications

Audiometer Acoustic Tests Output Level, Distortion, Narrowband Noise, White Noise, Speech Noise, Speech Level
Audiometer Electrical Tests Frequency, Distortion, Off Level, Rise Time, Fall Time, Overshoot, Crosstalk, Linearity, Warble, Pulse, SISI
Tympanometer Tests Probe Output Level, Compliance, Probe Pressure, Reflex Output Level, Distortion, Switching (rise/fall/overshoot/off)
Other Tests Handswitch test, Room Acoustic levels (1/3 Octave)
Transducers Supported Headphones: TDH-39/39P, TDH-49/49P, TDH-50/50P, DD45, Holmco 8103, Sennheiser HDA-280, Beyer DT-48
  Inserts: EAR 2, EAR-3A, EAR-5A, IP30 CIRR-22 Insert Masking Phone, Danavox Single Insert
  High Frequency Phones: Sennheiser HDA-200, HDA-280, HDA-300, Koss HV/1A
  Bone Oscillators: Radio Ear B-71, B-81, Oticon A20
Free Field Options Degrees of incidence (0/45/90)
Couplers Supported Headphones: NBS-9A/IEC-303, IEC-318
  Inserts: IEC-126/HA-2/DB-0138, IEC-711, HA-1
  High Frequency Phones: IEC 60318-2 Type 1 and IEC 60318-2 Type 2
Artificial Mastoids Supported ACS-M1, B&K-4930, Larson Davis AMC493 (AMC493 support includes temperature and humidity compensation). Flexible support for custom mastoids
   
Frequency Accuracy < +/- 1.0 Hz
Frequency Uncertainty 0.11 Hz (95% Confidence Level, k=2)
Amplitude Accuracy < +/- 0.2 dB
Amplitude Uncertainty 0.05 dB (95% Confidence Level, k=2)
Distortion < 0.20 % @ 125Hz
Linearity Test Limits +120HL to –10 HL
Test Modes

Manual - user prompted to set frequency, level and channel for each test point.  System provides audible feedback and waits for user to manually adjust the audiometer until within user definable threshold before proceeding to the next test point.  Designed for minimal user interaction for maximum productivity:

  User Controlled - for audiometers under serial control: System controls and adjusts the audiometer for each test point.  User determines which test section to perform.
  Fully Automatic - for audiometers under serial control: System controls and adjusts the audiometer for a full battery of tests.  User only prompted to change transducers.
Standards ANSI S3.6 (1969, 1989, 1996, 2004, 2010) IEC-60645, IEC 389