Probe Specifications

Measurement Type: Otoacoustic Emissions
Frequency Range: 1.5 to 12 kHz (DPOAE)
                                  0.7 to 4 kHz (TEOAE)
Stimulus Intensity: 40 to 70 dB SPL (DPOAE)
                                          83 dB SPL (TEOAE)
Maximum Output: 90 dB SPL
Microphone System Noise: -20 dB SPL @ 2 kHz (1 Hz bandwidth)
                                              -13 dB SPL@ 1 kHz (1 Hz bandwidth)
Stimulus Sampling Rate: 31,250 Hz

Instrument Specifications

Power Supply: (4) AA/UM-3/R6 cells - Alkaline (6 V total)

Battery Life: Approximately 300 tests

Instrument Weight: 10.6 oz. (300 g) including batteries

Printer Specifications

Type: Thermal dot matrix line printer

Speed: >10 lines per second

Operating Noise: <50 dB SPL

Weight: 1 kg (2.2 lbs) including power supply

Power Source: Medical grade power supply (EN 60601-1)

Input: 120-240 V

Output: 7 V, 5.0 A

Paper: Calculator-type thermal roll Ð 2.25" wide (57 mm)

Processor Specifications

Digital Signal Processor: Motorola 56303 24-bit 66 MHz 3.3 V

Storage: 2 Mbit EEPROM (non-volatile)

Battery Backup: 0.1F 5.0 V (approx. 24 hours)

CODEC: 18 bit D/A, 18 bit A/D 96 dB SNR typical

Display: 4 line x 10 character STN liquid crystal

Switches: Membrane keypad 1 million + actuation

Remote Probe Specifications

Length: 6 ft. (1.8 m)

Weight: 3.6 oz. (102 g)

Connector: 8-pin MiniDIN

Maximum SPL

The maximum sound pressure level output of this instrument remains well below 90 dB SPL throughout the audible frequency range of 20 Hz to 20 kHz. This level is well within OSHA permissible limits of 90 dBA for 8 hours.

Conforms to IEC 601-1.