Portable pure tone audiometer

タイトルまたは説明

Portable Diagnostic Audiometer AD**0

Specification

1. Channels: Two independent output channels

2. Air conduction:

(1) Frequency: **0Hz、**0Hz、**0Hz、***0Hz、***0Hz、***0Hz、***0Hz、

***0Hz、***0Hz、***0Hz;

(2) **0dB≤Hearing level for Testing≤**0dB.

3. Bone Conduction:

(1) Frequency: **0Hz、**0Hz、**0Hz、***0Hz、***0Hz、***0Hz、***0Hz、

***0Hz、***0Hz.

(2) **0dB≤Hearing level for Testing≤*0dB

4. Signal for testing: Pure tone, warble and narrowband noise.

5. Frequency accuracy: The allowable error of frequency for this audiometer is ± 2%.

6. Microphone: Built-in microphone or external gooseneck style microphone (optional) for easy communication with the testee. (Volume: ***0 adjustable)

7. Display: LCD display, double-line accurate numerical display.

8. Distortion: Air conduction less than 2.5% while bone conduction less than 5.5%

9. Accuracy: Continuous attenuation / stepping 5dB, error 1dB

*0. Masking: masking on the opposite side of the tested ear during air conduction and bone conduction tests.

*1. Protection function: Protect the testees hearing from damage as much as possible