タイトルまたは説明

Test function and charateristic

• Air conductionPure tone test
• Provide continuantã€ï¿½pulse voice andtwitter
• Noise masking for ear(narrowband noise)
• Both sides independent sound track.
• Built-in MIC,convenient to communicate with patients.
• Humanizing sound intensity output extend botten,to protect patient’s hearing.
• Can choose bone conduction test
• Can choose air conduction test

Performance index

Channel:Two independent signal channel and masking channel

Frequency: Air conduction and free sound field *******0Hz; (Bone conduction *******0Hz)

Masking:Contralateral, narrowband noise

Sound pressure range:

Air conduction : **5 – **0 Hz      **0 *-  *0HL

                   **0 *- ***0Hz      **0 *- **0HL

                        ***0Hz             **0 *- **0HL

Bone conduction : **0 – ***0Hz      **0 *-  *0HL

Accuracy: Sound intensity±3dB ,frequency drift<1%

Distortion: Air conduction: <3%; Bone conduction: <5%

Input interface: Response switch

Output interface:Air conduction earphone，Bone conduction earphone，free sound field

Standard fountion: Pure tone test.Provide continuantã€ï¿½pulse voice and warble tone

5dB sound intensity stepping

Sound intensity extension

Communicate with patient:Internal MIC（****0dB adjustable）

Answer lamp

Data transmission

Display screens: Double row LCD display

Power adapter: **0V AC transformer,9V output.

Bulkfactor: **0 x **0 x *0mm / 2.0 kg

Standard accessory:TDH*9 Air conduction earphone,responder, AC transformer

Optional Accessory:B**1 Bone conduction earphone