Audiometer

AD-105 is a kind of high-precision,economical and practical screening audiometer. It can use for hearing test when fitting high-end hearing-aid and visiting service.And also use for hearing condition test of school, industrial and mining enterprises,army, fahrschule, rehabilitation centre and deaf training etc.

Test function and charateristic

• Air conductionPure tone test
• Provide continuant,pulse voice and warble tone
• 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 125-8000Hz; (Bone conduction 250-6000Hz)

Masking: Contralateral, narrowband noise

Sound pressure range:

Air conduction : 125 -- 250 Hz      -10 --  90HL

                   500 -- 6000Hz      -10 -- 120HL

                        8000Hz             -10 -- 110HL

Bone conduction : 500 -- 4000Hz      -10 --  70HL

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 continuant,pulse voice and warble tone

5dB sound intensity stepping

Sound intensity extension

Communicate with patient:Internal MIC(50-90dB adjustable)

Answer lamp

Data transmission

Display screens: Double row LCD display

Power adapter: 230V AC transformer,9V output.

Bulkfactor: 270 x 200 x 80mm / 2.0 kg

Standard accessory: TDH39 Air conduction earphone, responder, AC transformer

Optional Accessory: B-71 Bone conduction earphone