1.Air conduction pure tone test 2.Both sides independent sound track 3.Provide continuant,pulse voice and warble tone

Channel:Two independent signal channel and masking channel

Frequency: Air conduction and free sound field 125-8000Hz; (Bone conduction 250-6000Hz)

Masking: Pure tone test, white noise

Normal: Press INT to start sound stimulate

Inversion: Press INT to stop sound stimulate.5dB step and 5dB step continuous attenuation,1DB error.

Distortion: Air conduction: <2.5%; Bone conduction: <5%

Preheating time: Less than 10 minutes

Standard accessory: TDH39 Air conduction earphone, responder, power line

Sound pressure range

HZ	AC	BC
125	-10~90
250	-10~100	-10~45
500	-10~120	-10~60
750	-10~120	-10~60
1000	-10~120	-10~70
1500	-10~120	-10~70
2000	-10~120	-10~70
3000	-10~120	-10~70
4000	-10~120	-10~60
6000	-10~110	-10~50
8000	-10~110

                                                     

                                                                                    

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