AD-104 is a kind of high-precision,economical and practical screening audiometer.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.
AD-104 can conduct all standard hearing-aid test, Language hearing test and all special test that depend on structure.
The design of AD-104 is on the base of a advanced 24 pixels digital signal processing,can produce high quality signal,and own prodigious refractivity.
Easy operation process.Can show the current condition clearly.button and selector are all type of low noise.The voice level,frequency and other information could be showed on the display clearly.Language input signal can be provided by internal or external microphone.It has a function:when testing language hearing, masking signal and language signal can be provided to the ears at the same time,that is noise language testing.
There have 3 output option:standard earphone(AC),bone conduction(BC) and special output(SF),can be connected to free area megaphone or inserted earphone.
AD-104 can calibrate multiple types of earphone at the same time.
AD-104 can be use as mobile devices,and also as desktop.
AD-104 use keyboard to intall and operate,so it very easy to handle.
Display:
There are two output LED on both side of the disply,when the selected detection signal transfer to corresponding ear,the screen would show.During the audio detection,the up line of the display would show the strength that provide to left or right ear by dBHL ration.
When testing,the test ear would showon the disply. Test frequency would show in the middle of the screen.If cover the opposite ear,it will show in the opposite side.
AD-104 Technical Index
Channel:Two independent channel
Frequency: Air conduction; Bone conduction and free sound field 11 standard frequency,125-8000Hz,bone conduction 250-6000Hz,error less than 1%.
Masking:Pure tone test ;ipsilateral white noise
Sound pressure range:
8000-10
Output interface:TDH39 or plug-in Air conduction earphone71 Bone conduction earphone free sound field
Standard fountion: Pure tone test.Provide continuantpulse voice and warble tone
Normal: Press INT to start sound stimulate
Inversion: Press INT to stop sound stimulate.5dB step and 5dB step continuous attenuation,1DB error.
Have microphone
Distortion: Air conduction: <2.5%; Bone conduction: <5%
Operation Environment: Temperature + 10 C, air temperature 30%-90%,
Air pressure:860hPa -- 1060hPa
Preheating time: Less than 10 minutes
Size : 45cm*30cm
Weight : 1775g
Power source : 230VAC, 50Hz
Maximum power : 60VA
Executive standard : Audiometer producing standard: EN60645-1, EN60645-2,EN60645-4 and ANSI S3.6-1996
Safety standard : EN 60601-1,level 1 class B EN 60601-1-2EN 60601-1-4
Standard accessory: TDH39 Air conduction earphone,B71 Bone conduction earphone(reprovision),responder, power line.
