Hospital Audiometer Ear Diagnostic Hearing Test Portable Screening Diagnostic Audiometer

• Customization: Available
• Classification: Audiometer
• Type: Audiometer
• Model NO.: LTH-AD401
• Group: Infants and Young Children
• Product: Hearing Audiometer
• Transport Package: Standard Export Pack
• Specification: standard
• Trademark: LETY
• Origin: China
• Production Capacity: 1000units/Month

Product Description

Product Description

Hospital Ear Diagnostic Hearing Test Portable Screening Diagnostic Audiometer
Model : LTH-AD104

 

There are two versions of AD104:

AD104-II is superior to 104-I in two ways:
1) 104-II has the software for the Bone Conduction function while 104-I doesn't.
2) 104-II can be connected to a computer directly while 104-I can not.
 
Product Description
Extended range function: If haven't been selected, AC output restrictions smaller than the maximum output 20 dB
Input: pure tone, warble tone ±5%, 5Hz Sine wave frequency modulation.
Masking: Both air conduction and bone conduction can do masking
Computer Interface: USB data transfer interface, can transfer data to a computer, and also can set up personalized print reports.
Output: Air conduction earphone(L/R), Bone conduction earphone(L/R), Insert earphone, Insert masking.
Transducer: TDH 39 earphone (standard configuration)
Ear~Tone 5A Insert earphone (Optional)
B71 bone conduction earphone (standard configuration)
Monitor function: Optional
Feedback words: Built-in feedback words microphone. 50-90 dB SPL can be continuously adjusted in the panel.
Send test voice: Manual or automatic/ Monopulse/ Multiple-pulse
Frequency selection: If you need to fast test, you can select 250 Hz,750 Hz,1500Hz, 4k Hz, or 6k Hz.
Display: Letter-figure
Patient signal: Responder
Structure: Engineering plastic shell
Attenuator Control: Standard rotary switch (can choose Push-button switch)
Power supply: Outer type regulated power supply (standard configuration), 220-230V,50-60 Hz
Fuse: T2A Built-in fuse

Specification

• Headphones: TDH39(AC), B71-W(BC)
• Power supply: 230V AC transformer, 50Hz
• Dimension: 43*30*11cm
• Microphone: Internal

Technical Data

• Output: Air Conduction, Bone Conduction, Free field
• Frequency: AC 125-8000Hz    BC 250-6000Hz
• Masking: Air Bone and Contralateral 
• Test: AC Test, BCTest
• Tone: Pure tone, pulse tone, warble tone
• Precision: sound pressure ±1dB
• Frequency: less than ±2%
• Distortion: Air conduction: ≤2.5%  Bone conduction: ≤5%

Frequency and maximum output intensity

Frequency	AC dB HL	AC dB HL	BC dB HL
Hz	TDH39	Ear-Tone 5A	B71
125	60	60	/
250	100	105	45
500	120	110	60
750	120	115	60
1000	120	120	70
1500	120	120	70
2000	120	120	70
3000	120	120	70
4000	120	115	60
6000	110	100
8000	100	95

 

Standard accessory:
TDH39 Air conduction earphone
B71 Bone conduction earphone
responder, power line, USB line, CD software
audiometric leaves.

Detailed Photos