Hematology analyzer
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LTNA02 Diagnostic Audiometer
The LT D104 is a new portable diagnostic audiometer using state of the art. The Liquid Crystal Diode (LCD’s) on the display panel tells you the options you have selected. The Pure Tone has been derived using crystal controlled digital oscillator, meaning you can stop worrying about frequency shifts and recalibration.
Puretone is processed using narrow band filters, which reduces harmonic distortion to negligible levels.
The OPERATING MANUAL makes you familiar with various salient features this equipment offers. To get the maximum out of this manual, keep your LTNA02 in front and go on operating the equipment as manual tells you to.
Any wrong step or deviating from the step as given in the manual will not in any way damage the equipment.
To sum up, you are in for a new light-weight experience in diagnostic audiometry. With the clear instructions that are given in this manual, you will find it easy to learn operating the LTNA02 DIAGNOSTIC AUDIOMETER.
SPECIFICATIONS AND ACCESSORIES
OSCILLATOR : Digital oscillator
ATTENUATORS : Puretone: 5dB steps
MASKING : Wide Band: 10dB steps
RANGE OF ATTENUATOR : -10 TO 120dB
ATTENUATOR LINEARITY : 1.5dB for 5dB steps.
FREQUENCY RANGE : (For Air conduction) 0.125KHz to 8KHz.
(For Bone conduction) 0.250 KHz to 6KHz.
ACCURACY OF FREQUENCY CALIBRATION : +1%
ACCURACY OF HTL CALIBRATION : Within +2dB.
DISTORTION: All harmonics of any frequencies are greater than 40dB below the Fundamental.
TONE INTERRUPTION : Less than 25-m sec. for rise and decay of tone.
MASKING RANGE : 0dB to 100 dB SPL at ISO.10 dB Step.
POWER SOURCE: 230V/50Hz AC
Input : pure tone, warble tone ±5%, 5Hz Sine wave frequency modulation.
Masking : narrow-band noise, white noise.
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 (Optional)
Feedback words : Built-in feedback words microphone. 0-110 dB SPL can be continuous adjust in panel.
Send test voice: Manual or automatic
monopulse
multiple-pulse
Frequency selection :If you need to fast test, can select 125Hz,250 Hz,750 Hz,1500 Hz or 8k Hz.
Display : letter-figure
Patient signal: responser
Structure : Engineering plastic shell
Attenuator control : standard rotary switch (can choose Push-button switch)
Frequency and maximum output intensity :
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