| Probe tone | Frequency: 226Hz. AT235h also: 678Hz, 800Hz, 1000Hz for traditional IYI-curve tympanometry.
Level: 85 db SPL. Gain Control: AGC. |
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| Memory | Internal memory for two ears. Each ear: 6 Ipsi and 6 Contra recordings. Each may have up to 6 stimuli.
Also, there is memory for additional manual reflex recordings. (Total max. 78 reflexes per ear). |
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| PC communication | Input/output for computer communication via USB. One mode allows an external PC to both monitor and control the instrument. The control actions can be followed on the display and operation panel.
Online communication, where the measurement data are sent to an external PC can be selected. |
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| Power supply | UPS400 (Included) 100-240V |
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| Consumption | 15VA, max. 45VA |
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| Dimensions/weight | 42 x 32 x 10.2 cm / 16.5 x 12.5 x 4 inches. Weight: 4.1 kg / 9.0 lbs. |
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| Impedance standard | EN 60645-5/ANSI S3.39, Type 2 |
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| Compatible Windows software | Interacoustics OtoAccess™ Database.
Diagnostic Suite for PC-integration (OtoAccess™ and Noah compatible) |
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| Included parts | ATP-AT235u Universal Probe System with shoulder strap and wrist strap
HBC39 Single contralateral headset
Power cable (110/220V, please specify)
BET55 Ear tips in a box
TPR26 3 Rolls of Recording Paper
Operation manual CD
Multilingual CE manual |
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| Audiometer Functions | Manual Audiometry.
Automatic Audiometry according to ISO 8253-1 (Patient controlled Hughson-Westlake). |
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| Air pressure | Control: Automatic. Range: Default +200 to –400daPa (max. +300 to -600daPa).
Safety limitation: -800 daPa and +600 daPa.
Pressure change rate: Selectable in the set-up between 50, 150 and >250 daPa/s or automatic.
Compliance: Range: 0.1 to 6.0 ml (numerical: 0.1 to 8.0 ml). |
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| Function | Automatic, where pump speed, start and stop pressure can be user programmed in the set-up.
AT235h: Auto and manual pump functions. |
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| Printer | Built-in fast thermal printer with paper width: 112 mm |
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| Eustachian tube function | AT235: Function test for use when the eardrum is intact.
AT235h: Function tests for use with both intact and perforated eardrums. |
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| Optional parts | TDH39 Audiometric headset
EAR-Tone5A Insert phones for audiometry
Soft carrying bag
CIR22 contralateral insert phone
APS3 Response switch
CAT50 Calibration unit 0.2-0.5-2.0-5.0 ml
IES-2 Impedance ear simulator
OtoAccess™ Database
Diagnostic Suite for PC-integration (OtoAccess™ and Noah compatible) |
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| Printer option | AT235/AT235h-xp is identical to the AT235/AT235h but has no built-in printer. Suitable for installations where computer connection takes care of printing. |
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| Audiometer standard | EN 60645-1/ANSI S.3.6, Type 4 Tone |
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| Safety standard | EN 60601-1, Class I, Type B |
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| Acoustic Reflex tests | Atomatic reflex: Two independent user selectable protocols. Series of fixed intensities available.
Automated intensity search functions available for threshold search and reflex growth indication.
Free mixing of Ipsi and Contra.
Manual reflex: Manual control of all stimuli. May also be used to redo part of automated test results.
Reflex decay: Manual control, with stimulus duration of 10 sec. Ipsi or contralateral stimulation. |
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| Frequencies and intensity ranges | Ipsilateral: Intensitiy up to 110dBHL.
Frequency: 250, 500, 1000, 2000, 3000, 4000, WB, HP, LP noise
Contralateral: Intensity up to 120dBHL. Frequency: 125 to 8000Hz, WB, LP, HP noise
Audiometry: Intensity from -10 to 120dBHL. Frequency from 125Hz to 8000Hz |
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| Attenuator | 1dB or 5dB steps |
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