Instruments for Audiology - KC35 Clinical Audiometer

The KC35 is our classic two-channel audiometer. A wide range of input and output selections is available to ensure the most flexibility in choosing test stimuli and transducer combinations. Automatic SISI testing is included. Speech testing results are easily monitored by the automatic speech scoring function.

Full patient communication is made possible by the use of either the built in monitor speaker or headphones. As an option, the headphones are also available with a boom microphone as an alternative for live voice speech testing to the built in goose neck microphone. Optional insert phones may be used and calibrated separately from the TDH39P headphones.

Free Field testing options range from a cost effective built in amplifier to external high powered units for flexibility in sound output levels.

The KC35 is designed to work seamlessly with NOAH as well as Windows98 based Interacoustics programs to provide on-line monitoring and printing of test results.

KC35 Technical Specifications

Standards:

Safety: EN 60601-1.
Audiometer: EN 60645-1, EN 60645-2, ANSI S3.6
Tone audiometer type: 2.
Speech Audiometer type: A or A-E.
Calibration: ISO 389-1, ISO 389-2, ISO 389-3 ISO 389-4.

Medical CE-mark:

Approved for Medical CE Marking by TÜV. Identification No. 0123

Channels:

Two independent channels

Maximum Hearing Levels dBHL:

HZ	AC TDH39	AC EAR-Tone 3A	BC	NB	FF Int.	FF 105	BB / SN
125	90	90			65	70	100
250	110	110	45	70	75	90	100
500	120	120	60	90	80	100	100
750	120	120	70	100	90	100	100
1000	120	120	70	100	90	100	100
1500	120	120	70	100	90	100	100
2000	120	120	70	100	90	100	100
3000	120	120	80	100	90	100	100
4000	120	115	80	100	90	100	100
6000	120	100	50	100	90	100	100
8000	100	95	50	80	80	80	100

Extended Range in Channel 1 allows air conduction intensities to be limited to 20 dB below maximum output.

Channel 1:

Input: Tone, Microphone, Tape/CD 1+2. Output: Left, Right, Bone L+R, Free Field 1+2, Insert Phones.

Channel 2:

Input: Tone, Microphone, Tape/CD 1+2, NB, SN, BB.Output: Left, Right, Bone L+R, Free Field 1+2, Insert phones, Insert masking, Off.

Presentation Channel 1:

Manual or reverse. Single or multiple pulses. Single and Multiple Pulse Speed: 150, 200, 250, 500, 750, 1000, 1500, 2000, 4000, 5000 ms.

Presentations Channel 2:

Manual or reverse. Simultaneous or alternate to Channel 1.

Modulation:

Warble + 5% 5 Hz. True Sine Wave.

Synchronous Masking:

Locks Channel 2 attenuator to Channel 1 attenuator.

Attenuators:

Totally Click Free -10 to 120 dB HL in 1 or 5 dB steps.

Tone Switches:

Silent presentation switches.

Transducers:

TDH39 Audiometric Headset.
EAR-Tone 3A Insert Phones (optional).

	Tone*	NB	SN	SP	BB
L	x	x	x	x	x
R	x	x	x	x	x
B	x	x	x	x	x
INS	x	x	x	x	x
FF.1	x	x	x	x	x
FF.2	x	x	x	x	x

*Warble Tone can freely be selected.

Communication :

Talk Forward: 0-110 dB SPL: Continuously adjustable on operation panel via built-in goose neck microphone.
Talk Back: Microphone input. Level adjusted on operation panel.
Monitor Output: Built-in loudspeaker, headphone or active loudspeaker. Monitor output level adjusted on the front panel.

Colour Printouts :

Via MS25, MS40 and Computer

Computer Communication :

Built-in RS232C two way computer interface which allows the computer to both monitor and control the KC35. Control actions will be indicated on operation panel and display. Using a PC as an on-line monitor is possible.

Examples of Compatible Windows Software :

IaBase95 database program.
PrintView for on-line PC monitoring and printing.
NOAH hearing aid fitting software.
Connex hearing aid fitting software
PAX hearing aid fitting software.

Test Types :

Tone: Manual, continuos, single pulse, pulsing (variable).
Speech: Live voice or two tape (or CD). Built-in goose neck microphone. Boom microphone of monitor headset (optional). Score counter which calculates in % the number of correct responses.
Auto Threshold: Patient controlled Hughson-Westlake test after ISO 8253-1. 3 out of 5 or 2 out of 3 selectable response criteria. Reduced frequency range option for rapid test.
ABLB: Individually adjustable pulse speed and pulse length.
SISI: 0, 1, 5 dB, 20 increments. Automatic score counter which calculates in % the number of response to 1 dB increments.
Stenger: Pure tone or Speech can be used for Stenger tests.

Free Field :

System FFAC33: Built-in 2x12W amplifier AC33-APD and two ALS3 speakers. 95dB SPL (optional).
System FF105: External 2x70W amplifier, AP70, and two ALS7 speakers. 105dB SPL (optional).
System FF115: 2 external 2x70W amplifier, AP70, and two ALS15 speakers. 115dB SPL. (optional).

Display :

Alphanumeric Transflective LCD. Supertwist 2 rows of 24 characters. LED Back-lit. .

Dimensions :

LxWxH: 48x40x15 cm/19x16x6 inches. Weight: 9 kg / 20 lbs.

Power :

AC 50-60 Hz.100-120 V, 220-240 V .

Consumption:

Max. 250 VA

Construction :

Painted metal cabinet. Push buttons available instead of rotary .

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