FA-10 / FA-12 Specifications

ANSI Audiometer Classification:

Type 3A

Input Power:

105V - 130V or 220V 50-60 Hz

Weight:

11 lbs (5 kg) without accessories

 

Size:

18.25" x 13.5" x 5.5" (45.6 x 33.8 x 13.8 cm)

Frequencies: (air & speaker)

125, 250, 500, 750, 1000, 1500, 2000, 3000, 4000, 6000, 8000
(bone) 250, 500, 750, 1000, 1500, 2000, 3000, 4000, 6000, 8000

Frequency Accuracy:

within 1%

Air Conduction Distortion:

Less than 3% THD (acoustic) when measured at the following HL levels: 125 Hz-75 dB; 250 Hz-90 dB.
500-6000 Hz-10 dB; 8000 Hz-90 dB.

Cross Talk:

-70 dB or better between channels.

Minimum Amplitude Range
(air) Telephonics TDH39) 100 Ohms:

125 Hz -10 to 75 dB HTL
250 Hz -10 to 90 dB HTL
500 Hz to 6 kHz -10 to 110 dB HTL
8 kHz -10 to 90 dB HTL

(bone) (Radioear B-71) 100 ohms

250 Hz -10 to 40 dB HTL
500 Hz to 750 Hz -10 to 60 dB HTL
1 kHz to 3 kHz -10 to 70 dB HTL
4 kHz -10 to 60 dB HTL
6 kHz -10 to 40 dB HTL
8 kHz -10 to 30 dB HTL

(speaker) (one speaker driven) 8 ohms

125 Hz -10 to 50 dB HTL
250 Hz -10 to 70 dB HTL
500 Hz -10 to 80 dB HTL
1 kHz to 6 kHz -10 to 85 dB HTL
8 kHz -10 to 80 dB HTL

Phones:

ANSI S3.6-1996 / IEC 645-1

Bone:

ANSI S3.6-1996 / IEC 645-1

Attenuator Range and Resolution:

-10 TO 110 dB HTL in 5-dB steps.
An additional -2.5 dB of setting is available by pressing the 2.5 dB button.

Attenuator Accuracy:

Maximum error at any one attenuator setting is ±1.5 dB.
Error between any two adjacent settings will be less than .75 dB.

Warble Tone:

10% frequency deviation at a modulation frequency of 5 Hz (±1/2 Hz).

Pulsed Tone:

Pulse frequency is 2.5 Hz (±1/2 Hz). 50% duty cycle (±20%).

Noise Generator:

White Noise: flat (±2 dB) to 8 kHz
Speech Noise: weighted random noise with a sound pressure spectrum density constant from 250-1000 Hz, falling off at a rate of 12 dB/octave from 1000 to 4000 Hz, within ±5 dB.
Narrow-band masking noise: as defined in ANSI 3.6 - 1989.

Channel Inputs:

Tone: pure, pulsed pure, warble, pulsed warble.
Speech Microphone: with adjustable gain control.
Noise: Speech, narrow band, or white.
External: 100K input impedance. Min signal = 100 mV RMS. Max signal = 8 volts peak.

VU Meters:

Each channel with LED bar graph. Range from -20 to +3 dB VU.
Accuracy: ±1 dB at 0 dB ±2dB at -10 & -20 dB.
Live voice characteristics as described in ANSI C16.5-1954 -(R1971) specifications for a VU meter, Sections 3.2 to 3.5 inclusive.

Channel Outputs:

Speaker: (One channel driven): Four watts RMS typical into 8 ohm sound field speakers (optional).
Earphones: Telephonics TDH39P: 100 ohm.
Bone Vibrator: (Radioear B-71 or equivalent): 100 ohm.

Opposite Channel Routing:

Left or Right channel output can be routed to opposite channel's output device. Accuracy is ±2 dB.

Speech Microphone:

Internal and external (optional)

Frequency Response:

±5 dB from 250 Hz to 4 KHz. Does not differ from that at 1000 Hz by more than ±5 dB, and does not rise at any frequency outside this band by more than 10 dB relative to the level at 1000 Hz.

Sound Field Speaker

±7.5 dB from 250 Hz to 4000 Hz. Greater than 90 dB SPL output at 3 feet (one meter) with 3 watts RMS input at 1000 Hz at a 45 degree azimuth.

Stereo Monitor Earphones:

Stereo with volume control; both audiometer channels are monitored along with talk back microphone and patient response switch (tone).

Talk Back:

level adjustable independently.

Talk Forward:

When 'Talk Forward' button is pressed, the output (adjustable) of the right speech microphone is switched into the outputs of both audiometer channels. Maximum talkforward level is 90 dB HTL or the maximum output of the selected transducer, whichever is less.

Hearing Aid Simulator

In addition to a flat response, "hearing aid" responses are available: Flat, slopes of -6 dB, -12 dB, -18dB, HFE.

Optional RS232 Computer Interface

Allows remote control of almost all aspects of audiometer operation.

Special Tests

SISI, ABLB, MLB.

.

IEC 60601-1       ISO-13485

Back to FA-10 / FA-12