The Quest BA-202 series of Bio-Acoustic Simulators are used to perform the daily biological check for manual, automatic and microprocessor based audiometers.

These simulators eliminate the subjective results, costs, problems, and errors associated with using human subjects for the daily check.

As an added benefit, the BA-202-25 and BA-202-27 can also be used to continuously monitor room background noise in octaves.

BA-202 Technical Specifications

Test Frequencies:
125 Hz to 8 kHz

Background Test Levels:
(BA-202-25) 40 dB at 0.5 kHz and 1 kHz; 47 dB at 2 kHz; 57 dB at 4 kHz; and 62 dB at 8 kHz (per OSHA, Fed. Reg. March 8, 1983)

Background Test Levels:
(BA-202-27) 35 dB at 125 kHz; 25 dB at 250 Hz; 21 dB at 500 Hz; 26 dB at 1000 Hz; 34 dB at 2000 Hz; 37 dB at 4000 Hz and 8000 Hz

Calibration:
60 dB HL +/- 1 dB at 1 kHz continuous tone with TDH-39, 49 or 50 earphone

Accuracy:
Repeatable to within 2 dB when using an audiometer with a continuously variable HL control. When using automatic audiometers, the BA-202 will be repeatable within the HL step increments of the audiometer (usually 5 dB)

Transducers:
Two electret elements

Response Output:
Normally open and normally closed relay contacts (SPDT 3 wire output)

Hysteresis:
10 dB +/- 1 dB between ON and OFF indication for the LEFT/RIGHT headphone indicators when used with continuous tone input.

Relay Specifications:
250 mA current, 30 volts AC or DC. 20 million operations

Power:
9-volt alkaline battery
Low battery indicator when used in battery mode
Optional 120-volt or 220-volt power adapter

Size:"6.8" x 6.5? x 4.2" (173 x 165 x 107 mm)

Weight:
1.63 lbs. (739g); not including the remote microphone

Approvals:
CE Mark