Specification
RA650 chassis, power supply/controller audio channels: Accepts up to a maximum of four (4) RA650 audiometer channels
Two RA650 chassis can be used to test up to eight subjects; Control Channel: One control model per chassis
Power: Auto-selectable 90-240 VAC ± 10%, 50-60 Hz
Dimensions: 6.5” W x 12.5” D x 9” H
Weight: 6.5 lbs. (1-station without earphones or handswitch); Communications: RS232C at 19200 Baud
Software interface: Manages up to eight (8) audiometer modules
Audiometer Module
Equals or exceeds ANSI S3.6-1969-2010
Test frequencies: 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz (8000 Hz selectable)
Frequency accuracy: Better than 1%, crystal controlled
Distortion: Total harmonic distortion below -40 dB (1%)
HL attenuator: -10 to 100 dB in 5 dB steps
HL accuracy: ±1 dB Calibration: EEPROM calibration, frequency requires no adjustment; calibration date entered at time of calibration
Rise/Fall time: Meets ANSI specifications
Earphones: Telephonics TDH-39, 10 ohm earphones in Model 41 cushions
Dimensions: 1” W x 11.25” D x 6.25” H
Weight: 0.5 lb
Power: Supplied by mainframe
Options Foshm
Windows based hearing conservation data management software
Audiocups – Noise attenuating enclosures
OSCAR 6™ – Electro-acoustic ear
RA650 Group Audiometric Testing System
Microphone provides talk-over communication with any or all test subjects |