PROTON
PROTON
Technical specifications of PROTON digital portable audiometer
CHANNELS
Two separate channels : one for stimulus and one for masking
OUTPUTS :
Phones : Air condition
Bone : Bone condition
F.F : Free filed loudspeaker via external amplifier output voltage Max: 1.5 vrms.
EXTERNAL INPUTS
Microphone : Electret, for speech audiometry and patient communication
Tape/CD : stimulus channel, sensitivity 0.1-3.0 vrms, 47 kohm
DATA STORAGE
Audiometric test results can be saved, retrieved, edited and printed in values using impact printer. or saved in the PC for proton SX 3 & SX 5
CONNECTIVITY
USB output in model SX 3 & SX 5
COMMUNICATION AND MONITORING
Built in, talk-over with individually adjustable monitoring. visible patent response (LCD display) LCD bar-graph V.U.meter provides visual indication of stimulus level as well as displaying level for sensitivity adjustment of microphone/Tape/CD input signals.
DISPLAY
Alphanumeric transreflective LCD, 2 rows of 16 characters. screen dimension 155*16 mm. with LED backlighting.
DISTORTION
Less than 1% (T.H.D)
ACCURACY
Frequency : Better than +-2%
Hearing level electrical : within +-1% db of indication
Acoustical : within +-3 db of indication
CALIBRATION
AIR IEC645/ANS 13.6-1996
BONE ISO7556-1987/ANSIS.3.26-1981
MASKING IEC 645/ISO 8798 1987.
calibration data are stored in a programmable non-volatile memory.
POWER SUPPLY
230 V AC Approximately 500Hz
OPERATING ENVIRONMENT
Temperature : Max 50 degree celsius.
Relative humidity : Max 90%.
CONSTRUCTION
Molded ABS, Non-corrosive.
DIMENSION & WEIGHT
(275*200*80) mm. -1.7 kg approx. without carrying case.
STANDARD ACCESSORIES
DR 59 Headset, TDH 39 (optional) bone conductor with headband (Radioear B-71). patient response hand switch, dust cover, audiogram pad, 1 blue and 1 red pen. operation manual.
| unction. fully click free operation over entire range. | ||
| Hearing level range air | Max 120 db HL at 500-6000 Hz. Max 110 Db. at 250 Hz, Max 100 Db. at 8000 Hz. | Max 120 db HL at 500-6000 Hz. Max 110 Db. at 250 Hz, Max 100 Db. at 8000 Hz. |
| Masking | wide band | wide band, speech band, narrow band. |
| Frequencies bone | 250-500-1000-1500-2000-3000-4000 Hz |
250-500-1000-1500 2000 3000-4000-6000 Hz |
| Tone | continuous, pulsed pulsing rate 1.5 Hz | continuous, pulsed warble pulsing rate 1.5 Hz |
| Special tests | Tone decay test, speech test. (pulse counter display) | Tone decay test, SISI test, speech test,(SISI score display, test can be aborted midway by using the patient signal switch or stimulus key.) |
| Speech Audiometry | stimulus via microphone or tape/CD | |
| P.C Connectivity (USB) | Available in model PROTON SX 3 | Available in model PROTON SX 5 |
| Hearing level Range | 70 db HL at 500-4000 Hz 60 Db at 250 Hz. |
80 db HL at 500-4000 Hz. 70 db at 250 Hz. 65 Db. At 6000 Hz. |
NOTE : The proton digital audiometer is also available in the battery operated option with a built in rechargeable maintenance free battery.
Optional Accessories : Free filed loudspeaker, amplifier and speech microphone.
