Handtronix, Inc. since 1988

Features & Specification for the OtoScreen

OtoScreen is the best hand-held hearing screener!

This inexpensive, handheld device is clinically accurate and less threatening to small children than larger models (1,2) and represents a step forward in the diagnosis of hearing loss.

The OtoScreen device boasts features which characterize it as a unique state-of-the-art instrument such as crystal components, solid-state circuitry and touch sensitive buttons. Other features include a standard MX-41AR cushion, automatic shut off, and low battery indicator.

Special Features

  • Small and compact. Easily fits in a lab coat pocket
  • Allows better eye contact for more accurate results
  • Rugged; Suitable for intensive use
  • Very easy to learn and operate
  • Uses a standard 9 volt battery lasting several months
  • Low-battery indicator
  • Automatically powers down when not in use
  • Standard MX 41/AR cushion
  • Can be calibrated on standard couplers
  • Silent buttons with time delay to eliminate finger noise
  • Four frequencies: 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz
  • Two intensity options:
    • Standard - 25 and 40 db HL
    • Pediatric - 20 and 40 db HL

Specifications

Frequency (Hz)

 

crystal controlled

500

+/- 0.5%

crystal controlled

1000

+/- 0.5%

crystal controlled

2000

+/- 0.5%

crystal controlled

4000

+/- 0.5%

 

Risetime (milliseconds)

80 - 150

Typical

 

Distortion

 

Total Harmonic Distortion

 < 1.5%

Typical

2nd and 3rd harmonics

 < 1.5%

Typical

4th & higher harmonics

< 1.0%

Typical

 

Intensity dB HL

 

Pediatric

20 & 40

+/- 3 dB HL

Standard

25 & 40

+/- 3 dB HL

 

Power On to Tone On Time

1 sec

Typical

Tone and Boost Delay Times

1 sec

Typical

Power Off Delay Time

4 secs

Typical

1. Alvord LS: Miniature audiometric devices: Are they clinically accurate? Hearing Instruments 1992;44 (6) 24-25.
2. Alvord LS: In-office screening of hearing by physicians. Otology Audiology Workshop, Breckenridge, Co 1988.