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Micro Audiometrics Earscan ES3 User Manual

Pure tone automatic threshold audiometer
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Earscan
®
ES3
Pure Tone
Automatic Threshold Audiometer
User's Manual
Rev 1.13

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Summary of Contents for Micro Audiometrics Earscan ES3

  • Page 1 Earscan ® Pure Tone Automatic Threshold Audiometer User’s Manual Rev 1.13...
  • Page 2 6. The Earscan® 3 does not implement handshaking protocol on the serial port. This means that the ES3 will not detect an unconnected serial port or a ‘printer not ready’ condition. Copyright © 2004-2024 Micro Audiometrics Corporation.

  • Page 3: Table Of Contents

    Table of Contents Introduction ......................5 Manual Conventions ................5 Keypad ....................6 Menu Navigation ..................6 Function Keys ..................7 Setup ........................8 Cable Connections ................8 Power Up ....................8 Power Options ..................9 Beep Volumes ..................9 Talk Over ....................10 Time and Date ..................10 Main Menu......................11...
  • Page 4 Serial Communications ................... 25 Transmit Options ................. 25 Screen and Clock Options ................26 Screen Properties ................26 Power-Up Logo ................27 Real-Time Clock Settings ..............27 Lock Settings ....................28 Reset Settings ....................28 Calibration ......................30 Technical Specifications ................. 31 Functional ‘Quick Checks’...
  • Page 5 List of Tables Table 1. Power Settings ................... 9 Table 2. Manual Audiometry Key Functions ..........14 Table 3. Other Manual Audiometry Options ...........16 Table 4. Automatic Threshold Audiometry Errors ........19 Table 5. Basic Automatic Threshold Test Options ........20 Table 6.

  • Page 6: Introduction

    INTRODUCTION The Earscan 3 model ES3 is a pure tone, full frequency, air conduction audiometer. ES3 audiometers are user customizable and can be battery, AC or USB powered. It provides manual/automatic threshold test capability with talk over. The ES3 is optimized for use in hearing conservation programs.

  • Page 7: Keypad

    Keypad ES3 audiometers have a blue keypad/overlay with 10 keys, labeled 1 through 0 (see Figure 1). Figure 1. ES3 Keypad Menu Navigation The ES3 menu system is designed for intuitive use. Navigating through menus is as simple as using the {▲}, {▼}, {►}, or {◄} keys to highlight a selection and then pressing {Ο} to make a selection.

  • Page 8: Function Keys

    Function Keys At times, ‘actions’ or ‘toggles’ will be displayed on the bottom line of the LCD. The keys just below the display are then used as ‘function’ keys to perform an action (A), or to toggle between two possible parameter values (a/b). Figure 2 illustrates how keys are mapped to actions or toggles shown on the LCD.

  • Page 9: Setup

    SETUP Cable Connections ES3 audiometers can be powered by 4 AA Alkaline batteries (battery compartment is accessible from the back of the instrument). Optionally, power from an AC adapter or USB bus power can be supplied via the 6-pin multi-purpose “mini DIN” connector on the top of the instrument.

  • Page 10: Power Options

    Power Options Inactivity timeouts automatically turn off the LCD backlight and power after selectable periods of inactivity to conserve energy and extend battery life (see Table 1; ( ) indicates default setting). Note: The backlight requires considerable battery power. Setting the backlight power-down interval longer than necessary will decrease battery life when the ES3 is battery powered (see Screen Properties).

  • Page 11: Talk Over

    Talk Over Talk over mode may be entered by pressing {5} while in audiometric testing mode. There is no specific microphone ‘opening’; sound arrives at the microphone through various openings in the cabinet (e.g., the slot in the side). Talk over volume may be adjusted with the {▲}, {▼}, {►}, or {◄} keys.

  • Page 12: Main Menu

    MAIN MENU 1-AUDIOMETRY Enters manual test mode. 2-DISPLAY RESULTS Displays test results on 1-2 screens. 3-DEMOGRAPHIC INFO 1-Patient ID Up to 21 digits. 2-Operator ID Up to 21 digits. 4-NEW TEST Begins new test, overrides previous test. PRINT OR SEND PREVIOUS TEST BEFORE STARTING NEW TEST.
  • Page 13 3-Stop On Inc. No / Yes 4-Max Presentations 15 / 20 / 25 / 30 / 35 / 40 5-1kP Test Both Ears No / Yes 6-Max False Responses 1 / 2 / 3 / 4 / 5 / 10 7-Ascend.

  • Page 14: Manual Audiometry

    MANUAL AUDIOMETRY To insure that pending data is cleared, always begin a new test via the main menu sequence ⌐New Test to clear pending test data. When the ES3 enters manual audiometry mode, the screen format shown in Figure 3 will be displayed (assumes factory defaults for starting frequency and level).

  • Page 15: Manual Audiometry Key Functions

    Figure 4. Display of Threshold The threshold may be cleared (Clr) by pressing key {4} (e.g., to retest a threshold). Only the currently-displayed threshold will be cleared. The test ear, signal mode, starting frequency and starting level are all user selectable, so these values may differ from the ones shown.

  • Page 16: Testing Procedure

    Testing Procedure Instruct the patient to raise his/her hand or press the patient response button (if available) whenever a tone is heard. Position the headphones over the patient’s ears (Red over Right ear, Blue over Left ear). Press {2} if necessary to toggle to the desired test ear. Select the test frequency using the {◄} / {►} keys.

  • Page 17: Other Options

    Other Options Additional manual audiometry options listed in Table 3 may be accessed via the menu sequence ⌐Setup ⌐Audiometry Setup ⌐Manual Audiometry. To change an option, highlight the option to modify using the {►}, {▲}, {▼} and {◄} keys, and press {Ο}.

  • Page 18: Automatic Threshold Audiometry

    AUTOMATIC THRESHOLD AUDIOMETRY To insure that pending data is cleared, always begin a new test via the main menu sequence ⌐New Test to clear pending test data. The automatic threshold test option performs a modified Hughson-Westlake test. Figure 5 shows the display format used for Automatic Threshold tests. This ex- ample indicates that a threshold of 25 dB was registered in automatic test mode (indicated by “a”) for 3000 Hz at the left ear.

  • Page 19: Test Procedure

    Test Procedure Instruct the patient to press the response button whenever a tone is heard. Position the headphones over the patient’s ears. From the manual audiometry screen, press key {1} to begin the automatic threshold exam. Test Protocol The automatic test begins at the level and frequency indicated in the auto- matic threshold audiometry settings.

  • Page 20: Automatic Threshold Test Error Conditions

    After testing at all the selected frequencies for the ear, the ES3 will examine the other ear to see if testing has been completed for each frequency. If the opposite ear has not been tested, ES3 will select the opposite ear, and begin testing in the manner described beginning with step 1.

  • Page 21: Other Options

    Other Options Basic automatic threshold test options (see Table 5) are selectable via the menu sequence ⌐Setup ⌐Audiometry Setup ⌐Auto Threshold. Table 5. Basic Automatic Threshold Test Options Starting automatic Left, (Right), Better Ear threshold exam Frequency Order Frequency presentation order 1k/P, 500, 1000, 2000, 3000, 4000, 6000, 8000 Starting Level...

  • Page 22: Table 6. Advanced Automatic Threshold Test Options

    Table 6. Advanced Automatic Threshold Test Options Level Override Maximum starting level when 40, 45, 50, 55, 60, changing frequency during (65), 70 automatic threshold exam. Faster Method Should gross increments and No, (Yes) decrements be used? Stop On Inc. Should test be stopped if a No, (Yes) reliable threshold cannot be...

  • Page 23: Test Results

    TEST RESULTS Audiometric test results can be displayed on the LCD or transmitted to an attached PC or printer. Displaying Results on the LCD Test results are displayed via the menu sequence ⌐Display Results. Results obtained via automatic testing are displayed with an ‘a’, and results obtained via manual testing are displayed with an ‘m’.

  • Page 24: Display Results Key Functions

    Display Results Key Functions Table 7 lists the valid keys when in the display test results mode. Table 7. Display Results Key Functions {◄}, {►} Scroll the display screen {▲}, {▼} {Menu} Exit display mode and return to the menu system Quantifying Hearing Loss Table 8 provides a general reference for converting threshold in decibels to degree of hearing loss.
  • Page 25 (this page intentionally left blank)

  • Page 26: Serial Communications

    SERIAL COMMUNICATIONS The ES3 can transmit data to a computer or to a printer. The default output device is selected using the menu sequence ⌐Setup ⌐Communications ⌐Default Output, and data is transmitted using the ⌐Send Data main menu option. Note that the ES3 implements no handshaking protocol for serial communications.

  • Page 27: Screen And Clock Options

    SCREEN AND CLOCK OPTIONS LCD brightness and contrast are user adjustable to allow optimizing the display for differing viewing conditions (e.g., ambient lighting or viewing angle). The contrast setting has no appreciable effect on battery life, but higher brightness settings require more power and will decrease battery life.

  • Page 28: Screen Properties

    Screen Properties The LCD Screen is preset at the factory with typical contrast and brightness settings. Adjusting either setting may necessitate adjusting the other; e.g., increasing screen brightness may require changing contrast for optimum viewing. LCD contrast can be adjusted via the menu sequence ⌐Setup ⌐Display ⌐Contrast. Use the {◄} / {►} keys to adjust contrast to the desired setting.

  • Page 29: Lock Settings

    LOCK SETTINGS All user selectable instrument settings may be “locked” if desired via the menu sequence ⌐Setup ⌐General ⌐Lock Settings. Enter a password and press {Ο} to lock all user settings at their current state. Caution! Be sure to record or memorize the password used to lock instrument settings.
  • Page 30 (this page intentionally left blank)

  • Page 31: Calibration

    CALIBRATION Micro Audiometrics recommends that audiometers be calibrated annually. About one month before the annual calibration due date, the ES3 will begin displaying a reminder at power up that the due date is approaching. This reminder will be cleared once the instrument is calibrated. If the calibration due date passes and the instrument has not been calibrated, a caution will be displayed regarding potential test data invalidation.

  • Page 32: Technical Specifications

    TECHNICAL SPECIFICATIONS ANSI S3.6 Type: Frequencies (Hz): 125, 250, 500, 750, 1000, 1500 (+/- 1%) 2000, 3000, 4000, 6000, 8000 Levels TDH-39 125 Hz -10 to 65 (60 Ω) 250 Hz -10 to 90 Phones 500 thru 6000 Hz -10 to 100 (+/- 1 dB) 8000 Hz -10 to 90...

  • Page 33: Functional 'Quick Checks

    FUNCTIONAL ‘QUICK CHECKS’ The following checks can be used to verify instrument operation and to help narrow the focus for solving problems. At power-up after a manual power-down, the ES3 logo should either scroll onto the LCD or appear quickly, depending on the scroll setting, and the backlight should be on.

  • Page 34: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE Problem Possible Solution ES3 does not power up. Check batteries or verify that wall cube is attached and plugged in. Signal is missing or intermittent. 1. Verify that headset/response button cable connector is securely attached and mounting screws are snug. 2.

  • Page 35: External Interface

    EXTERNAL INTERFACE Connectors The ES3 form factor necessitates a non-standard approach to headset and interface cable attachments. The headset attaches to a high-density 15-pin D-Subminiature connector, and is held in place with allen (hex) head screws to minimize the possibility of accidental mismatch of headset to instrument. All other cables are attached via a multi-purpose 6-pin mini DIN connector.

  • Page 36: Headset Connector

    Not Used DPU-414 Printer Switch Settings The setup switches on the Seiko Instruments DPU-414 printer should be set as follows to ensure compatibility with Micro Audiometrics ES3 audiometers. SW1 - 1 - OFF SW2 - 1 - ON SW3 - 1 - ON 2 –...

  • Page 37: Earscan 3 Information

    Earscan 3 Information General Earscan 3 information is displayed via the menu sequence ⌐Setup ⌐General ⌐Earscan 3 Info. (e.g., see Figure 7). Serial number and firmware revision are important when upgrades, updates, and/or service are being considered. Figure 7. Information Display...

  • Page 38: Warranty

    2. Micro Audiometrics Corporation warrants this Earscan® 3 Pure Tone Audiometer to be free from defects in materials and workmanship for five (5) years and the headset and patient response button for one (1) year under normal use.

  • Page 39: Contact Information

    Contact Information For additional information or assistance, contact your local distributor or contact Micro Audiometrics directly at: Micro Audiometrics Corporation 1901 Mason Ave, Suite 104 Daytona Beach, FL 32117 USA Phone: (386) 888-7878 Toll-free: (866) 327-7226 Product and company information is available on the internet: www.earscan.com...
  • Page 40 ® Earscan® is a registered trademark of Micro Audiometrics Corporation. Information in this manual is believed to be accurate; however, Micro Audiometrics Corporation assumes no responsibility for its use. Content is subject to change without notice. No part of this manual may be reproduced without written permission.