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audioscan Verifit VF-2 - User Manual

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Audioscan Verifit
®
User's Guide 3.12
November 2015

Table of Contents

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audioscan Verifit VF-2 Specifications

General IconGeneral
DisplayColor LCD
ConnectivityUSB, Bluetooth
Battery LifeUp to 8 hours
Operating System CompatibilityWindows, macOS
Power SupplyRechargeable battery
StandardsANSI S3.22
Testing CapabilitiesReal Ear Measurement, Hearing Aid Fitting, Speech Mapping

Summary

About Verifit

Safety Warnings and Notices

Provides crucial safety information and compliance statements for device usage.

EC Declaration of Conformity

Getting Started

Unpacking and Connecting

Step-by-step instructions for setting up the Verifit hardware components.

Microphone Connection

Details how to properly connect the various microphones to the system.

Test Box Measures - Setup

Calibrating Test Box Reference Microphone

Step-by-step guide for performing reference microphone calibration.

ANSI Hearing Aid Tests

ANSI 1996 Linear and AGC Tests

Procedures for performing linear and AGC tests under the 1996 standard.

ANSI 2003 Linear and AGC Tests

Procedures for performing linear and AGC tests under the 2003 standard.

Other Test Box Measures

Feedback Suppression Test

Assesses the effectiveness of feedback cancellation features.

Directional Function Test

Measures and visualizes the hearing aid's directional microphone performance.

On-Ear Measures - Setup

Calibration of On-Ear Probe Microphone

Procedure for calibrating the on-ear probe microphone assembly.

Positioning the Client

Guidelines for correctly positioning the client for on-ear measurements.

Positioning the Probe Tube

Detailed steps for inserting the probe tube into the ear canal.

On-Ear Instrument Measures

On-Ear Directional Testing

Step-by-step guide for conducting on-ear directional tests.

On-Ear Feedback Test

Procedure to assess feedback suppression in real-ear conditions.

RECD Measurement

Calibration of RECD Transducer

Steps to calibrate the RECD transducer for accurate measurements.

Measure RECD

Detailed procedure for measuring the Real-Ear to Coupler Difference.

Insertion Gain

Insertion Gain in SPL

Procedure for measuring insertion gain using Sound Pressure Level.

Insertion Gain in HL

Procedure for measuring insertion gain using Hearing Level scale.

Speechmap

Speechmap Fitting Procedures

Viewport

Troubleshooting

Self Test Failures

Steps to resolve issues encountered during the power-on self-test.

Test Box High Distortion or Noise

Troubleshooting common causes of high distortion or noise in test box measurements.

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