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AT235
Interacoustics AT235 Service Manual
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Service M
anual
AT235
x
7
A
ppendix
B
– Bl
ock Diagram
46
48
Table of Contents
Table of Contents
2
Introduction
3
About this Manual
3
About Warnings and Cautions
3
General Information
3
Maintenance and Disassembly
4
General Cleaning and Maintenance Procedure
4
Maintenance of the Pump Module
5
Disassembling the Cabinet
8
Mainboard
9
Rotary Dial
10
Display
11
Nice to Know
11
Calibration Procedure
12
Service, Adjustment and Repair
12
Hardware Calibration - Requirements
12
Equipment Requirements
13
Equipment Requirements for Impedance Calibrations
13
Equipment Requirements for Audiometer Calibrations
13
Calibration of Test Equipment
14
Calibration Mode Entering
14
Checklist for Calibration
15
Installing the Diagnostic Suite
16
Main Startup
18
Saving the Calibration Data
19
Calibration of Transducers
21
Calibration Standard for Impedance
21
Transducer Setup
21
Probe Tone Speaker Calibration
22
Transducer Calibration
23
Volume Calibration
24
Pressure Calibration
25
Calibration Standard for Audiometer
26
Selecting a Transducer / How-To-Guide
27
Transducer Types and Equipment Requirements for Calibration
29
Testing the Tympanometer Functionality
31
Pressure Test
31
Diode Test
32
Volume Test
33
Attenuator Test
35
Appendix A - Technical Specifications
38
Calibration Properties
40
Reference Values for Stimulus Calibration
42
Reference Equivalent Threshold Values for Transducers
43
Survey of Reference and Max. Hearing Level Tone Audiometer
44
Survey of Reference and Max. Hearing Level Tympanometer
46
Appendix B - Block Diagram
47
Appendix C - Parts & Accessories
48
Appendix D - Firmware Update Procedure
53
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Interacoustics AT235 Specifications
General
Brand
Interacoustics
Model
AT235
Category
Measuring Instruments
Language
English
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