audioscan Verifit VF-1 - Measure RECD

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Verifit

User's Guide Version 3.12



November 2015

Measure RECD

Connect the RECD transducer to the RECD jack on the front of the test chamber.

Prepare the system for on-ear tests. See Calibration of on-ear probe microphone.

Main Page

Default Chapter2
- Table of Contents2
1 About Verifit6
- New in this Software Release6
- Product Description6
- Associated Items and Supplies7
- SAFETY WARNINGS and NOTICES7
- Environmental Safety9
- Declaration of Electromagnetic Compatibility (EMC)9
- Warranty, Trademarks, Acknowledgments10
- EC Declaration of Conformity11
- Electronic User's Guide12
- How to Avoid Undesirable Side Effects12
2 Getting Started14
- Unpacking and Connecting14
- Microphone Connection15
- General Care Instructions16
- Microphone Care16
- Battery Pill Use and Care17
- Mouse, Keyboard, Barcode Scanner18
- Monitor Headphones18
- External Peripherals19
3 General Operation21
- Input Device Operation21
- Barcode Data Input21
- Keypad Keys22
- Menus, Lists and Buttons23
- Screen Messages and Help23
- Software Updating24
4 General Setup25
- Date and Time Setup25
- Display Settings25
- Saving Test Setup25
5 Networking27
- Networking Requirements27
- Networking Setup27
- NOAH Service Port28
- Changing the NOAH Service Port28
- Testing the NOAH Service Port29
6 Single Computer Connection30
- Automatic Connection (Recommended)30
- Static Connection30
7 Printing and Storing Results32
- Internal Printer Paper Loading32
- Barcodes, Tabular Data, Headers and Comments on Printouts33
- Local Printer Setup34
- Printing to USB Memory34
- Network Printer Setup35
- Printing to a Network File35
- Storing and Restoring Data - Setup36
- Storing and Restoring Data37
- Data Storage Using NOAH38
8 Test Box Measures - Setup39
- Test Box Screen39
- Format40
- Scale40
- Hide or Show Test Box Curves40
- 1996 Or 2003 ANSI Standard40
- ANSI Test Frequencies41
- Test Box Calibration Facts41
- Calibrating Test Box Reference Microphone42
- Calibration Check for Coupler Microphone43
- Coupling the Hearing Instrument for ANSI Tests44
- Coupling the Hearing Instrument for Test Box Speechmap44
- Positioning the Hearing Instrument45
9 ANSI Hearing Aid Tests47
- ANSI S3.22-1996 Facts47
- ANSI S3.22-2003 Facts47
- ANSI 1996 Linear and AGC Tests48
- ANSI 2003 Linear and AGC Tests48
- ANSI Test Results49
- ANSI Input-Output Curves49
- ANSI Telecoil Terminology50
- ANSI Telephone Simulator (TMFS) Test51
- ANSI Test Loop Test52
- Telecoil Test Results52
10 Other Test Box Measures54
- Harmonic Distortion54
- Noise Reduction54
- Feedback Suppression Test55
- Directional Function Test56
- Directional ITE Positioning57
- Directional BTE Positioning57
- Test Box Directional Procedure58
- Multicurve Procedure59
- Multicurve Results59
- Spectral Analysis in Multicurve60
- Battery Drain Test60
- Manual Control Procedure61
- Sound Level Meter Using Manual Control62
11 Sensory Loss Simulator64
- Sensory Loss Simulator Description64
- Sensory Loss Simulator Operation64
12 On-Ear Measures - Setup65
- External Sound-Field Speaker Setup65
- On-Ear Calibration Facts65
- Calibration of On-Ear Probe Microphone66
- Calibration Check for Probe Module67
- Max TM SPL Setup68
- ABR Nhl to Ehl Setup69
- Positioning the Client69
- Positioning the Probe Tube70
13 On-Ear Measures Screen Setup72
- On-Ear Single or Dual View72
- Graph, Table or 2Cc Target Format73
- SPL or HL Scale73
- Hide or Show On-Ear Curves73
14 On-Ear Instrument Measures75
- On-Ear Directional Test Overview75
- On-Ear Directional Testing75
- On-Ear Feedback Test76
- On-Ear Noise Reduction Test76
- On-Ear Manual Control77
- Sound Level Meter Using On-Ear Microphones78
15 Occlusion Effect Test80
- Occlusion Effect Measurement80
16 RECD Measurement81
- Calibration of RECD Transducer81
- Measure RECD82
- RECD Results83
- Ansi S3.46(2013) Recd84
- RECD Protocols84
- RECD Facts86
17 Insertion Gain87
- Insertion Gain in SPL87
- Insertion Gain in HL88
- Audiometric Data Entry88
- REUR Measurement Procedure89
- REAR Measurement Procedure90
- SII Calculation in Insertion Gain91
- CROS Fitting Using Insertion Gain91
18 Speechmap93
- Speechmap Facts93
- DSL 5.0 in Speechmap93
- DSL 5.0 Changes94
- NAL-NL1 in Speechmap94
- NAL-NL2 in Speechmap94
- Camfit in Speechmap95
- Using Speechmap95
- Speechmap Setup96
- Screen Tour - Unaided Screen97
- Screen Tour - Aided Screen98
- On-Ear or Test Box Mode98
- SII Calculation in Speechmap99
- Using Custom Stimuli in Speechmap99
- Creating WAV Files for Speechmap101
19 Speechmap Fitting Procedures103
- Assessment Data Entry103
- Assessment Data Choices104
- Fitting to Targets for Soft Speech105
- Fitting to Targets for Loud Sounds106
- Fitting to Targets for MID-Level Speech106
- Open Fittings in Speechmap107
- Verifying Frequency Compression/ Frequency-Lowering Hearing Instruments in Speechmap107
- FM Fitting and Verification109
- CROS Fitting in Speechmap110
- T-Loop Fitting and Verification in Speechmap111
20 Speechmap Technical Details114
- Speechmap Stimuli114
- Stimulus Levels114
- Microphone Location Effects115
- Deep Insertion Compensation116
- Speech Signal Analysis116
21 Viewport117
- Viewport Setup117
- Accessing Viewport Tests118
- Viewport Audibility Test118
- Viewport Test Box Directional Test119
- Viewport Test Box Feedback Test122
- Viewport On-Ear Feedback Test123
22 Troubleshooting125
- Self Test Failures125
- Initialize Function125
- Test Box High Distortion or Noise126
- Test Box Curves Inconsistent126
- Test Box Curves Differ from Specifications126
- Test Box Speaker Overdriven127
- No Test Box Reference MIC. Detected127
- Invalid Test Box Calibration127
- No On-Ear Ref. MIC. Detected127
- Invalid On-Ear Calibration128
- Sound-Field Speaker Overdriven128
- Invalid RECD Transducer Coupler Calibration128
- Invalid RECD Real Ear Measurement129
- Barcode Scanner Malfunction129
23 Technical Specifications132
24 Glossary135
25 References140
- Manufacturer Disclosure Statement for Medical Device Security143
26 Appendix 1143
- Audionote 2.1 VERIFIT and RM500SL Test Signals and Analysis146
27 Appendix 2146

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