Audioscan Verifit User Manual Page 50
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Verifit
®
User's Guide Version 3.12
May 2015
ANSI test loop test
ANSI S3.22 requires that the gain control be set to RTP (1996) or RTS (2003) before running this test. The
reference test gain (RTG) is required in order to calculate the STS (1996) or RTLS (2003). The easiest way to
meet both requirements is to run a [Linear] or [AGC] test before running this test. See ANSI 1996 Linear and
AGC tests; ANSI 2003 Linear and AGC tests
1. First, complete an ANSI [Linear] or [AGC] test.
2. Press <Tests>, then highlight and <PICK> [Test box measures]
3. Highlight and <PICK> [Telecoil].
4. Set the aid to ‘T’ (telecoil input).
5. Highlight and <PICK> [Start test loop test]. Setup instructions will be displayed.
6. Position the hearing instrument on the ‘T’ inscription on the test chamber floor vertically oriented as worn by
a seated individual as shown.
7. Without moving the hearing instrument, press <Continue> to run the SPL in a vertical magnetic field
(SPLIV) curve or press <Cancel> to abort the test.
If an RTG has been previously obtained, the TLS or RTLS will be shown.
Telecoil test results
50
- Audioscan Verifit 1
- User's Guide 3.12 1
- Table of Contents 2
- 1 About Verifit 6
- SAFETY WARNINGS and NOTICES 7
- Environmental safety 8
- May 2015 10
- Electronic User’s Guide 12
- 2 Getting Started 14
- Microphone connection 15
- General care instructions 16
- Microphone care 16
- Battery pill use and care 17
- Monitor headphones 18
- External peripherals 18
- 3 General Operation 20
- Keypad keys 21
- Menus, lists and buttons 22
- Screen messages and Help 22
- Software updating 23
- 4 General Setup 24
- 5 Networking 26
- NOAH Service Port 27
- Testing the NOAH service port 28
- 6 Single computer connection 29
- Local printer setup 33
- Printing to USB memory 33
- Network printer setup 34
- Printing to a network file 34
- Storing and restoring data 36
- Data storage using NOAH 37
- 8 Test Box Measures - Setup 38
- Format 39
- 1996 or 2003 ANSI standard 39
- ANSI test frequencies 40
- Test box calibration facts 40
- 9 ANSI Hearing Aid Tests 45
- ANSI test results 47
- ANSI input-output curves 47
- ANSI telecoil terminology 48
- ANSI test loop test 50
- Telecoil test results 50
- 10 Other Test Box Measures 52
- Feedback suppression test 53
- Directional function test 54
- Directional ITE positioning 55
- Directional BTE positioning 55
- Multicurve procedure 57
- Multicurve results 57
- Battery drain test 58
- Manual control procedure 59
- 11 Sensory loss simulator 62
- 12 On-Ear Measures - Setup 63
- Max TM SPL setup 66
- ABR nHL to eHL setup 67
- Positioning the client 67
- Positioning the probe tube 68
- On-ear single or dual view 70
- SPL or HL scale 71
- Hide or show on-ear curves 71
- On-ear directional testing 73
- On-ear feedback test 74
- On-ear noise reduction test 74
- On-ear manual control 75
- 15 Occlusion Effect Test 78
- 16 RECD measurement 79
- Measure RECD 80
- RECD results 81
- ANSI S3.46(2013) RECD 82
- RECD protocols 82
- RECD facts 84
- 17 Insertion Gain 85
- Insertion gain in HL 86
- Audiometric data entry 86
- REUR measurement procedure 87
- REAR measurement procedure 88
- 18 Speechmap 91
- DSL 5.0 changes 92
- NAL-NL1 in Speechmap 92
- NAL-NL2 in Speechmap 92
- Camfit in Speechmap 93
- Using Speechmap 93
- Speechmap Setup 94
- Screen tour - aided screen 96
- On-ear or Test box mode 96
- Assessment data entry 101
- Assessment data choices 102
- Open fittings in Speechmap 105
- FM fitting and verification 107
- CROS fitting in Speechmap 108
- Stimulus levels 112
- Speechmap stimuli 112
- Microphone location effects 113
- Deep insertion compensation 114
- Speech signal analysis 114
- 21 Viewport 115
- Accessing Viewport tests 116
- Viewport Audibility test 116
- 22 Troubleshooting 123
- Test box speaker overdriven 125
- Invalid on-ear calibration 126
- Barcode scanner malfunction 126
- 23 Technical 129
- Specifications 129
- Sensory Loss Simulator 130
- 24 Glossary 132
- 25 References 137
- 26 Appendix 1 140
- 27 Appendix 2 143
- 1 Introduction 144
- 2 The test signals 144
- 2.1 Narrow-band signals 145
- 2.2 Broad-band signals 145
- 2.2.3 Real-speech signals 147
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