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RM500SL
®
User's Guide Version 3.12
March 2015
Enter, Measure] if the target rule is NAL-NL2 or [Average, Enter, Measure] otherwise. The RECD is used to
convert entered HL data (thresholds and UCL's) to SPL values on the Speechmap screen (when Insert+Foam
or Insert+Mold is selected as HL Transducer) and to convert coupler SPL measured in the test box to
estimated ear canal SPL. The DSL child and NAL-NL2 fitting rules provide differing age-appropriate
average RECDs which will result in differing SPL thresholds. Estimated ear canal SPL always uses DSL data
when RECD set to average. If Measure is selected, you will be required to measure the client’s RECD values
or accept values from the RECD test. If Enter is selected, HA-2 or HA-1 RECD values may be entered
and are required at all 9 audiometric frequencies. When Enter or Measure is selected, you will
be required to specify the coupling in use between the RECD transducer and ear.
7. RECD Coupling: Select from [Earmold, Foam tip]. Specifies the coupling between the RECD transducer
and ear. A correction will be applied when entering HA-2 referenced RECD data and when measuring with
earmold.
8. Binaural: Select from [Yes, No]. Determines if fitting targets will be adjusted for binaural summation
effects. This is excluded for [DSL child] targets.
9. REDD: Real-ear-to-Dial Difference. [Average] (this cannot be changed). REDD values are similar for adults
and children. If Headphone is selected as the transducer type, adult average values will be used to transform
dB HL audiometry to dB SPL.
10. ABR nHL to eHL: Normalized HL to estimated HL conversion factors. Permitted only if [Transducer] =
ABR (nHL). Select from [Default, Enter]. If [Enter] is selected, an entry screen will be provided after
threshold data have been entered. Otherwise default factors will be used. These may be set to DSL values or
to values that you have entered in Setup. Note that, in some facilities, nHL is defined in such a way that it is
effectively eHL; in these cases, ABR (eHL) should be selected and no conversion factors will be applied. See
ABR nHL to eHL setup.
Fitting to targets for soft speech
See On-ear or Test box mode, Using Speechmap and Assessment data entry for setup and audiometric data entry.
1. Select [Audiometry] to choose the target method and enter audiometric data.
2. Select Test 1 and set stimulus to [Speech ISTS], [Speech-std(1)] or [Speech-std(2)] and level to 50. Elongated
+ symbols show the target range for 50 dB speech LTASS.
3. Adjust frequency shaping and gain for soft sounds so that the middle curve (the LTASS) falls within the
target range, especially between 500 - 4000 Hz. Press <Continue> to run the complete passage. Repeat as
necessary.
89
- Audioscan RM500SL 1
- User's Guide 3.12 1
- Table of Contents 2
- 1 About RM500SL 6
- SAFETY WARNINGS and NOTICES 7
- Environmental safety 7
- March 2015 10
- Electronic User’s Guide 11
- 2 Getting Started 13
- General care instructions 14
- Microphone care 15
- Battery pill use and care 15
- 3 General Operation 18
- Keypad keys 19
- Menus, lists and buttons 20
- Screen messages and Help 21
- Software updating 21
- 4 General Setup 22
- 5 Networking 24
- NOAH Service Port 25
- Testing the NOAH service port 26
- 6 Single computer connection 27
- Local printer setup 30
- Printing to USB memory 31
- Network printer setup 32
- Printing to a network file 32
- Storing and restoring data 33
- Data storage using NOAH 35
- 8 Test Box Measures - Setup 36
- 1996 or 2003 ANSI standard 37
- ANSI test frequencies 37
- Test box calibration facts 37
- 9 ANSI Hearing Aid Tests 42
- ANSI test results 44
- ANSI input-output curves 44
- ANSI telecoil terminology 45
- Telecoil test results 46
- 10 Other Test Box Measures 48
- Multicurve procedure 49
- Multicurve results 49
- Battery drain test 50
- Manual control procedure 50
- 11 Sensory loss simulator 53
- 12 On-Ear Measures - Setup 54
- Max TM SPL setup 56
- ABR nHL to eHL setup 57
- Positioning the client 57
- Positioning the probe tube 58
- SPL or HL scale 60
- Hide or show on-ear curves 61
- On-ear feedback test 62
- On-ear noise reduction test 62
- On-ear manual control 63
- 15 Occlusion Effect Test 65
- 16 RECD measurement 66
- Measure RECD 67
- RECD results 68
- ANSI S3.46(2013) RECD 69
- RECD protocols 69
- RECD facts 70
- 17 Insertion Gain 72
- Insertion gain in HL 73
- Audiometric data entry 73
- REUR measurement procedure 74
- REAR measurement procedure 75
- 18 Speechmap 77
- DSL 5.0 changes 78
- NAL-NL1 in Speechmap 78
- NAL-NL2 in Speechmap 78
- Camfit in Speechmap 79
- Using Speechmap 79
- Speechmap Setup 80
- Screen tour - aided screen 82
- On-ear or Test box mode 82
- Assessment data entry 87
- Assessment data choices 88
- Open fittings in Speechmap 91
- FM fitting and verification 93
- Speechmap stimuli 95
- Stimulus levels 95
- Microphone location effects 96
- Deep insertion compensation 97
- Speech signal analysis 97
- 21 Troubleshooting 98
- Test box speaker overdriven 99
- Invalid on-ear calibration 101
- Barcode scanner malfunction 101
- 22 Technical 104
- Specifications 104
- Sensory Loss Simulator 105
- 23 Glossary 107
- 24 References 112
- 25 Appendix 1 115
- 26 Appendix 2 118
- 1 Introduction 119
- 2 The test signals 119
- 2.1 Narrow-band signals 120
- 2.2 Broad-band signals 120
- 2.2.3 Real-speech signals 122
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