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RM500SL
®
User's Guide Version 3.12
March 2015
How to Avoid Undesirable Side Effects
During the development of the hearing aid analyzer, Audioscan performed a rigorous Risk Assessment to
identify any undesirable side effects that a user could be exposed to during the use of the RM500SL, and
incorporated numerous risk reduction design elements into the RM500SL to minimize the risk to users and
patients.
Following are the actions which a user should take to ensure that these risk control measures continue to be
effective
Loud Sounds:
The RM500SL is designed to produce sound pressure levels as high as 85 dB at the probe reference microphone.
Exposure to these levels for more than 7 hours can produce hearing damage. When such levels are amplified by
a hearing aid, the level in the ear canal will be determined by the settings of the hearing aid but may reach levels
that can produce hearing damage in less than 30 seconds. To avoid this possibility,
1. hearing aids should be adjusted to limit sound pressure levels to safe levels
2. the maximum TM SPL setting (see Max TM SPL Setup) should be used to terminate tests if an unsafe level
is detected in the ear canal
3. test levels should be limited to 70 dB SPL except when necessary to verify the limiting levels of the hearing
aid, in which case, the test should not last longer than 15 seconds
4. be aware of the test signal and patient reaction during a test and be prepared to respond to any sign of
discomfort by reducing the SPL setting, switching off the equipment or the hearing aid, or removing the
patient from the area.
When using the equipment to measure the Real-Ear to Coupler Difference in small ear canals, it is possible to
induce a hearing loss if the test is allowed to continue for more than 1 hour. Since accurate results can be
obtained in less than 10 seconds, this possibility should never occur in normal practice.
Power and Grounding:
This product contains numerous safety features to ensure that the probability of electrical shock is as low as
reasonably practicable. In order to ensure that all of the safety features work optimally you must ensure that the
power cord is plugged into a grounded outlet. Any line-powered peripherals connected to the RM500SL must
comply with UL/IEC 60601-1 OR comply with UL or IEC or ISO safety standards for such equipment, AND a)
be operated from an isolating transformer complying with UL/IEC 60601-1, OR b) be kept at least 6 feet (1.8m)
from the patient.
Ear Infection:
Probe tubes or RECD foam tips should not be re-used on another patient. There is a possibility of transferring an
ear infection to the other patient. Probe tubes and RECD foam tips are for single-patient use only. Do not
attempt to clean or re-use.
Ear Canal Discomfort:
An otoscopic examination should always be performed prior to inserting a probe tube into the ear canal to ensure
that it is healthy and free of obstructions. Care is needed when inserting probe tubes into the ear canal. Although
the probe tubes are made of soft, flexible material specially designed for this application, it is possible to scrape
the ear canal or touch the eardrum causing brief discomfort. You should carefully follow the instructions in
“Positioning the probe tube” section of this User’s Guide.
12
- 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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