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RM500SL
®
User's Guide Version 3.12
March 2015
1 About RM500SL
This section describes the Audioscan RM500SL, provides contact, warranty and trademark information, safety
warnings and notices and instructions for accessing the electronic User’s Guide.
Note that the User's Guide may be viewed on the RM500SL at any time by pressing <Help> (For long Help
pages, use <Left/Right> (or mouse) to switch between the Help index and the Help page and arrows (or
mouse) to scroll through the page).
New in this software release
Software 3.12 introduces the following significant additions and changes:
1. NAL-NL2 prescription formula. For details, see 17. NAL-NL2 in Speechmap.
2. User-supplied test signals. For details see 17. Using custom stimuli in Speechmap
3. Improved audioscan updater. USB memory sticks left plugged in will not interfere with startup.
Product description
The RM500SL is a hearing aid analyzer intended to be used by hearing care professionals such as audiologists
and hearing aid specialists to verify the electro-acoustic performance of a hearing aid connected to a standard
earphone coupler or while worn on the ear of the end user. It consists of:
a) an integrated acoustically-treated test chamber which houses an optional battery substitute (1.3 volt supply),
loudspeaker (which doubles as a sound-field speaker), a reference microphone for controlling the signal from the
loudspeaker, and a standardized earphone coupler connected to a measuring microphone for the purpose of
measuring the sound level produced in the standard coupler by a hearing aid.
b) a flat-panel video display, power supply, signal generation, measurement and control electronics and a custom
keypad.
c) a real-ear measurement microphone assembly housing a reference microphone for controlling the signal from
the sound-field speaker and a probe microphone connected to a thin silicone tube which may be inserted into the
ear canal for the purpose of measuring the sound level in the ear canal produced by a hearing aid.
d) an optional miniature earphone used to measure the real-ear to coupler difference (RECD) useful in
estimating the sound level produced in an individual ear from measurements in the standard earphone coupler.
There is a connector for USB devices (flash drives, a QWERTY keyboard, mouse, printer, barcode scanner), a
LAN port, and two auxiliary audio output connectors (not supported in this version of software). Units with
serial number below A2051 have an RS232 serial port which is not supported in this version of software.
Electrical supply input requirement: 100 – 240 Vac 47 – 63 Hz 250VA
A hospital grade grounded outlet is required.
Associated items and supplies
SL-100 RECD Transducer (earphone) for measuring the real-ear to coupler difference
SL-110 Battery substitutes (pills) for measuring battery drain. Set of 4 (1-#10, 1-#312, 1-#13, 1-#675)
VA-120 Barcode scanner for reading barcoded audiometric data on printouts from Audioscan analyzers
6
- 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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