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RM500SL
®
User's Guide Version 3.12
March 2015
The OSPL90 curve, the HFA (or SPA) and peak value of this curve, the frequency of the peak, the HFA (or
SPA) full-on gain are determined at full-on gain setting. The response curve, frequency range, Reference Test
Gain, battery drain, equivalent input noise, distortion, attack and release times are determined at RTS.
These changes result in more consistent values for reference test gain, equivalent input noise and attack and
release time. See 1996 or 2003 ANSI standard, 8.2: ANSI S3.22-1996 facts and 8.5: ANSI 2003 Linear and AGC
tests.
ANSI 1996 Linear and AGC tests
1. Press <Tests>, then highlight and <PICK> [Test box measures], then highlight and <PICK> [Linear] or
[AGC].
2. Highlight and <PICK> [Start test] and follow the test setup instructions which are presented.
3. Refer to Test Box Measures – Setup, Coupling the hearing instrument, Positioning the hearing instrument and
Battery pill use and care to prepare the instrument for testing.
4. Turn the instrument ON.
5. Set the gain control (manual or programmable) to maximum with all other controls set to provide the widest
frequency response, greatest gain and highest maximum output. AGC controls and/or programmable
parameters should be set as designated by the manufacturer.
6. Press <Continue> to run the test or <Cancel> to abort the test. Note that, if required, the RM500SL will
pause during the test to request that the volume control be adjusted to the Reference Test Position (RTP).
Open the test box if necessary and, without moving the hearing instrument, adjust the user gain control until
the large vertical arrow on the screen prompt disappears. Press <Continue> to resume the test.
If you are unsure which test sequence to run, try [AGC] first. If attack and release times are all near zero, the
instrument is probably linear.
ANSI 2003 Linear and AGC tests
1. Press <Tests>, then highlight and <PICK> [Test box measures], then highlight and <PICK> [Linear] or
[AGC].
2. Highlight and <PICK> [Start test] and follow the test setup instructions which are presented.
3. Refer to Test Box Measures – Setup, Coupling the hearing instrument, Positioning the hearing instrument and
Battery pill use and care to prepare the instrument for testing.
4. Turn the instrument ON.
5. Set the gain control (manual or programmable) to maximum with all other controls set to provide the widest
frequency response, greatest gain and highest maximum output. AGC controls and/or programmable
parameters should be set to minimize AGC action (AGC off or threshold high, compression ratio close to 1).
6. Press <Continue> to run the test or press <Cancel> to abort the test. Note that, if required, the Verifit will
pause during the test to request that the gain control be adjusted to the Reference Test Setting (RTS). If
necessary, open the HIT chamber and, without moving the hearing instrument, adjust the gain control until
the large vertical arrow on the screen prompt disappears. Press <Continue> to resume the test.
During the AGC test, the RM500SL will pause to request that AGC controls or programmable parameters be set
for maximum AGC effect. If the manufacturer does not provide settings to produce maximum AGC effect, use
43
- 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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