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D-0126050 rev 1 - 270+ Operating Manual
TABLE OF CONTENTS
1. INTRODUCTION 5
1.1. THANK YOU 5
1.2. INTENDED APPLICATIONS 5
1.3. CONTRAINDICATIONS 5
1.4. STANDARD AND OPTIONAL ACCESSORIES 6
1.5. WARNINGS 6
2. UNPACKING AND INSTALLATION 7
2.1. GENERAL 7
2.2. MARKINGS 7
2.3. SAFETY INSTRUCTIONS 8
2.3.1. General 8
2.3.2. Cautions – General 9
2.3.3. Environmental factors 10
2.3.4. Electrical and electrostatic safety 10
2.3.5. Electromagnetic compatibility (EMC) 10
2.3.6. Explosion hazards 11
2.3.7. Measuring accuracy 11
2.3.8. Miscellaneous 11
2.3.9. Use of equipment after transport and storage 11
2.3.10. Mains Supply Operation 12
2.4. CONNECTIONS 12
2.5. CONTROLS AND INDICATORS (BASE UNIT) 13
2.6. LIGHT INDICATORS 14
2.7. HARDWARE INSTALLATION 14
2.8. THE SANIBEL MPT-II PRINTER 15
2.8.1. Installing the sanibel MPT-II Printer 15
2.8.2. Switching the Printer on and off 15
2.8.3. Using the Printer 15
3. PRINCIPLES OF OPERATION 16
3.1. OTOSCOPIC EXAMINATION 16
3.2. PRINCIPALS OF PURE TONE AUDIOMETRY 16
3.3. PRINCIPALS OF SPEECH AUDIOMETRY 16
3.4. PRINCIPALS OF FREEFIELD AUDIOMETRY 16
4. USING THE 270+ 17
4.1. GENERAL PRECAUTIONS 17
4.2. SWITCHING THE INSTRUMENT ON AND OFF 17
4.3. SWITCHING HEADPHONES 17
4.4. OPERATING LANGUAGE 18
4.5. SYSTEM INFORMATION 18
4.6. FUNCTION BUTTONS 19
4.6.1. Presenting a tone 19
4.6.2. storing a Test point 19
4.6.3. Talkover and Talkback 19
4.6.4. Menu Operation 20
4.6.5. Clear (on-screen results) 20
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