用户手册 — AudioQuest M-27

目录

• INTRODUCTION

  3
• M-27 SIMPLIFIED OPERATING INSTRUCTIONS

  5
• Control Keys

  5
• Sound Level Meter Keys

  6
• Dosimeter Keys

  6
• Time Keys

  7
• Event Keys

  7
• Procedure to Accumulate Event Data

  7
• Setting the Clock

  8
• Recording the Calibration Level

  8
• Using a Printer

  9
• Dumping Raw Data

  11
• Changing Printer Parameters

  11
• SPECIFICATIONS

  11
• GENERAL DESCRIPTION

  12
• PRINCIPLES OF OPERATION

  13
• General

  13
• Weighting Characteristics

  13
• Microcomputer Modes

  14
• Formulas and Definitions

  16
• TESTING AND CALIBRATION

  17
• Battery Test

  17
• Battery Replacement

  17
• Microphone Replacement

  18
• Calibration and Maintenance

  18
• Daily Calibration

  18
• Altitude Corrections

  19
• OPERATING PROCEDURE

  19
• As a Personal Noise Dosimeter

  19
• As an Area Monitor

  20
• As a Survey or Event Monitor

  21
• Effects of Operator's Presence

  22
• Use with Windscreen

  22
• Using a Printer

  23
• Connections to Printer

  24
• Sample Printouts

  24
• Memory Map

  30
• Editing Printout

  31
• Printer Setup

  32
• EXTENDING BATTERY LIFE

  33
• INTERNAL SWITCHES

  34
• Switch Positions

  36
• Setting Internal Switches

  38
• Code Decoding

  41
• TROUBLESHOOTING

  42
• INTERPRETING RESULTS

  43
• Use of Lavg and TWA

  43
• Estimating TWA from Lavg

  44
• Accuracy of Readings

  44
• Hints and Good Practices

  44
• Considerations of Measurement and Accuracy

  46
• ACCESSORIES

  47
• QUEST SERVICE AND WARRANTY POLICY

  48