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CR:811C
Cirrus Research CR:811C User Manual
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CR:800C Series Sound Le
vel Meter User Manual
Page 1
This manua
l, the so
ftware to wh
ich it r
elates, t
he
program code and drawings are all:
© Copyright Cirrus Research plc 1989-2008
User Manual for the
CR:800C Series
of Sound Level Meters
2
Table of Contents
Default Chapter
3
Table of Contents
3
1 Preface
5
Messages and Symbols
5
2 Introduction
6
Main Features
6
Measurement Functions
6
Broadband Measurement Mode
6
1:1 & 1:3 Octave Band Measurement Mode
7
Options & Accessories
7
3 Getting Started
8
How to
8
Quick Start
9
Unpacking and Checking the Sound Level Meter
13
Instruments Layout
14
Assembly
15
Switching on
17
Checking the Configuration of the Instrument
18
Calibration
21
Starting a Measurement
22
Displaying the Data During a Measurement
24
Pausing and Resetting a Measurement
25
Stopping the Measurement
25
Viewing the Stored Measurements
26
4 Configuring the Sound Level Meter
27
Keypad
27
Menu System
27
Measurement Mode
28
Measurement Duration
30
Measurement Auto Repeat
31
Measurement Auto Synchronise
33
Measurement Range
34
Instrument Setup
36
Display Resolution
38
5 Viewing and Downloading the Measurements
43
Recalling Stored Measurements
43
Checking & Clearing the Memory
45
Downloading Measurements to the Software
48
Software Installation
48
System Requirements
48
Installation Requirements
48
Connecting the Instrument to the PC
49
Understanding How the Measurements Are Stored
50
6 Maintenance & Care
52
7 Troubleshooting
53
Basics
53
Calibration
53
Measurements & Settings
54
Downloading Measurements
54
8 Glossary
55
9 Appendix 1 Specifications
58
Instrument Versions
58
Applicable Standards
58
Microphone
58
Microphone Preamplifier
58
Extension Cables
58
Time Weightings
58
Frequency Weightings
58
Amplitude Weighting
59
Measurement Range
59
Noise Floor (Typical)
59
Available Measurements
59
Frequency Bands (Nominal Frequencies)
60
Memory
60
Automatic Measurements
60
Display
60
Weight
60
Dimensions
60
Batteries
60
Battery Life
61
Environmental
61
External Connections
61
Output Cables
61
Software Support
61
Factory Options
61
10 Appendix 2 Acoustic Calibrators
62
Operation
62
Changing the Battery
64
Specification
65
Technical Information
66
Free Field Correction
67
11 Appendix 3 CE Certificate of Conformity
68
12 Warranty Information
69
13 Cirrus Research Offices
70
4
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Cirrus Research CR:811C Specifications
General
Brand
Cirrus Research
Model
CR:811C
Category
Measuring Instruments
Language
English
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