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Mediator 2238
BRUEL & KJAER Mediator 2238 Service Manual
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Februar
y
, 2002
BI
5043
–
13
Brüel
&
Kjær
2238 Mediator Integrating Sound Level Meter
Service Manual
2238 Mediator
Integrating Sound Level Meter
Service Manual
2
4
Table of Contents
Table of Contents
5
Introduction
7
About 2238 Mediator
8
Standards
8
Basic Configuration
8
How Mediator Works
8
Detectors
9
Application Programs
9
Changing Application
10
Installing, Upgrading, or Removing Applications
10
Specifications
10
Filter Set
10
Upgrading Filter Set
11
Service
11
Service Notes
11
Exchange Scheme
11
How to Order an Entire 2238 as an FRP
11
Mechanical Spare Parts
12
Repair
12
Types of Repair
12
Replacement of Entire Unit as FRP
12
Special Tools and Equipment
12
About Calibration
13
Checking Procedure
15
Pushkey Definitions
16
Introduction
17
Results Not Achieved
17
Special Tools and Equipment
17
Preparation
17
Checking Procedure
17
Visual Inspection of the Microphone
18
Outputs - Analog Output
18
Frequency Weighting
19
Overload
20
Measuring Range - Attenuator Accuracy
20
Detectors - Amplitude Linearity of RMS and Peak Detectors
21
Noise
22
External Power Supply
23
Crest Factor Test (Crest Factor = 3)
24
Tone Burst Test
24
2238 Mediator Integrating Sound Level Meter
25
Octave Filter Upgrade
25
Initial Calibration
26
Mechanical Parts
27
Dismantling Kit WZ 0065
29
Dismantling
29
How to Open and Lock the SMD Connectors for Ribbon Cables
30
Filter Set Upgrade
30
Reassembly
30
Service Parts List
31
Field Replaceable Parts
32
Index
33
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BRUEL & KJAER Mediator 2238 Specifications
General
Brand
BRUEL & KJAER
Model
Mediator 2238
Category
Measuring Instruments
Language
English
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