BRUEL & KJAER NEXUS 2693 User Manual

Name: BRUEL & KJAER NEXUS 2693
Brand: BRUEL & KJAER
Rating: 4 (1 reviews)

66 pages

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BI 5042−12

Technical

Documentation

The NEXUS

™

Range of

Conditioning Amplifiers

Types 2690, 2691, 2692 and 2693

Service Manual

Table of Contents5
General Information7
Edition Number8
Safety8
Instrument Versions8
Service Policy9
Exchange Scheme9
Field Replaceable Parts10
Repair of Pcbs11
Repair of Mechanical Parts11
Repair Procedure11
Calibration and Testing12
Special Tools and Equipment12
Front Panel13
Back Panel14
EMC Immunity16
Service Note17
General18
Checking Procedure19
Introduction20
Results Not Achieved20
Special Tools and Equipment20
Preparation20
Self-Test Procedure20
Manual Checking Procedure20
Checking Charge Channels ZX 269221
Checking Calibrated Output21
Checking Low-Pass Filters23
Checking High-Pass Filters24
Optional Filters25
Inherent Noise25
Checking Test Signals26
Overload27
Checking Microphone Channels ZX 2690 and Sound Intensity Channels ZX 269128
Checking Calibrated Output28
Checking Low-Pass Filters30
Checking High-Pass and A-Weighting Filters31
Optional Filters32
Inherent Noise33
Checking Test Signals33
Overload35
Checking Deltatron Channels ZX 269337
Checking Calibrated Output37
Checking Low-Pass Filters38
Checking High-Pass Filters39
Optional Filters40
Inherent Noise41
Checking Deltatron Supply Current41
Checking Test Signals42
Overload42
Checking Optional Single and Double Integration Filters ZE 078844
Checking Optional A-, B-, C- and D-Weighting Filters ZE 079445
Theory of Operation47
Introduction48
Functional Description48
Input Channel Modules48
Block Diagrams48
Electrical Diagrams51
FRP Policy52
Mechanical Assembly53
Dismantling the Display Unit54
Dismantling the Motherboard (ZE 0785)55
Dismantling a Channel56
Dismantling the Main Processor Board57
Dismantling the Rear Circuit Board (ZE 0786)57
Servicing the NEXUS Using ATAC59
Introduction60
Main Menu60
Service 269X Menu61
Connecting the NEXUS62
Correction Factors63
Adjust Polarization Voltage64
Adjust Frequency Response65
Set Configuration66

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BRUEL & KJAER NEXUS 2693 Specifications

General

Brand	BRUEL & KJAER
Model	NEXUS 2693
Category	Amplifier
Language	English

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