BRUEL & KJAER 2145 Manual de instrucciones

Brüel & Kjær

7/6-'89

Technical

Documentation

English BB0877–14

Order Tracking Analyzer

Type 2145

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Vol. 1: Operation

March 2006

Brüel & Kjær BB0877–14

Order Tracking Analyzer

Type 2145

From software version 1.20

Revision

0 – 2 Brüel & KjærOrder Tracking Analyzer Type 2145

User Manual Vol.1

Safety Considerations

This apparatus has been designed and tested in accordance with

IEC Publication 348, Safety Requirements for Electronic Measuring

Apparatus (see specifications), and has been supplied in safe condi-

tion. This User Manual contains information and warnings which

must be followed to ensure safe operation and to retain the appara-

tus in safe condition. Special note should be made of the following:

Powering the Apparatus

Before each use of the apparatus verify that it is set to match the

available mains supply voltage and that the correct fuse is inserted.

Safety Symbols

The apparatus will be marked with this symbol when it is

important to refer to the associated warning statements given in

this User Manual.

Warnings

●Switch off all power to equipment before connecting or disconnecting

their digital interface. Failure to do so could damage the equipment.

●Whenever it is likely that the correct function or operating safety of

the apparatus has been impaired, it must be made inoperative and be

secured against unintended operation.

●Any adjustment maintenance and repair of the open apparatus under

voltage must be avoided as far as possible and, if unavoidable, must

be made only by trained service personnel.

Chassis

Terminal Safety Earth

Terminal Hazardous

Voltage

Trademarks

IBM is the international trade mark for International Business Ma-

chines Corp.

or distributed in any form, or by any means, without prior consent

in writing from Brüel & Kjær A/S, Nærum, Denmark.

BB0877–14 0 – 3

Order Tracking Analyzer Type 2145

User Manual Vol.1

Contents

1. Introduction ............................................................................ 1–1

1.1 About the Type 2145...................................................1 – 2

1.2 About the Type 7668 Software ...................................1 – 2

1.3 About this User Guide ................................................1 – 3

2. Installation and Maintenance ........................................ 2–1

2.1 Power Supply ..............................................................2 – 2

2.2 Grounding Considerations..........................................2 – 6

2.3 Cleaning the Disk Drive .............................................2 – 8

2.4 Installing the Software Key .......................................2 – 9

3. Controls and Connections ................................................ 3–1

3.1 Front Panel..................................................................3 – 2

3.2 Rear Panel ...................................................................3 – 5

4. Getting Started ..................................................................... 4–1

4.1 Switching On...............................................................4 – 2

4.2 General Measurement Procedure ..............................4 – 4

4.3 The Menu and Help Page System..............................4 – 5

4.4 Changing Parameters in a Set-up............................4 – 10

5. Main Menu – Page 1 ........................................................... 5–1

5.1 Introduction.................................................................5 – 3

5.2 Analysis Set-up ...........................................................5 – 4

5.3 Input ............................................................................5 – 8

5.4 Calibration ..................................................................5 – 9

5.5 Tacho Input and Tacho Parameters ........................5 – 19

0 – 4 Brüel & KjærOrder Tracking Analyzer Type 2145

User Manual Vol.1

5.6 Setting up Tacho Parameters ..................................5 – 23

5.7 Averaging .................................................................. 5 – 33

5.8 Interval Averaging.................................................... 5 – 35

6. Main Menu – Page 2 ........................................................... 6–1

6.1 Introduction ................................................................ 6 – 3

6.2 Display Modes.............................................................6 – 4

6.3 Text.............................................................................. 6 – 8

6.4 Hold ........................................................................... 6 – 12

6.5 Trigger Multimode.................................................... 6 – 15

6.6 Spectrum Weighting.................................................6 – 32

6.7 Memory......................................................................6 – 37

6.8 I/O Interface.............................................................. 6 – 43

7. Main Menu – Page 3 ........................................................... 7–1

7.1 Introduction ................................................................ 7 – 2

7.2 Preselected Set-up ...................................................... 7 – 2

7.3 Autosequence ..............................................................7 – 4

7.4 Real-time Clock......................................................... 7 – 13

7.5 Back Lighting............................................................7 – 17

7.6 Applications...............................................................7 – 19

8. Analysis Functions .............................................................. 8–1

8.1 Introduction ................................................................ 8 – 3

8.2 Autospectrum Analysis .............................................. 8 – 5

8.3 Order Analysis ............................................................8 – 6

8.4 Broadband Channels ................................................ 8 – 10

8.5 Choosing an Analogue Input Filter ......................... 8 – 11

8.6 Tacho Parameters.....................................................8 – 12

8.7 DC Channels .............................................................8 – 17

8.8 Digital Channel.........................................................8 – 17

8.9 Overload Indicators ..................................................8 – 18

8.10 Summary of Analysis Functions..............................8 – 20

BB0877–14 0 – 5

Order Tracking Analyzer Type 2145

User Manual Vol.1

9. Data Acquisition ................................................................... 9–1

9.1 Introduction.................................................................9 – 2

9.2 Making a Single Measurement ..................................9 – 4

9.3 Trigger Multimode Uses.............................................9 – 5

10. Measurement Mode ........................................................... 10–1

10.1 Measurement Mode Display.....................................10 – 2

10.2 Measurement Mode Pages......................................10 – 14

10.3 Display Modes .........................................................10 – 18

11. Appendix ................................................................................ 11–1

11.1 Personal Computer (PC) Utilities ............................ 11– 2

11.2 Using TEXT7668.EXE .............................................. 11– 2

11.3 Using CONV7668.EXE ............................................. 11– 5

11.4 Remote Control ZH 0611........................................... 11– 8

12. Error Messages ................................................................... 12–1

12.1 Error Messages ......................................................... 12–2

12.2 Provoked Errors and Other Messages ..................... 12–5

13. Specifications ....................................................................... 13–1

13.1 Specifications 2145 ................................................... 13–2

13.2 Filter Characteristics................................................ 13–8

14. Service and Repair ............................................................. 14–1

Index

0 – 6 Brüel & KjærOrder Tracking Analyzer Type 2145

User Manual Vol.1

BB0877–14 1 – 1

Order Tracking Analyzer Type 2145

User Manual Vol.1

Chapter 1

Introduction

1.1 About the Type 2145........................................................... 1 – 2

1.2 About the Type 7668 Software....................................... 1 – 2

1.3 About this User Guide........................................................ 1 – 3

Chapter 1 – Introduction

About the Type 2145

1 – 2 Brüel & KjærOrder Tracking Analyzer Type 2145

User Manual Vol.1

1.1 About the Type 2145

The Analyzer

The Order Tracking Analyzer Type 2145 is a portable, digital-

filter, frequency analyzer which can also perform order analyses

for acoustics and vibration measurements. Its light weight and

water-repellent cabinet make it especially well-suited for use in

the field. Yet its measuring capabilities easily match those of

laboratory instruments. The analyzer features real-time opera-

tion across its working frequency ranges which are doubled for

single channel operation. It has two versatile tacho trigger inputs

which give the 2145 a tremendous advantage over conventional

analyzers when it comes to analysing motor vehicle sounds and

vibrations. Its is capable of providing, in real-time, 20-order

analysis simultaneously with spectral data in 1/1-, 1

/3 - or 1/12

octave bands.

Menus and Help

The analyzer is operated by means of user-interactive menus.

These enable you to become quickly familiar with the use of the

analyzer. Access to a system of on-screen help pages provides

you with information about the use of the menus at any time

and in any place.

Data Storage

A large internal non-volatile memory together with back-up disk

storage facilities makes the analyzer a powerful data-gathering

device. The IEEE–488 and RS–232 interfaces allow data-process-

ing and external control.

1.2 About the Type 7668 Software

The Type 7668 is the software for the Order Tracking Analyzer

Type 2145. It comes on a single 31/2″disk and is loaded using

the analyzer’s built-in disk drive. A software key must be in-

stalled in the analyzer to allow the program to be run. The

analyzer is already fitted with this key on delivery. It is also

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