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Trademarks

Neutrik

 and 

Speakon 

are registered trademarks of Neutrik AG.

Copyright 

©

 2001 – 2006, Brüel & Kjær Sound & Vibration Measurement A/S

All rights reserved. No part of this publication may be reproduced or distributed in any form,
or by any means, without prior written consent from Brüel & Kjær Sound & Vibration Meas-
urement A/S, Nærum, Denmark

Safety Considerations

This apparatus has been designed and tested in accordance with IEC 61010 – 1 and
EN 61010 – 1 

Safety Requirements for Electrical Equipment for Measurement, Control

and Laboratory Use

. This manual contains information and warnings which must be fol-

lowed to ensure safe operation and to retain the apparatus in safe condition. Special note
should be made of the following:

Safety Symbols

The apparatus will be marked with this symbol when it is important that you refer to the
associated warning statements given in the manual.

  Protective Earth Terminal  

 Hazardous Voltage

Explosion Hazard

The equipment is not designed to be used in potentially explosive environments. It should not
be operated in the presence of flammable liquids or gases.

Warnings

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 carried out only by trained service
personnel.

• Do not dispose of electronic equipment as unsorted municipal waste
• It is your responsibility to contribute to a clean and healthy environment

by using the appropriate local return and collection systems

• Hazardous substances in electronic equipment may have detrimental effects

on the environment and human health

• The symbol shown to the left indicates that separate collection systems

must be used for any discarded equipment marked with that symbol

• Waste electrical and electronic equipment may be returned to your local

Brüel & Kjær representative or to Brüel & Kjær Headquarters for disposal

Summary of Contents for 2719

Page 1: ...5 83 05 Ireland 353 1 807 4083 Italy 39 0257 68061 Japan 81 3 5715 1612 Netherlands 31 318 55 9290 Norway 47 66 77 11 55 Poland 48 22 816 75 56 Portugal 351 21 41 69 040 Republic of Korea 82 2 3473 06...

Page 2: ...BE 1660 12 May 2006 Power Amplifier Type 2719 User Manual...

Page 3: ...plosion Hazard The equipment is not designed to be used in potentially explosive environments It should not be operated in the presence of flammable liquids or gases Warnings Whenever it is likely tha...

Page 4: ...oduction 1 CHAPTER 2 Controls 3 Front Panel 3 Back Panel 4 CHAPTER 3 Operation 5 Preliminary 5 System Checks and Connections 5 CHAPTER 4 Characteristics 11 Signal Inputs 11 CHAPTER 5 Specifications 17...

Page 5: ......

Page 6: ...e from DC to 100 kHz The rated AC output is 180 VA into a 0 8 exciter or resistive load in the frequency range DC to 15 kHz 0 5 dB The maximum voltage gain is 40 dB Harmonic content of the output is v...

Page 7: ...Power Amplifier Type 2719 User Manual 2...

Page 8: ...is switched On The Voltage or Current Mode LED indicator lights green showing the output mode The Interlock LED indicator lights red when the interlock circuit is activated The 0 or 180 LED indicator...

Page 9: ...impedance is 10 k Full output is produced by a 2 4 V RMS input signal Voltage Monitor BNC socket providing output of the amplifier voltage waveform including DC component for display on an oscillosco...

Page 10: ...is designed to fit into 19 standard rack system It may be used free standing on its four rubber feet however when fitted in a instrumentation rack the rubber feet must be removed System Checks and Con...

Page 11: ...e amplifier unit is aligned with the appropriate voltage printed on the selector Fuse Check and Replacement The mains fuse and fuse holder are integrated in the voltage selector It can be released usi...

Page 12: ...ther This is done automatically through the screens of the input and output cables used to interconnect the instruments 2 If instruments equipped with a mains socket protective earth terminal are empl...

Page 13: ...exciter is exceeded causing the vibration table to knock against its end stops reduce the generator output voltage to a lower level in order to resume operation For frequency sweep vibration testing...

Page 14: ...Reset and make the necessary adjustments Normal operation can then be resumed by returning Variable Gain dB to the position used for test If a shut down is caused by an internal fault in the amplifier...

Page 15: ...Power Amplifier Type 2719 User Manual 10...

Page 16: ...s capacitive coupled giving a 0 5 dB lower limiting frequency of approximately 15 Hz The DC signal input is direct coupled enabling a DC offset voltage to be applied for centring vibration exciter tab...

Page 17: ...e exciter applications as well as to multiple exciter applications at low frequencies where it is important that the exciters have the same motion In Current Mode high impedance feedback is proportion...

Page 18: ...btained using exciters with a nominal load impedance of 0 8 For other exciter load impedances the maximum output rating is as shown in Fig 4 3 This is valid at frequencies from 5 Hz to 15 kHz At other...

Page 19: ...pedance valid at frequencies from 40 Hz to 10 kHz 200 Maximum Output Power VA Vibration Exciter Type 4808 Vibration Exciter Type 4809 Current Power Voltage Power Current Voltage 180 160 140 120 100 80...

Page 20: ...nput socket used and the setting of the V C Mode switch as shown by the response curves for small signals given in Fig 4 4 Fig 4 4 Frequency response in Voltage Mode of Type 2719 for power output leve...

Page 21: ...s can be attributed to the generous amount of feedback applied and the use of a direct coupled input Fig 4 5 Typical harmonic distortion percentage curves for Voltage Mode and Current Mode output impe...

Page 22: ...TPUT VOLTAGE CAPACITY 12 V RMS DC to 15 kHz via 4 pin Neutrik Speakon plug OUTPUT CURRENT CAPACITY 7 5 A RMS at or below 5 Hz 15 A RMS 40 Hz to 10 kHz 12 A RMS at 15 kHz FREQUENCY RANGE Full Capacity...

Page 23: ...rrent true RMS adjustable limit 1 to 15 A RMS Power Transistor Temperature Heat Sink Temperature Output Signal Distortion no shut down OTHER FEATURES Electronic peak current limiting POWER REQUIREMENT...

Page 24: ...it against unintended operation For repair contact your local Br el Kj r representative Under no circumstances should repair be at tempted by persons not qualified in the service of electronic instrum...

Page 25: ...Power Amplifier Type 2719 User Manual 20...

Page 26: ...5 83 05 Ireland 353 1 807 4083 Italy 39 0257 68061 Japan 81 3 5715 1612 Netherlands 31 318 55 9290 Norway 47 66 77 11 55 Poland 48 22 816 75 56 Portugal 351 21 41 69 040 Republic of Korea 82 2 3473 06...

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