Table Of Contents - BRUEL & KJAER 4292 Instructions And Applications

CONTENTS
1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1. FrontandTopPanels .................. . ...... 4
2.2. Rear Pane I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3. 1. Measurement Arrangement . . . . . . . . . . . . . . . . . . . . . 7
3.2. Calibration of Measur€tnent System . . . . . . . . . . . . . . 9
3.3. Vibration Measurements ....................... 12
4. DESCRIPTION ....................................... 14
4.1. Calibrator Section ............................ 14
Wien Bridge Oscillator ........................ 14
Driver Amplifier ............................. 15
Vibration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2. Preamplifier Section . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Input Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
0-20 dB Amplifier ........................... 16
Integration Networks . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.3. Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5. CHARACTERISTICS .................................. 21
5.1. Calibrator Section ............................ 21
Frequency Characteristics ...................... 21
Cal ibi·ation Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.2. Preamplifier Section . ............. . .... . ...... 22
Input Characteristics .......................... 22
Low Frequency Characteristics .................. 23
High Frequency Characteristics ................. 25
Frequency and Phase Characteristic of Integration
Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Output Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 27
Distortion .................................. 29
Noise ........................... . ......... 29
6. SPECIFICATIONS .................................... 31