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BRUEL & KJAER Manuals
Measuring Instruments
3347
Instructions and applications
BRUEL & KJAER 3347 Instructions And Applications
Real time third octave analyzer
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Contents
Table of Contents
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Table of Contents
Table of Contents
1 Introduction
2 Controls
Front Panel of Frequency Analyzer 2130
Rear Panel of Frequency Analyzer 2130
Front Panel of Control and Display Unit 4710
Rear Panel of Control and Display Unit 4710
3 Operation
Preliminary Adjustments
Calibration for Sound Measurements
Using Pistonphone or Sound Level Calibrator
Using the Built-In Reference Voltage
Measurement of Sound
Calibration for Vibration Measurements
Using Accelerometer Calibrator 4291
Using the Built-In Reference Voltage
Measurement of Vibration
Calibration for Voltage Measurements
Voltage Measurements
Input Voltages up to 300 Volts RMS
Input Voltages from 300 to 1000 Volts RMS
Insert Voltage Calibration
Using Internal Reference Voltage
Using External Generator
Use of the Type 2130 Alone
As a Conventional Frequency Analyzer
As a Parallel Analyzer
Description
Frequency Analyzer Type 2130
Input Circuit and First Amplifier
Reference Oscillator
Input Overload Indicator
Filters and Weighting Networks
Third Octave Filters
Frequency Weighting Networks
RMS Detection and Averaging
Time Constant
Averaging Time and Stat~Stical Errors
Ripple from Third Octave Detectors
Ripple from Broad Band Detectors
Storage
FET Gate
Output Amplifier and Meter Circuit
Output Amplifiers and Attenuator
Meter Function Switch
Control and Display Unit Type 4710
Computer and Analogue to Digital Converter
Logic Control
Digital Output
Nixie Tube Display
Interface with Computer
5 Analogue Readout
General
Level Recorder- Multiplexer Output
Level Recorder- Selected Filter Output
AC Recording
DC Recording
X- y Recording
Remote Control of Analogue Readout
Readout Start
Auto Store
Channel Switching
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Instructions
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and Applications
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Real Time Third Octave
Analyzer Type 3347
An extremely versatile hybrid
parallel analyzer. Accurate analyses
can be presented visually on a
large screen display, in digital form
to on-line or off-line auxiliaries,
or to a wide range of analogue
recording devices.
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