Model 3550 Programmable LCR Meter Instruction Manual c
Table of Contents
I INSTRUMENT DESCRIPTION............................................................................1-1
Instrument Description ........................................................................... 1-1
Feature Overview ................................................................................... 1-1
3550 Options and Accessories .................................................................. 1-4
Performance Specifications ...................................................................... 1-5
Table 1.1 – Model 3550 Measurement Range Limits ............................... 1-5
Table 1.2 – Model 3550 Measurement Frequencies................................. 1-7
Table 1.3 – Model 3550 Measurement Amplitudes .................................. 1-7
Table 1.4 – Model 3550 Amplitude Accuracies ....................................... 1-8
Table 1.5 – Model 3550 Measurement Ranges ....................................... 1-8
Table 1.6 – Typical Analog Measurement Times ..................................... 1-9
Table 1.7a – Absolute Comparator Operation......................................... 1-11
Table 1.7b – Percentage Comparator Operation ..................................... 1-11
Table 1.8 – Numeric Displays and Annunciators ..................................... 1-11
Formulas and Measurement Accuracy........................................................ 1-13
Table 1.9 – Series and Parallel Equivalent Circuit Measurements .............. 1-14
II PREPARATION FOR USE ..................................................................................2-1
Unpacking and Inspection........................................................................ 2-2
Safety Information and Precautions .......................................................... 2-2
Servicing Safety Summary ...................................................................... 2-4
Line Voltage and Fuse Selection ............................................................... 2-5
III QUICK START INSTRUCTIONS .........................................................................3-1
Power the Unit ....................................................................................... 3-2
Instrument Settings................................................................................ 3-2
Table 3.1 – Factory Default Settings .................................................... 3-2
Table 3.2 – Control Command Summary............................................... 3-3
Table 3.3 – Shift Function Summary .................................................... 3-4
Instrument Setup for Basic Measurements ................................................. 3-5
Table 3.4 – Settings Summary ............................................................ 3-5
Setting the Absolute Comparator.............................................................. 3-6
Setting the Percent Comparator ............................................................... 3-7
IV OPERATING INSTRUCTIONS............................................................................4-1
Basic Operation...................................................................................... 4-2
Default Parameters................................................................................. 4-2
Precautions ........................................................................................... 4-2
Measurement Tips .................................................................................. 4-2
Making Measurements that are Sensitive to Voltage and Current.............. 4-2
Measuring Earth Grounded Test Pieces ................................................. 4-2
Measurement Circuit Modes ................................................................ 4-3
Table 4.1 – Relationship Between Series and Parallel Equivalent Circuits ... 4-3
Negative Capacitance or Inductance Readings ....................................... 4-4
Zero Correction of Parasitic Impedance ................................................ 4-4
Table 4.2 – Short and Open Null Connections ........................................ 4-4