Additional Considerations - Fluke 2620A User Manual

Introduction ....................................................................................................... 5-3
Measurement Rate............................................................................................. 5-3
Advanced Trigger Mechanisms......................................................................... 5-3
Front Panel Trigger Control.......................................................................... 5-3
Computer Interface Trigger Control ............................................................. 5-3
Both External and Monitor Alarms Disabled (Type 0) ................................ 5-4
External Trigger Enabled (Type 1) ............................................................... 5-4
Monitor Alarm Enabled (Type 2) ................................................................. 5-6
Thermal Voltages .............................................................................................. 5-6
When Measuring Resistance or Temperature (RTD)........................................ 5-6
True RMS Measurements.................................................................................. 5-8
Effects of Internal Noise in AC Measurements ............................................ 5-8
Waveform Comparison (True RMS vs Average Responding) ..................... 5-8
Making Mixed Measurements........................................................................... 5-9
Using Shielded Wiring ...................................................................................... 5-11
General Rule ................................................................................................. 5-11
Alternate Suggestions ................................................................................... 5-11
Non-Isolated Sensor Configuration .......................................................... 5-11
Isolated and Shielded Sensor Configuration ............................................ 5-11
In More Detail ............................................................................................... 5-12

Additional Considerations

Title
Chapter 5
Page
5-1