National Instruments NI 4050 user manual Contents

© National Instruments Corporation vii NI 4050 User Manual
Contents
Chapter 1
Taking Measurements with the NI 4050
Cable and Probes...........................................................................................................1-1
Introduction to the VirtualBench-DMM Soft Front Panel.............................................1-3
Use the Soft Front Panel................................................................................................1-5
Measure DC and AC Voltage..........................................................................1-5
Measure 2-Wire Resistance.............................................................................1-6
Measure the Voltage Drop Across a Diode.....................................................1-7
Measure Current..............................................................................................1-8
Measure Temperature......................................................................................1-9
Chapter 2
NI 4050 Operation
Safety Instructions.........................................................................................................2-1
Measurement Fundamentals..........................................................................................2-2
Warm Up.........................................................................................................2-2
Selecting the Resolution..................................................................................2-2
Grounding........................................................................................................2-2
Voltage Measurements..................................................................................................2-2
DC Voltage......................................................................................................2-2
Input Ranges.....................................................................................2-3
Measurement Considerations............................................................2-3
Input Impedance.................................................................2-3
Thermal EMF.....................................................................2-4
Noise Rejection...................................................................2-4
AC Voltage......................................................................................................2-6
Input Ranges.....................................................................................2-7
Measurement Considerations............................................................2-7
AC Offset Voltage..............................................................2-7
Frequency Response...........................................................2-7
Resistance Measurements..............................................................................................2-8
2-Wire Resistance Measurements...................................................................2-8
Input Ranges.....................................................................................2-8
Continuity Measurements................................................................................2-9
Diode Measurements.....................................................................................................2-9