Measurement Tutorial - Agilent Technologies L34410A User Manual

Agilent 34410A/11A/L4411A 6½ Digit Multimeter
User's Guide
4

Measurement Tutorial

The Agilent 34410A/11A/L4411A multimeter is capable of
making highly accurate measurements. In order to achieve the
greatest accuracy, you must take the necessary steps to
eliminate potential measurement errors. This chapter describes
common errors found in measurements and gives suggestions to
help you avoid these errors.
DC Measurement Considerations
Thermal EMF Errors
Loading Errors (dc volts)
Noise Rejection 102
Rejecting Power-Line Noise Voltages
Common Mode Rejection (CMR)
Noise Caused by Magnetic Loops
Noise Caused by Ground Loops
Resistance Measurement Considerations
4-Wire Ohms Measurements
Removing Test Lead Resistance Errors
Minimizing Power Dissipation Effects
Errors in High Resistance Measurements
True RMS AC Measurements
True RMS Accuracy and High-Frequency Signal Content
Estimating High-Frequency (Out-of-Band) Error
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