2 Making Measurements
50 Keysight U1251B and U1252B User’s and Service Guide
Understanding the Measurement Instructions
When making measurements, follow the numerical steps labelled in the diagrams.
Refer to Table 2-1 below for a description of the steps.
Measuring Voltage
The U1251B and U1252B offer true-RMS readings for AC measurements that are
accurate for sine waves, square waves, triangle waves, staircase waves, and other
waveforms without any DC offset.
For AC with DC offset, use AC + DC measurement on or rotary
switch location. Applies only to U1252B.
Table 2-1 Numerical steps descriptions
No. Instructions
Turn the rotary switch to the measurement option shown in the diagram
Connect the test leads into the input terminals shown in the diagram
Probe the test points
Read the results on the display
WARNING
Ensure that the terminal connections are correct for that particular
measurement before proceeding with the measurement. To avoid damaging
the device, do not exceed the input limit.