User`s guide

Creating a DC voltage testing mask

A mask can be used to test the proper voltage of a DC signal. The shape of

the mask is very simple: just two horizontal straight lines. By varying the

Volts/div knob and the position setting, the same DC voltage testing mask can

be used to test any DC signals. To create the DC testing mask, you must

have the testing limits. The testing limits are the upper voltage limit and the

lower voltage limit. To maximize the accuracy, the two limit lines should

cover as much vertical resolution as possible. Due to the calibrated vertical

verniers and vertical position of the HP 54600-series oscilloscopes, the

Volts/div can be expanded in small increments and remain calibrated. An

example mask is shown below.

Example mask for testing the voltage of a DC signal

Figure 13

Solutions

Creating a DC voltage testing mask