Agilent Technologies U1602B - Subtraction (CH1 - CH2, CH2 - CH1)

3 Using the Scope Functions
76 Agilent U1602B/U1604B User’s and Service Guide
Subtraction (CH1 – CH2, CH2 – CH1)
When you select CH1 – CH2, the channel 2 voltage values are subtracted
from channel 1 voltage values, point by point. Conversely, if the CH2
–
CH1 is selected, the channel 1 voltage values are subtracted from channel
1 voltage values and the result is displayed in math waveform. This
function is useful for comparison of the two waveforms and to make a
differential measurement. For adjusting the math vertical position, turn
the rotary switch to offset the position.
Figure 3-38 Subtraction signal at channel 2 from channel 1
NOTE
If the waveforms from channel 1 and channel 2 have different vertical scale factor, the math
waveform vertical scale is automatically set to the higher sensitivity of the vertical scale
factor.