Fluke PM3370B user manual ADD Mathematics, Mathematical description, Result = S1 + S2

FUNCTION REFERENCE 5 - 5

ADD (MATHEMATICS)

Description:

The ADD function performs a point-to-point addition of two traces, related to the two ground levels (indicated as ‘-’). The result of the ADD function is a new trace in a different register. This trace can be scaled and positioned.

Scaling is the correction of the resultant trace to fit in the screen. The TRACK control adjusts scaling.

Vertical positioning is called offset. It offsets each sample in the resultant trace with a value so that the trace can be "moved" vertically. The Δ control adjusts the vertical positioning. The scale factor and the offset factor are displayed in the ‘MATH SCALE’ menu. Pressing the ‘autoscale’ softkey automatically selects the settings so the trace fits the screen.

When you add signals with different amplitude settings, the smaller signal is automatically adapted to the larger signal.

Either newly acquired traces or previously stored traces can be used as the sources for this process and each can be selected with the control. The resulting trace is automatically written in a register memory (m1 for math1 or m2 for math2).

To see the result more clearly, you can use the DISPLAY SOURCE on/off softkey to turn off the two source traces.

Mathematical description:

Result = S1 + S2