Owner`s manual

MEASURING AN INSTANTANEOUS

VOLTAGE

You can use the ProbeScope to measure an AC sig-

nal’s instantaneous voltage at any given point on the

signal waveform.

1. Set the input coupling switch to

GND

2. Connect the

GROUND

(0 volt) wire to the signal

source’s ground or reference level.

3. Rotate the

Zero Level

to vertically position the

trace to a convenient line on the grid overlay.

Note

: The position on the grid overlay depends

on the polarity and amplitude of the input signal,

but should be chosen so the trace lies along one

of the major divisions on the grid overlay. If the

trace is widened by stray interference, ground the

probe body near the point being measured. The

trace position is the voltage reference line and all

voltage measurements are read in respect to this

line. (Do not adjust the vertical positioning control

after the reference is established.)

4. If it was necessary to ground the tip (see Step 3

note), remove the tip from the ground or reference

voltage. This readies the tip so you can use it to

make a measurement.

5. Set the input coupling switch to

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