Owner`s manual

3. Set the input coupling switch to

GND

4. Connect the

GROUND

(0 volt) wire to the signal

source’s ground or reference level.

5. Rotate

Zero Level

to vertically position the trace to

a convenient line on the grid overlay.

Caution

: To avoid an overload when measuring

AC, make sure the zero line is centered vertically

on the grid overlay.

Note

: If the trace is widened by stray interference,

ground the probe body near the point being mea-

sured. 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 estab-

lished.)

6. If it was necessary to ground the tip (see Step 5

note), remove the tip from the ground or reference

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

make a measurement.

7. Set the input coupling selector to

(depending on the voltage you want to measure).

8. Set the input voltage range to the appropriate

10V

, or

100V

range scale.

Cautions

• Always set the selector to the highest range

when you are not sure of the voltage to be

measured.

• Never exceed 100 Volts AC (peak-to-peak) or

DC between the measured test point and

ground.

22-310.fm Page 49 Friday, August 6, 1999 12:26 PM