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APPLICATIONS
PROBE COMPENSATION
rection prior to measurement.
Correct
compensation
Bee
compensation
Insufficient
compensation
Fig. 16
TRACE ROTATION COMPENSATION
Rotation from a horizontal trace position can be the
cause of measurement errors.
Adjust the controls for a single display. Set the AC-
GND-DC switch to GND and TRIG MODE to AUTO. Ad-
just the * POSITION control such that the trace is over
the center horizontal graticule line. If the trace appears
to be rotated from horizontal, align it with the center
graticule line using the TRACE ROTATION
control locat-
ed on the front panel.
,
1. DC VOLTAGE MEASUREMENT
(1) Ordinary Measurement
To measure waveform DC level, carry out the following
operations:
1. Connect the signal to be measured to the INPUT jack.
For the channel which is selected by the vertical MODE
switch, set the AC-GND-DC switch to DC and adjust the
controls for normal sweep. Then adjust the VOLTS/DIV
and SWEEP TIME/DIV controls to the optimum settings
for measurement of the waveform.
The VARIABLE switch should be set to CAL.
2. Set the TRIG MODE switch to AUTO and AC-GND-DC
switch to GND. The trace displayed at this time is the
GND
level (reference line).
Using the * POSITION control, adjust the trace position
to the desired reference level position, making sure not
to disturb this setting once made.
@
When a 10:1 probe is used:
DC level = Vertical distance (div) x VOLTS/DIV setting x 10
@
With direct measurement
DC level = Vertical distance in divisions x (VOLTS/DIV
setting) x (probe attenuation ratio).
Measuring point adjusted to the center
vertical scale by <4» POSITION
Vertical
distance
Ground potential adjusted by
4 POSITION (reference line)
Fig. 17
[EXAMPLE]
Substituting the given values:
DC level =3.8 (div) x0.2(V) x 10=7.6 V
21
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