Kenwood CS-4125 User Manual

Measuring Direct Current (DC) Voltage
The oscilloscope's vertical amplification is provided by a direct current amplifier
circuit characterized by excellent stability. By switching the AC-GND-DC
control to the DC setting direct current voltage can be measured.
1. Apply the signal to the INPUT terminal. Work the VOLTS/DIV and SWEEP
TIME/DIV controls to display the waveform at an easy to see size. Also
adjust the LEVEL control if necessary.
2. Set thejTRIGGERING|MODE control to AUTO, and then set AC-GND-DC to
GND. The trace will be displayed on the CRT screen. This trace will become
the ground potential. Work the ^ POSITION control to bring the trace in
line with one of the horizontal graduation lines. Usually signals with positive
potential are lined up at the 0 % graduation and signals of negative potential
at the 100 % graduation. Once lined up, the trace's position will become
the reference potential, so do not touch the ^ POSITION control during the
measurement process.
3. Set the AC-GND-DC control at DC. The signal will be displayed on the CRT
screen with the direct current component intact. If in this case either the
VOLTS/DIV or reference potential setting is inappropriate, the waveform
may disappear from the display screen. Make sure to check these settings.
4. Measure the potential using the procedure for measuring the voltage between
two points. The potential sign will be plus if above the reference and minus
if below the reference.
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Point to be measured lined up with the center
vertical scale using the-*•POSITION control
Ground potential reference lined up at 0%
using the * POSITION control
Figure 11. DC Voltage Measurement
5. If there is only signal to be measured, apply it to CHI, and work the
CH2 v POSITION control so that CH2 displays the ground potential. If the
MaaUWfll MODE control is set at either ALT or CHOP after this adjustment
is made, you will be certain of the ground potential throughout the proce-
dure. However, make certain that the ground potentials of both channels are
always the same.

Kenwood CS-4125 Specifications

General

Brand	Kenwood
Model	CS-4125
Category	Test Equipment
Language	English