18
4.
Turn the tester on. Toggle the
POLARITY
switch if necessary so that the
NOR
indicator
is lit.
5.
Note that the Voltage meter may indicate that some residual voltage is present on the main
storage capacitor, even when the tester is first turned ON. This is due to inherent charging
of the internal capacitors. Pressing the
TRIGGER
switch will discharge the capacitors (be
sure not to touch the output and return leads when pressing the trigger switch).
6.
Adjust the digital
VOLTAGE
knob to the desire value: press the voltage knob to display
the voltage set point. This setting will blink for a few seconds on the front meter. Turn
Clockwise to increase the setting Voltage Setting Point.
7.
Push the yellow
CHARGE
button. Verify the red
TRIGGER
indicator is now lit.
8.
After the front panel meter indicates that the desired test voltage has been reached, push the
red
TRIGGER
button, and view the resulting impulse waveform on the measuring
instrument.
9.
Note that the peak amplitude of the measured output waveform is proportional to the
voltage that is read on the front panel of the MegaPulse.
10. Repeat steps 4 through 9, except this time toggle the
POLARITY
switch so that the
REV
indicator is lit. Note that the impulse waveform will now be a negative pulse, so it will
probably be necessary to make adjustments to the measuring instrument to get a proper
reading.
11. Turn the rear-panel power switch OFF.
