12
ITEM
NAME
FUNCTION
1
VOLTAGE
Adjust Knob
Adjust the digital voltage set point in the tester.
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 before pressing
CHARGE
button.
2
POLARITY
switch
Toggles the output pulse polarity from Normal to Reverse, Normal for positive and Reverse for Negative, The pulse will appear on the Output jack relative
to the return jack
The polarity switch only operates when the
CHARGE
indicator is lit and the voltage on the display meter is less than 180V. The polarity is Normal when
the
NOR
indicator is lit and, Reverse when the
REV
indicator is lid.
3
NOR REV
indicator
Indicates the state of the Output Polarity switch.
NOR
indicates Normal (Positive) position.
REV
indicates Reverse (Negative) position.
4
CHARGE
switch
Starts the charge process of the tester capacitor.
The
CHARGE
indicator will turn off after the
CHARGE
switch is pressed, and the
TRIGGER
indicator will turn on.
The charge process will stop after 2 minutes if the
TRIGGER
button is not pressed.
5
CHARGE
indicator
This Yellow indicator is lit to show that pressing the
CHARGE
switch is the next logical step in a test sequence.
CHARGE
indicator is lit when the tester is turn ON an after pressing
TRIGGER
button.
CHARGE
indicator will go out after pressing
CHARGE
button.
CHARGE
and
TRIGGER
Indicators will be blinking if the Interlock Switch is open. (Only testers with Interlock Switch Option)
6
TRIGGER
switch
Triggers the output impulse waveform.
The impulse waveform will appear across the output leads.
7
TRIGGER
indicator
This Red indicator is lit to show that the tester can be trigger.
TRIGGER
indicator is lit for 2 minutes after the
CHARGE
button is pressed.
TRIGGER
indicator will go out after pressing
TRIGGER
button.
TRIGGER
and
CHARGE
Indicators will be blinking if the Interlock Switch is open (Only testers with Interlock Switch Option)
TRIGGER
indicator will blink at when the Voltage. This effect will remain on until the
TRIGGER
switch is pressed. (Only testers with PC Interface
option)
8
VOLTAGE
meter
Displays the output voltage set point.
The voltage reading will increase from zero to the voltage set point when the CHARGE button is pressed. 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. Note that the peak amplitude of the measured output waveform is proportional to
the voltage that is read of the front panel of the MegaPulse, but it will always be somewhat lower. This is because the meter on the MegaPulse is
measuring the voltage on the main impulse storage capacitor. This voltage will intentionally dissipate to some extent before reaching the output leads.
9
OUTPUT
jack
The impulse waveform appears on the
OUTPUT
jack, referenced to the
RETURN
jack. When the
POLARITY
switch is in the Normal position (
NOR
indicator is lit) the output will be a positive pulse. When the
POLARITY
switch is in the Reverse position (
REV
indicator is lit) the output will be a
negative pulse.
10
RETURN
jack
This is the return for the impulse waveform. This jack is referenced to the chassis of the MegaPulse, and is referenced to earth ground as long as the
MegaPulse is properly grounded. Even though this jack is referenced to ground, it should be treated as hazardous whenever the MegaPulse is turned ON.
11
OUTPUT
switch
Used to select the waveshaping network components that are specified for each nominal output voltage. Refer to
Table 1
for additional details. (optional,
just in case that multiple output was ordered)
Table 2. Controls, Indicators, Connectors – MegaPulse 1.2x50-12.3PF-1 500ohm 0.5J Front Panel
Summary of Contents for MegaPulse 1.2x50-12.3PF-1
Page 1: ...MegaPulse IMPULSE TESTER 1 2x50 12 3PF 1 500ohm 0 5J Instruction Manual...
Page 3: ......
Page 5: ...1...
Page 12: ...8 Figure 5 Test Voltages and Tolerance from IEC 60255 5...
Page 29: ...25 Figure A 5 Breakdown as the voltage is rising...
Page 30: ...26 Figure A 6 Dieletric breakdown immediately after Vpeak...
Page 31: ...27 Figure A 7 Dielectric breakdown after Vpeak delayed breakdown...