| ITEM |
NAME |
FUNCTION |
| 1 |
VOLTAGE Adjust Knob |
Adjust the voltage set point in the tester.
Turn Clockwise to increase the output voltage after the CHARGE button has been pressed.
Turn the knob fully counterclockwise (lowest voltage setting) before the start of each test, and afterthe end of each test. |
| 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 SwitchOption) |
| 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.
The meter will start to flash at 12210V to indicate that voltage is in the maximum limits.
If unit includes PC Interface and the Keyboard is locked, the display will show OFF when a button is pressed. |
| 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 |
LINE OUTPUT switch |
When switched to the ON position, 120V line voltage will be present on the output leads. |
| 12 |
EXTERNAL TRIGGER |
The External Trigger Signal on the front panel is approximately 13 volts. In order to catch the correct signal the oscilloscope trigger level must be set to at least 10 volts. |