Compliance West MegaPulse 1.2x50/8x20-2PF-HR User manual

Instruction Manual

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Dear Customer:
Congratulations! Compliance West USA is proud to present you with your
MegaPulse 1.2x50/8x20-2PF-HR 2/12 ohm Impulse Tester. Your instrument
features a groundbreaking logic-controlled circuit design and ergonomic front
panel and represents the latest in high voltage impulse testing.
To fully appreciate all the features of your new instrument, we suggest that you take
a few moments to review this manual. Compliance West USA stands by your
instrument with a full one-year warranty. If the need arises, please don't hesitate to
call on us.
Thank you for your trust and confidence.
Rev 3, March, 2019

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Table of Contents
Section 1.................................................................................................................................................... 2
An Introduction to Impulse Testing with the MegaPulse PF series tester................................... 2
Safety Precautions......................................................................................................... 2
Test Personnel............................................................................................................... 2
Testing Area.................................................................................................................. 2
Safety Techniques......................................................................................................... 3
Safety Markings............................................................................................................ 3
Using the MegaPulse Impulse Tester............................................................................ 4
Section 2.................................................................................................................................................... 5
Getting Started............................................................................................................................. 5
Unpacking and Inspection............................................................................................. 5
Product Package for MegaPulse 1.2x50/8x20-2PF-HR Tester..................................... 5
Returning the Instrument .............................................................................................. 5
AC Line Voltage Requirements.................................................................................... 5
Fuse Replacement ......................................................................................................... 6
Section 3.................................................................................................................................................... 7
Specifications and Tolerances..................................................................................................... 7
Waveform Tolerances................................................................................................... 7
Section 4.................................................................................................................................................... 8
Controls and Indicators ............................................................................................................... 8
Front Panel Features...................................................................................................... 8
Figure 1. Front Panel Features and Control.................................................... 8
Rear Panel Features....................................................................................................... 9
Figure 2. Rear Panel Features and Controls.................................................... 9
Section 5.................................................................................................................................................... 10
Operating Instructions................................................................................................................. 10
External Interlock.......................................................................................................... 10
Front Keyboard and Voltage Knob Enable................................................................... 10
Discharging Residual Voltage....................................................................................... 10
Polarity Pulse Selection ................................................................................................ 11
Voltage Set Point Adjustment....................................................................................... 11
Charge and Trigger a Pulse........................................................................................... 11
Pulse Verification Procedure......................................................................................... 12
Figure 3. Waveform Measurement Setup. ...................................................... 12
Section 6.................................................................................................................................................... 13
Maintenance and Calibration....................................................................................................... 13
Introduction................................................................................................................... 13
Service Information....................................................................................................... 13
General Maintenance .................................................................................................... 13
Cleaning........................................................................................................................ 13
Calibration Information................................................................................................. 13
Voltage Stop Disable / Keyboard Enable by Keyboard. ............................................... 14
Section 7.................................................................................................................................................... 15
Technical Assistance................................................................................................................... 15

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Section 1
An Introduction to Impulse Testing with the MegaPulse PF series tester
The impulse test is designed to simulate impulse surges which occur in everyday life due to nearby lightning strikes,
switching transients, and other high-frequency faults on the power distribution network. Impulse testing is the
fundamental method for empirical verification of the adequacy of insulation. Other methods of ensuring adequate
insulation (AC or DC Dielectric Withstand testing, measurement of over-surface creep age, through-air clearance, or
distance-through-insulation) are all extrapolated from the results of impulse testing. The impulse test is performed to
ensure that the insulation in question will be able to function properly when subjected to similar impulse surges in the
field.
Safety Precautions
The impulse withstand test can generate voltages in excess of 2000V peak at potentially lethal current levels. Currents
of as little as 5mA at 120 volts can cause death; the MegaPulse can deliver currents of more than 3000 Amps peak for
very short time duration. The potential for serious injury or death exists and personnel should be aware when they
conduct this test.
Test Personnel
Personnel require special training to conduct the impulse test. They should understand electrical fundamentals clearly
and be aware that high voltage is adept and creative at completing a path to ground. Instructions should include a
warning against any metal jewelry. Operators should not allow others in the testing area, especially when tests are
being conducted. Organization is to be stressed. The operator should keep the area free of unused leads and equipment.
Testing Area
The area used for conducting the impulse test should be as remote as possible from normal production line activities.
Only personnel conducting the test should be allowed in the area, and it should be taped or roped off to preclude casual
entry by other employees. In addition, the area should be marked "WARNING - HIGH VOLTAGE TESTING" or the
equivalent to warn others of the nature of the testing taking place.
The bench being used should be non-conductive, and any exposed metal parts should be tied together and grounded.
If a conductive surface must be used, it should be grounded. Because of sparking during an impulse test failure, it is
not safe to conduct impulse testing in combustible atmospheres.
It is imperative that a good ground be provided to the MegaPulse tester. Before connecting the equipment, ensure that
the building wiring provides a low-resistance ground. If the MegaPulse tester is used on a high-resistance grounding
circuit, dangerous high voltages may be present to the operator. In addition, the power to the Testing Area should be
provided with an easily reached shutoff switch which can be actuated by personnel outside the Area if needed.
CAUTION: Plug on power cord is disconnect device. The power to the Testing Area should be provided with an
easily reached shutoff switch which can be actuated by personnel outside the area if needed.

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Safety Techniques
The high voltage circuit of the MegaPulse 1.2x50/8x20-2PF-HR 2/12 ohm can be shut off at any time by turning OFF
the rear power switch. Always press TRIGGER to discharge the tester before turning OFF.
The MegaPulse tester is provided with a digital VOLTAGE ADJUST knob on the front panel. This voltage setting
should always confirm by pressing the VOLTAGE ADJUST knob before starting any testing.
The MegaPulse tester is provided with a CHARGE switch that is in the unarmed "Standby" setting when the tester is
first turned ON. When the yellow CHARGE button is lit, the tester will not provide high voltage until the CHARGE
Button and the TRIGGER Button have been pressed in order. To prevent inadvertent operation, the operator should
be instructed not to press the CHARGE Button until the test is ready.
The MegaPulse tester has been designed for one-touch operation with the right hand or via PC TestMinder. The
equipment under test should be connected to the MegaPulse tester and then left alone by the operator. After the
operator is clear of the Tester and the equipment under test, the operator should turn the rear-panel power switch to
ON. For Manual Operation press the Voltage Knob and set the desired voltage, then press CHARGE Button, after
charge stops at set voltage operator can press the TRIGGER Button, with his right hand. This will allow the greatest
separation between the operator and the test being conducted. Note that the CHARGE process will stop after 2 minutes
if the TRIGGER button is not pressed.
The MegaPulse tester is designed to bleed the high voltage away after the test has concluded. In order to ensure that
any voltage present in the equipment being tested has been completely bled away, the operator should not unplug the
equipment under test from the MegaPulse until the front panel meter reads a safe level (20 volts or less). Pressing the
TRIGGER button before disconnecting main power (or turning the equipment off) will ensure that the internal
capacitors are discharged as much as possible, however, the tester connects a Safety discharge network to main
capacitor to bleed the capacitor when is turned off or loss of power occurs.
Safety Markings

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Using the MegaPulse Impulse Tester
The impulse test involves high voltage and caution should be exercised when using the tester. The RETURN lead is
referenced to building ground when properly connected. However, both the OUTPUT and RETURN leads must
always be treated as Hazardous whenever the power switch of the MegaPulse is in the ON position.
The MegaPulse impulse tester generates the impulse waveform only; it does not determine Passing or Failing results.
It is the operator’s responsibility to monitor the output waveform and determine Passing or Failing results. In
monitoring the impulse waveform, consider the following points: The Impulse waveform is high voltage and high
frequency (short duration). Always ensure that the measuring instrument (usually an oscilloscope with a high-voltage
probe) is rated for the voltage involved, and that the frequency response of the instrument and probe can measure the
output waveform of the MegaPulse Impulse Tester. A measuring instrument or probe with a low frequency response
will result in erroneous readings that could be mis-read.
Pressing the POLARITY switch on the front panel can change the polarity of the output waveform. The polarity is
Normal when the NOR indicator is lit. In this case, the high voltage will appear on the OUTPUT as a positive pulse
relative to the RETURN jack. When the polarity switch is in the Reverse position (REV indicator is lit), the high
voltage will appear on the OUTPUT as a negative pulse relative to the RETURN jack. The polarity switch only
operates when the CHARGE LED is lit, i.e. the output is not charged.
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, 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. Therefore, it is important to measure the peak amplitude of the output waveform
and adjust the output of the MegaPulse accordingly.
Determination of Passing and Failing results can prove difficult. To obtain the most accurate results, it is generally
necessary to perform multiple impulse tests on a few different test samples (that have adequate insulation to pass the
impulse test). Take note of the impulse waveshape, amplitude, and duration. Also note how much variance there is
in the waveshape from test to test. Also (if possible), perform impulse testing on some test samples that are known to
have inadequate (or damaged) insulation. Take note of the impulse waveshape, amplitude, and duration, when an
insulation breakdown occurs.

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Section 2
Getting Started
This section contains information for the unpacking, inspection, preparation for use and storage of your Compliance
West product.
Unpacking and Inspection
Your Tester is shipped in a special protective container that should prevent damage to the instrument during shipping.
Check the shipping order against the contents of the container and report any damage or short shipment to Compliance
West USA. Please save the shipping carton and packing material for the carrier’s inspection. Our customer support
department will assist you in the repair or replacement of your instrument. Please do not return your product without
first notifying us and receiving an RMA (return material authorization) number. To receive an RMA number, please
contact our customer support department at (1-800-748-6224).
Product Package for MegaPulse 1.2x50/8x20-2PF-HR Tester
Description
Part Number
MegaPulse
1.2x50/8x20-2PF-HR 2/12Ω
MegaPulse Tester
00-MP1.2x50-8x20-2PF HR
User Manual
Manual (Qty 1)
High Voltage Test Lead, Red
HVLR (Qty 2)
High Voltage Test Lead, Black
HVLB (Qty 2)
18 AWG AC Power Cord
70-101
Returning the Instrument
When it’s necessary to return the instrument for servicing or calibration, repackage the instrument in its original
container, please include all accessories and test leads. Indicate the nature of the problem or type of service needed.
Also, please mark the container as “FRAGILE” to insure proper handling.
If you do not have the original packaging materials, please follow these guidelines:
•Wrap the instrument in a bubble pack or similar foam including all the included cables.
•Use a strong double-wall container that is made for shipping instrumentation.
•Use a layer of shock absorbing material 70 to 100mm (3 to 4 inch) thick around all sides of the instrument. Protect
the control panel with cardboard.
•Seal the container securely.
•Mark the container as “FRAGILE” to insure proper handling.
•Please contact Compliance West USA (1-800-748-6224) to inform about the service for your instrument.
AC Line Voltage Requirements
AC line voltage requirements for your Tester are noted on the rear panel of the instrument. Do not connect the
instrument to a different voltage source. The cord packaged with your MegaPulse Tester is for use in the United
States. If another power cord must be used, the cord must be rated for the maximum current noted on the rear panel.
It must also meet the requirements of IEC 227 or IEC 245, and mains cords that are certified or approved by any
recognized national test house are regarded as meeting this requirement.

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Fuse Replacement
There is a user-replaceable fuse (F1) located on the rear panel of the instrument. It is located behind a door in the
Power Inlet-Power Switch-Fuse Holder device. The fuse rating is noted on the rear panel. Do not attempt to replace
it with a fuse of any other rating.
Use the following procedure to replace the fuse F1:
1. Turn the power switch to the OFF position.
2. Unplug the instrument from the source of supply.
3. Remove the power inlet cord from the instrument.
4. Using a small screwdriver, pry open the fuse holder door.
5. Replace the fuse with a new one of the correct rating.
6. Replace the fuse holder door and power inlet cord.

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Section 3
Specifications and Tolerances
MegaPulse 1.2x50/8x20-2PF-HR complies with IEC 61000-4-5. Capable of generating up to 2000V and 1000A. The
tester is designed with high-resolution charging steps of 0.2V in the range of 5-200V and 2V in the range of 201-
2000V.
Compatible with Testminder and Multiplexer for use with a Source Meter and Oscilloscope for a complete testing
setup.
Specifications and tolerances for the MegaPulse 1.2x50/8x20-2PF-HR Tester are the following:
The equipment has the following characteristics:
•Tester duty cycle: 1 pulse every 20s max.
•Output Impedance: 2 ohms and 12 ohms.
•Output Impedance Selector: Front Panel Switch.
•Resolution 10-200V: 0.1V.
•Resolution 200V-2000V: 1V.
•Safety: Interlock with discharge network.
•Weight: 43 lbs approximated.
•Dimensions: 17” Wide x 17” Depth x 11” Height.
Waveform Tolerances
Table 1 Tester Waveform Tolerances
Parameter
Output
Specification
Tolerance
Comments
Open Circuit Voltage Peak
2 & 12Ω
5V –2000V
+/-10%
From 0 to peak
Open Circuit Voltage Duration
2 & 12Ω
50 µs
+/-20%
Time to half value
Open Circuit Rise time
2 & 12Ω
1.2 µs
+/-30%
From (30% - 90%) x 1.67
Short Circuit Current Peak
2Ω
2.5A –1000A
+/-10%
At the 2ohm output
Short Circuit Current Duration
2Ω
20µs
+/-20%
Time to half value
Short Circuit Rise Time
2Ω
8µs
+/-20%
From (10% - 90%) x 1.25

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Section 4
Controls and Indicators
Before using your Tester, take a few minutes to become familiar with the use of its controls, indicators and
connectors on the front and rear panel.
Front Panel Features
The front panel features are shown in Figure 1 and are described in Table 2.
Figure 1. Front Panel Features and Control
Table 2 Front Panel Features and Controls
#
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, NOR for positive and REV 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.
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.
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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.
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TRIGGER
switch
Triggers the output impulse waveform.
The impulse waveform will appear across the output leads.

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Rear Panel Features
The rear panel features of the MegaPulse are shown in Figure 2 and described in Table 2.
Figure 2. Rear Panel Features and Controls
Table 3. Rear Panel Features and Controls
ITEM
NAME
FUNCTION
1
Inlet Module
Is where the main fuse is located. Replace fuse when necessary, always use a fuse with the same ratings
mentioned in the rear label and in this manual.
Power Switch
The Power Switch is used to turn the tester ON and OFF. It is recommended to fully discharge the main
capacitor before turning off the tester.
2
Electrical Ratings
Indicates the Volts and Fuse rating.
3
Interlock
Emergency Stop
Close: Enables the tester buttons for operation.
Open: Stops any process in the tester, disables the buttons and internally discharges the main capacitor.
The TRIGGER and CHARGE Indicators will be blinking when interlock is open.
4
TestMinder
Allows the communication between the tester and computer interface; a RS-232 to USB.
5
Fans
The Fans on the rear panel maintain the air flow to cool down the tester.
Fans are ON whenever the tester is ON.
CAUTION: When installing this equipment, make sure not to cover the fans.
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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.
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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.
The Display is measuring the voltage on the main impulse storage capacitor
If keyboard is locked, the display will show OFF when a button is pressed.
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IMPEDANCE
selector
This switch allows the user the select the desired output impedance, 2 or 12 ohms.
The impedance should be selected before pressing charge or before starting a secuence via TestMinder PC control.
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OUTPUT
jacks
The impulse waveform appears on the OUTPUT jack, referenced to the RETURN jack. When the POLARITY
switch is in the Normal position (NOR) the output will be a positive pulse. When the POLARITY switch is in
the Reverse position (REV) the output will be a negative pulse. Use both jacks at the same time to reduce leads
inductance.
RETURN
jacks
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.
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E-STOP
Emergency Stop Button, when pressed a internal discharge network drains the main storage capacitor and
disables the front panel buttons. To resume operation turn E-Stop clockwise.

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Section 5
Operating Instructions
This section contains operating instructions for the Compliance West USA MegaPulse 1.2x50/8x20-2PF-HR Tester.
•In case of trouble, the test can be immediately terminated at any time by turning the rear-panel power switch
to the OFF position.
•Before the test can commence, the unit must be armed by pressing the CHARGE Button. The test will not
begin until the TRIGGER Button is pushed.
•Voltage is discharged by a resistor bank within the MegaPulse tester upon test completion. Discharge
progress is shown on the front panel meter.
Your tester is warranted for a period of one year upon shipment of the instrument to the original purchaser.
External Interlock
The external interlock is a two-position terminal block located on the rear panel. When the External Interlock is open:
•TRIGGER and CHARGE lights will be blinking.
•The front keyboard will be disabled.
•If the unit is connected to a computer with the TestMinder software, the interlock status will be
shown on the computer, condition that will also disable polarity changes, charge, and trigger
conditions.
When the Interlock is closed, it enables all normal operations of the MegaPulse features.
Front Keyboard and Voltage Knob Enable
If the MegaPulse 1.2x50/8x20-2PF-HR Tester has disabled the keyboard or Voltage Knob, it is possible to enable
them by using the next keyboard sequence:
1. Turn OFF the MegaPulse P tester.
2. Press and hold the TRIGGER and NOR-REV buttons.
3. Turn ON the MegaPulse tester.
4. Wait until the display shows rESE.
5. Release the TRIGGER and NOR-REV buttons.
Discharging Residual Voltage
Note that the Voltage meter may indicate that some residual voltage is present on the main storage capacitor, even
when the MegaPulse tester is first turned ON. This is due to inherent charging of the internal capacitors. The following
procedure will explain how to discharge a remaining voltage stored on the main internal capacitor.
CAUTION
High voltage generated by the MegaPulse tester is exposed during this test. A risk of shock exists.
Exercise care when using the MegaPulse unit.
1. Turn the rear-panel Power Switch OFF.
2. Disconnect the high voltage cables from the output’s connector.
3. Turn the rear-panel Power Switch ON.
4. Press the red TRIGGER button to discharge the main capacitor into the internal resistor of the MegaPulse
unit.
5. Turn the rear-panel Power Switch OFF.

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Polarity Pulse Selection
NOTE
If the red Trigger light is lit or more than 200V remains on the internal capacitor, the polarity pulse
selection will be automatically blocked for safety reasons.
1. Turn the rear-panel Power Switch ON. Positive polarity always is set by default after the unit is turned ON.
2. Press the POLARITY switch button to toggle between positive and negative.
Voltage Set Point Adjustment
NOTE
If the front display shows the word “Off” when trying the adjustment, it means the front Voltage knob has
been disabled by the Testminder software. See section “Front Keyboard and Voltage Knob Enable”
To adjust the Voltage Set Point:
1. Press the VOLTAGE Adjust knob one time to enable the adjustment mode, digits for thousands and hundreds
will start blinking for a few seconds.
2. While the digits are still blinking, turn the VOLTAGE Adjust knob, clockwise or counterclockwise, to change
the value of the blinking digits.
3. While digits are still blinking, press the VOLTAGE Adjust knob again and the tens and unit digits will start
blinking for a few seconds.
4. While the digits are blinking, turn the VOLTAGE Adjust knob, clockwise or counterclockwise, to change
the value of the blinking digits.
5. After a few seconds without any change on the VOLTAGE Adjust knob, the desired output voltage will be
set.
Charge and Trigger a Pulse
The following procedure will explain how to generate a high voltage pulse with the MegaPulse unit. The MegaPulse
1.2x50/8x20-2PF-HR Tester is capable to maintain a specific voltage charge selected by the Voltage Set Point.
CAUTION
High voltage generated by the MegaPulse tester is exposed during this test. A risk of shock exists.
Exercise care when using the MegaPulse unit.
1. Confirm the Voltage Set Point by pressing the VOLTAGE Adjust Knob, the current setting will blink for a
few seconds on the front meter.
2. If a different Voltage Set Point is needed it, refer to section “Voltage Set Point Adjustment.”
3. Push the yellow CHARGE button to start charging the internal high voltage capacitor and wait until the front
meter reaches value set on Steps 1 or 2. Verify that the red TRIGGER indicator is now lit.
4. Once the desired voltage is reached, press the red TRIGGER button to deliver the high voltage pulse (be
sure not to touch the output and return leads when pressing the trigger switch).
5. Turn the rear-panel Power Switch OFF.

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Pulse Verification Procedure
The following procedure will verify that the high voltage pulse is properly generated by the MegaPulse tester. We
recommend that this procedure be conducted periodically to ensure proper operation of the tester.
The following items are needed to conduct this procedure:
•High voltage oscilloscope probe (100:1)
•Digital Oscilloscope
•Current probe
Always ensure that the measuring instruments are rated for the voltage and frequency response involved. A digital
oscilloscope or probe with a low frequency response will result in erroneous readings that could be misread.
CAUTION
High voltage generated by the MegaPulse tester is exposed during this test. A risk of shock exists.
Exercise care when using the MegaPulse tester.
1. Turn the rear-panel Power Switch OFF.
2. Disconnect all high voltage cables from the output.
3. Turn the rear-panel Power Switch ON. If residual voltage is shown on LED display:
a. Press the red TRIGGER button to discharge the main capacitor into the internal resistor of the
MegaPulse unit.
4. Set the Voltage Set Point to 500V, see section “Voltage Set Point Adjustment.”
5. Plug the high voltage test lead (black) into the Return jack, located on the front panel.
6. Plug the high voltage test lead (red) into the output jack, located on the front panel.
7. Connect the ends of the test leads to the measuring instrument. See Figure 4 for an example.
8. Set the next capturing setting on the digital oscilloscope to capture the high voltage pulse:
a. Vertical Scale = 100V / div.
b. Horizontal Scale = 10uS / div
c. Trigger Level = +100V
d. Slope transition “Low to High.”
e. Set “High Frequency Reject” mode.
f. Set “Single Pulse” capture mode.
9. Press the Charge button and wait until voltage reaches 500V.
10. Press the Trigger button to deliver the pulse (be sure not to touch the output and return leads when pressing
the trigger switch).
11. Verify that the impulse waveform obtained complies with the tester specs in Section 3.
12. Repeat steps 8 through 11 at 2000V, be sure to adjust oscilloscope settings to capture the full waveform.
13. Select a negative pulse by pressing the polarity button, and verify the yellow REV indicator is lit.
14. Change the capturing setting on the digital oscilloscope to capture the negative pulse:
a. Trigger Level = -100V.
b. Slope transition “High to Low”
15. Charge and Trigger the pulse at 500V. `
16. Verify that the impulse waveform obtained complies with the tester specs in Section 3.
*Image for reference only.
Figure 3. Waveform Measurement Setup.

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Section 6
Maintenance and Calibration
WARNING
MAINTENANCE AND CALIBRATION INSTRUCTIONS ARE FOR QUALIFIED PERSONNEL ONLY. TO
AVOID ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING OTHER THAN THE CONTAINED IN
THE OPERATING INSTRUCTIONS.
Introduction
This section of the manual contains maintenance information for the MegaPulse 1.2x50/8x20-2PF-HR impulse tester.
A 1-year calibration cycle is recommended to maintain the specifications of the factory. The test equipment required
for the performance test is a digital oscilloscope, high voltage oscilloscope probe, current monitor, digital meter and
a high voltage probe.
Service Information
The MegaPulse tester is warranted to the original purchaser for a period of 1 year. This warranty does not cover
problems due to misuse or neglect. Malfunctions which occur within the limits of the warranty will be corrected at
no charge. Mail the instrument postpaid to the manufacturer. Dated proof of purchase is required for all in-warranty
repairs. The manufacturer is also available for calibration and / or repair of instruments that are beyond their warranty
period. Contact the manufacturer for a cost quotation. Ship the instrument and your remittance according to the
instructions given by the manufacturer.
General Maintenance
To avoid contaminating the PWB with oil from your fingers, handle it by the edges or wear gloves. If the PWB
becomes contaminated, refer to the cleaning procedures given later in this section.
WARNING
Dangerous voltages exist when energized. Exercise extreme care when working on an energized circuit.
Cleaning
Clean the front panel and case with a mild solution of detergent and a damp sponge. Clean dust from the PWB with
clean, dry, low pressure (<20 psi)
CAUTION
Do not use aromatic hydrocarbons or chlorinated solvents for cleaning. These solutions will react with the
plastic materials used in the instrument.
Calibration Information
The Calibration Procedure should be performed annually and any time the instrument has been repaired.
The calibration procedure should be performed at an ambient temperature of 23C 5C (73.4F 9F).
The procedure consists on internal components tolerance verification and calibrating the meter reading to
agree with the capacitor bank. The Calibration procedure must be performed by qualified personnel, for
more information contact Compliance West USA.

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Voltage Stop Disable / Keyboard Enable by Keyboard.
If the MegaPulse 1.2x50/8x20-2PF-HR tester includes TestMinder option and has the Voltage Stop by the
PC command activated, it is possible to disable it using the next keyboard sequence:
Note: Disabling Voltage Stop enables the keyboard.
Turn OFF the MegaPulse P tester.
Hold in the TRIGGER and NOR-REV buttons.
Turn ON the MegaPulse P tester.
Wait until the display shows rESE.
Release the TRIGGER and NOR-REV buttons.

15
Section 7
Technical Assistance
Technical Assistance from Compliance West USA is available:
Phone: [phone]
Hours: 8:00 AM - 4:00 PM Pacific Time.
Also available on our web site at: www.compwest.com
Contact:
Compliance West USA
650 Gateway Center Way, Suite D
San Diego, CA, 92102
United States of America.
Phone: [phone]
FAX: [phone]