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Scientific Instruments GmbH
SI
... the better technology
Roemerstr. 67 | 82205 Gilching/Germany | Phone: +49 8105 77940 | E-mail: info@si-gmbh.de | Web: www.si-gmbh.de
DIRECTED ENERGY, INC.
PVX-4110
OPERATION MANUAL
SERIAL NUMBER:________________
DATE:__________________________
Directed Energy, Inc.
2401 Research Blvd., Ste. 108
Fort Collins, Colorado 80526
970/493-1901
FAX 970/493-1903
www.directedenergy.com
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Table of Contents
Related Manuals for DEI PVX-4110
Summary of Contents for DEI PVX-4110
- Page 1 Scientific Instruments GmbH ... the better technology Roemerstr. 67 | 82205 Gilching/Germany | Phone: +49 8105 77940 | E-mail: info@si-gmbh.de | Web: www.si-gmbh.de DIRECTED ENERGY, INC. PVX-4110 OPERATION MANUAL SERIAL NUMBER:________________ DATE:__________________________ Directed Energy, Inc. 2401 Research Blvd., Ste. 108...
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Page 2: Table Of Contents
TABLE OF CONTENTS 1.0 GENERAL DESCRIPTION ................3 2.0 SPECIFICATIONS ..................4 3.0 SAFETY .......................6 3.1 Operating Safety Summary ...............6 3.1.1 Power Source ..............6 3.1.2 Grounding................6 3.1.3 Cover Removal..............6 3.1.4 General Operating Precautions ...........6 3.2 Servicing Safety Summary ..............7 3.2.1 Servicing Procedure ............7 3.2.2 Internal Energy Storage............7 4.0 OPERATING CONSIDERATIONS...............7 4.1 Output Cabling ..................7... - Page 3 SYSTEM. USE OF THIS PRODUCT INCONSISTENT WITH THAT SET FORTH IN THIS MANUAL MAY IMPAIR OR REMOVE PRODUCT SAFETY FEATURES. Directed Energy, Inc (DEI) provides information on its products and associated hazards, but it assumes no responsibility for the after-sale operation and safety practices.
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Page 4: General Description
1.0 GENERAL DESCRIPTION The DEI PVX-4110 pulser is a high voltage solid-state pulser designed to drive capacitive loads such as acceleration grids and deflection plates. The PVX-4110 will generate an output voltage swing of 10,000 volts, and output current of 30 amperes peak and 0.1 amperes continuous. It produces very flat voltage pulses to DC into a capacitive load. -
Page 5: Specifications
2.0 SPECIFICATIONS All specifications measured into a 50pF load connected with 4ft RG-11 cable INPUT PULSE VOLTAGE +V IN (V high ) Source External Absolute Maximum Value +10,000 volts Absolute Minimum Value -10,000 volts Relative Maximum Value +10,000 volts over V low voltage Relative Minimum Value V low voltage Input Connector... - Page 6 These specifications are measured driving a 50pF load connected with 4 feet of RG-11 cable, at 10,000V output. However the PVX-4110 can drive loads of a few picofarads to several hundred picofarads of capacitance, limited by its maximum power dissipation capability .
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Page 7: Safety
3.1.1 Power Source The PVX-4110 is designed to operate from a power source that will not apply more than 240 volts AC between the supply conductors or between either supply conductor and ground. -
Page 8: Servicing Safety Summary
4.0 OPERATING CONSIDERATIONS 4.1 Output Cabling The PVX-4110 is designed to drive capacitive loads with fast rise times. Since the current out of the PVX-4110 is limited, the lower the capacitance, the faster the risetime. Given fixed load characteristics, only the interconnecting cable type and length will vary the output capacitance. -
Page 9: Load Simulation
PVX-4110 trigger input. The input trigger amplitude should be set using a 50Ω load (e.g. a 50Ω scope input) before connecting it to the PVX-4110. If the trigger input is greater than +5V into 50Ω , pulse stretching can occur. -
Page 10: Controls And Indicators
logically inverting the input gate, so that the input gate is high until the unit is pulsed. When the input gate goes low, the V low supply is connected to the output, thereby generating a negative going pulse (see the example in the figure below). -
Page 11: Over Current Led
"GATED" LED is not illuminated, the PVX-4110 will not generate an output pulse. 4.6.5 Over Current LED The LED labeled "OVER CURRENT" illuminates if the output pulse current exceeds 15A. If this LED illuminates, the pulse output will be inhibited for 6-7 milliseconds. -
Page 12: Electrical Installation
5.4.1 Power-Up The unit should be powered up using the following procedures: 1. Before connecting the pulse generator to the PVX-4110, set up the pulse generator output to deliver a +5V pulse (±1V) into 50Ω, with a rep rate of approximately 500Hz, and a pulse width of 1µs. -
Page 13: Operating Instructions
8. If there is no output from the PVX-4110, or the output is severely distorted, turn OFF the high voltage power supplies. Leave the PVX-4110 connected... -
Page 14: Power-Down Procedures
PVX-4110 to the desired level by adjusting the output voltage of the high voltage power supplies. 2. Set the output pulse width and pulse recurrence frequency by varying the controls of the input pulse generator. The output pulse width should be set by monitoring the output of the PVX-4110. -
Page 15: Fuses
The power MOSFETs utilized in the PVX-4110 are mounted on the printed circuit board. In the unlikely event that the MOSFETs need be replaced, it is highly recommended that the unit be returned to the factory for servicing. The table below summarizes potential problems and their solutions. If these recommendations do not resolve the problem, DEI customer service can be contacted for further assistance. -
Page 16: System Failure Modes
VOIDS THE WARRANTY. 8.1 Over-Current Failure When the output is shorted, the PVX-4110 can deliver in excess of 30A of current (depending on cabling, pulse power supply setting, etc.). A current pulse of this magnitude is in excess of the driver's specifications. The PVX-... - Page 17 DEI's option, refund of the purchase price, taxes and transportation charges incurred by the purchaser. DEI will not be responsible for or liable to the purchaser for consequential losses or damages asserted to be attributable to a claimed defect in the equipment provided.