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PVX-4140 B

±3500 V Pulse Generator

Operating Manual

Directed Energy, Inc.

1609 Oakridge Dr., Suite 100

Fort Collins, CO 80525

(970) 493-1901

[email protected]

https://directedenergy.com

Document #7650-0038 Rev A1. © Copyright 2019 Directed Energy, Inc. All rights reserved.

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Summary of Contents for PVX-4140 B

Page 1: ...or Operating Manual Directed Energy Inc 1609 Oakridge Dr Suite 100 Fort Collins CO 80525 970 493 1901 sales directedenergy com https directedenergy com Document 7650 0038 Rev A1 Copyright 2019 Directed Energy Inc All rights reserved ...

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Page 3: ...ED 7 4 6 3 Gate Connector 7 4 6 4 Gated LED 7 4 6 5 Over Current LED 7 4 6 6 Control Error LED 8 4 6 7 Current Monitor 8 4 6 8 Voltage Monitor 8 4 7 Remote Control 10 5 0 PREPARATION FOR USE 12 5 1 General 12 5 2 Initial Inspection 12 5 3 Electrical Installation 12 5 3 1 Input Power Cord 12 5 4 Electrical Check 12 5 4 1 Power Up 12 6 0 OPERATING INSTRUCTIONS 14 6 1 Power Up Procedures 14 6 2 Power...

Page 4: ...fications https directedenergy com 3 0 SAFETY The high voltage capability of this instrument dictates caution when operating it The following is a summary of general safety precautions that must be observed during all phases of operation of the PVX 4140 B WARNING Risk of lethal electric shock Do not touch the output or load while the PVX 4140 B is operating This instrument produces LETHAL levels o...

Page 5: ...ord To avoid electrical shock plug the PVX 4140 B into a properly wired receptacle before making connection to any input or output connectors Use only a power cord that is in good condition 3 3 General Operating Precautions Do not remove the input or output cables while the instrument is in operation Never short circuit the output Failure to observe these precautions can result in potential electr...

Page 6: ... for the high voltage inputs is 3500 V In addition the HV Input must never be greater than 3500 V above the HV Input Precautions should be taken to ensure that these maximum voltages are not exceeded 4 5 Output Pulse Considerations The PVX 4140 B can generate single ended output pulses from ground to 3500 V or from ground to 3500 V It can also generate pulses originating from a voltage offset from...

Page 7: ...e output The Output Enabled LED illuminates when the output is enabled 4 6 3 Gate Connector Logic level pulses at the Gate input control the output The input requirements are 5 V into 50 Ω with a rise time less than 20 ns The output pulse follows the Gate input signal s pulse width and frequency 4 6 4 Gated LED The Gated LED illuminates when a gate signal of the appropriate amplitude and width is ...

Page 8: ...et the fault and the second time to enable the output The instrument may also be reset via the remote reset function See section 4 7 If the Over Current LED illuminates continuously the cause of the over current fault should be corrected before attempting to operate the instrument 4 6 6 Control Error LED To permit burst mode operation the Control Error LED is not used in this instrument model 4 6 ...

Page 9: ...Page 9 of 20 For more information 970 493 1901 or sales directedenergy com Document 7650 0038 Rev A1 Copyright 2019 Directed Energy Inc All rights reserved ...

Page 10: ...pen drain 24 mA maximum ON 24 V DC maximum OFF 7 Control Error Status Output Active low open drain 24 mA maximum ON 24 V DC maximum OFF not used 8 Power Status Output Active low open drain 24 mA maximum ON 24 V DC maximum OFF 9 Enable Input Low to high transition to enable disable reset 10 Invert Input Pull low to invert the Gate input 11 Remote Input Pull low for remote operation 12 Interlock Inp...

Page 11: ...tently turn it ON For this reason it is recommended to completely turn the high voltage power supplies and the instrument OFF when servicing the load The Interlock input pin 12 must be connected to Ground pin 4 in order to satisfy the interlock circuit as shipped from the factory If the Interlock pin is disconnected the user will not be able to enable the output The interlock feature can used as p...

Page 12: ...on of the plug into a compatible receptacle hooked up to a grounded input will automatically ground the instrument The instrument should not be operated without a grounded AC input 5 4 Electrical Check Before proceeding please review the precautions in Section 3 5 4 1 Power Up The PVX 4140 B should be powered up using the following procedures 1 Insert the supplied DA 15 plug into the rear panel so...

Page 13: ...onitor set the scope input impedance to 1 MΩ Please note that the rise and fall times are from the launch point of the pulse and may differ slightly from the ones displayed at the load 8 Plug the power cord into the AC power input and turn on the rear panel Power switch The Power LED should illuminate indicating that the PVX 4140 B is operational If this does not occur unplug it from AC power and ...

Page 14: ...should be powered up using the procedures detailed in the Section above When this is accomplished it can be adjusted for the particular application through the following procedure 1 Monitor the output of the PVX 4140 B on an oscilloscope utilizing a high voltage probe connected to the load or with a coax attached to the Voltage Monitor output on the front panel Set the output amplitude of the PVX ...

Page 15: ... voltage Check HV supplies for correct operation o Output not connected correctly Check all cables and connections o Instrument is damaged Contact DEI customer service 7 1 1 Fuses To avoid fire hazard or damage to the instrument use only the fuse types listed on the rear panel Fuse replacement should be performed by qualified personnel only 8 0 SYSTEM FAILURE MODES The PVX 4140 B is capable of gen...

Page 16: ...o original owner This Warranty shall not apply to any product that has been I Repaired worked on or altered by persons unauthorized by DEI in such a manner as to injure in DEI s sole judgment the performance stability or reliability of the product II Subjected the product to misuse neglect or accident or III Connected installed adjusted or used otherwise than in accordance with instructions furnis...

Page 17: ...ted Energy Inc All rights reserved 10 Factory Service If the procedures above fail to resolve an operational problem please contact the factory for further assistance DIRECTED ENERGY INC 1609 Oakridge Dr Ste 100 Fort Collins CO 80525 970 493 1901 sales directedenergy com support directedenergy com https directedenergy com ...

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