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DEI PVM-4210 ********** WARNING ********** SAFE OPERATING PROCEDURES AND PROPER USE OF THE EQUIPMENT ARE THE RESPONSIBILITY OF THE USER OF THIS SYSTEM. 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. ALL PERSONNEL WHO WORK WITH OR ARE EXPOSED TO THIS EQUIPMENT MUST TAKE PRECAUTIONS TO PROTECT THEMSELVES AGAINST POSSIBLE SERIOUS AND/OR FATAL BODILY INJURY
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DEI PVM-4210 1.0 Safety The high voltage/high current nature of this device dictates the use of caution when operating or servicing this equipment. OBSERVE ALL SAFETY PRECAUTIONS LISTED BELOW. FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY. Precautions: 1. The Pulser should be serviced only by personnel experienced in high voltage pulsed power systems. 2. Service personnel should be instructed to observe all safety precautions as stated in the operating instructions, and those safet
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DEI PVM-4210 photomultiplier tubes. The exceptional pulse fidelity of the PVM-4210 will optimize the performance of any system in which it is used. The module provides two pulse output channels, controlled by a common control logic. When the control logic receives a gate signal, both channels pulse simultaneously. One channel pulses from ground to the positive high voltage, and the other channel pulses from ground to the negative high voltage. Therefore each output can be connected t
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DEI PVM-4210 P1-9 +5VDC +950V Power +5V To Logic +24V Supply +75V Power P1-15 +24V +15V Supply Positive Pull Up Positive On Gate Inversion on/off Gate Output Pulse Generation Primary Drive Transformer P1-6 Pulse Over current inhibit Off Positive Pull Down O/C To HV HV P1-14 Power Enable Overcurrent Output Current Supplies Sense Sense +/- Negative Pull Down Negative Output Negative Pull Up -950V Power +24V Supply Document Number 9100-0201 Rev 8 Directed Energy, Inc. 2000-200
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DEI PVM-4210 3.0 Specifications The pulser will meet or exceed the following specifications. All specifications are measured into a 50pF load connected to each of the two outputs with 12” (~30cm) of Belden 8218 (75Ω) coaxial cable : OUTPUT PULSE ELECTRICAL CHARACTERISTICS (Specifications Apply To Both Output Channels) Output Voltage 0 to +950V ±5V (Channel 1), 0 to –950V ±5V (Channel 2) Output Voltage Adjustments Screwdriver-adjustable potentiometers, End Panel Pulse Width <40ns
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DEI PVM-4210 continuous pulse recurrence frequencies greater than 20KHz. This formula is not applicable when driving non-capacitive (resistive or inductive) loads. Contact DEI for information or assistance in using the PVM-4210 with different load characteristics or impedances. 4.0 Connector Pin-Outs And User Adjustments Input And Output Connectors: DB-15 PIN Number Function P1 - 2 Ground P1 - 3 +5VDC Output For Enable Circuit (See text below) P1 - 6 Gate TTL into 50Ω P1 - 7
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DEI PVM-4210 +5V GATE INPUT GROUND + PULSE VOLTAGE OUT + PULSE OUT GROUND GROUND - PULSE OUT - PULSE VOLTAGE OUT Output Pulse Configuration With Non-Inverted Gate Selected The ouput polarity can be reversed (so that the output is held at high voltage when the gate is low, and pulsed ground when the gate is high) by jumpering pins 10 and 11 together. This is shown in the figure below: Document Number 9100-0201 Rev 8 Directed Energy, Inc. 2000-2002 Page 8
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DEI PVM-4210 +5V GATE INPUT GROUND + PULSE VOLTAGE OUT + PULSE OUT GROUND GROUND - PULSE OUT - PULSE VOLTAGE OUT Output Pulse Configuration With Inverted Gate Selected 4.2 Power Supply Enable For safety and flexibility, the PVM-4210 features a power supply enable input (DSUB connector pin 14). In order to enable the DC power supplies (and therefore generate an output pulse), this input must be held HIGH. This can be done in two ways: 1. Apply a TTL high signal to pin 14. The input imp
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DEI PVM-4210 5.0 OPERATING INSTRUCTIONS WARNING 1. Do not remove the input or output cables while the pulser is in operation. Never intentionally short-circuit the high voltage output of the pulser. Failure to observe these precautions can result in potential electric shock to personnel, arcing, and damage to the connectors and system. 4. Pulsed power systems are capable of random triggering via transients and therefore when the pulse generator is turned on, or high voltage is present
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DEI PVM-4210 2. Connect the input DSUB connector, and connect the output to an appropriate load, prior to applying +24VDC power. 3. Monitor the voltage across the load, utilizing an appropriate high voltage probe or attenuator. 4. Apply +24VDC to +28VDC power to the module, and apply a TTL level power supply enable signal (or close the switch to connect pin 3 to pin 14 as described above). The module should produce positive and negative output pulses with an amplitude equal to the
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DEI PVM-4210 -Input trigger voltage too low. -Input trigger pulse width too short. Increase width. -Input trigger frequency too high. Reduce frequency. -No input high voltage. Check HV supplies. -Enable circuit not satisfied. Ensure that +5VDC is applied to DSUB pin 14. -No gate polarity is selected. DSUB pins 9 & 10 or pins 10 &11 must be connected. -Output not connected correctly. Check all cables and connections. -Pulser is damaged. Contact DEI c
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DEI PVM-4210 At DEI's discretion, DEI may elect to repair or replace the equipment claimed to be defective or refund the original purchase price, plus taxes and transportation charges incurred by the purchaser. This Warranty shall not apply to any product that has been: 1. Repaired, worked on, or altered by persons unauthorized by DEI; 2. Subjected to misuse, neglect, or damage by others; or 3. Connected, installed, adjusted, or used in a manner not authorized in the instructions or s
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DEI PVM-4210 APPENDIX Mechanical Dimensions And Mounting Hole/Connector Location Drawing Document Number 9100-0201 Rev 8 Directed Energy, Inc. 2000-2002 Page 14
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DEI PVM-4210 11.50 10.50 1.00 PVM-4210 DEI + HV ADJUST +/- 950V DUAL OUTPUT PULSER MODULE - HV ADJUST DB-15 PINOUT + PULSE OUT + 950V MAX 2 GROUND 3 +5VDC @ 50mA OUTPUT 6 GATE (TTL into 50 Ohms) 7 +24VDC RETURN (GROUND) CAUTION, RISK OF 5.80 9 JUMPER TO PIN 10 FOR NON-INVERTING ELECTRIC SHOCK 10 GATE / OUTPUT POLARITY SELECT 11 JUMPER TO PIN 10 FOR INVERTING 5.00 4.80 12 GATE RETURN (GROUND) - PULSE OUT 14 POWER SUPPLY ENABLE/DISABLE (TTL HIGH = ENABLED) 4.30 - 950V MAX 15 +24-28VDC @ 600m
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DEI PVM-4210
DIRECTED ENERGY, INC.
PVM-4210
±950V Pulse Generator Module
OPERATION MANUAL
Directed Energy, Inc.
2401 Research Blvd., Ste. 108
Fort Collins, Colorado 80526
970/493-1901 FAX 970/493-1903
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DEI PVM-4210
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DEI PVM-4210 Table Of Contents 1.0 Safety...........................................................................................................3 2.0 Overview.....................................................................................................3 3.0 Specifications..............................................................................................6 4.0 Connector Pin-Outs And User Adjustments................................................7 4.1 Polarity Reve
