DEI HV1000 PULSER Operation Manual
HV1000 PULSER
OPERATION MANUAL
SERIAL NUMBER:
------
DATE:
---------
Directed Energy, Inc.
2301 Research Blvd., Ste. 105
Fort Collins, Colorado 80526
970/493-1901 FAX 970/493-1903
DEI HVlOOO PULSER
REV B
r-
i
I
TABLE OF CONTENTS
1. 0 GENERAL DESCRIPTION ................................ 3
2. 0 SPECIFICATIONS ..................................... 4
2 .1 Maximum Duty Cycles ................................ 5
2. 2 Pulse Droop ........................................ 5
3 . 0 SAFETY ............................................. 6
3.1 Operating Safety Summary ........................... 6
3.2 Servicing Safety Summary ........................... 7
4.0 OPERATING CONSIDERATIONS ........................... 8
4.1 Output ............................................. 8
4.2 Pulse Risetime and Falltime ........................ 8
4. 3 Impedance Matching ................................. 8
4 . 4 Trigger Input ...................................... 8
4. 5 High Voltage Input ................................. 9
4. 6 Maximum Duty Cycle ................................. 9
5.0 PREPARATION FOR USE ............................... 10
5 .1 General ........................................... 10
5.2 Initial Inspection ................................ 10
5. 3 Electrical Installation ........................... 10
5.4 Mechanical Installation ........................... 10
5.5 Electrical Check .................................. 10
6.0 OPERATING INSTRUCTIONS ............................ 12
6 . 1 Power- Up Procedures ............................... 12
6.2 Power-Down Procedures ............................. 12
7 . 0 EXAMPLE WAVEFORMS ................................. 14
7 .1 50 Ohm Resistive Load ............................. 14
7.2 Inductive Load (Step-Up Transformer) .............. 15
7 .3 Capacitive Load ................................... 15
7. 4 Current Source .................................... 16
8 . 0 TROUBLESHOOTING ................................... 1 7
8.1 Troubleshooting Procedures ........................ 17
8. 2 Factory Service ................................... 18
9 . 0 SYSTEM FAILURE MODES .............................. 19
9.1 Over-Current Failure .............................. 19
9. 2 Over-Voltage Failure .............................. 19
10. 0 WARRANTY ......................................... 20
11.0 APPENDIX A - Schematics .......................... 21
1
DEI HVl000 PULSER
********** 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. DO NOT PERFORM INTERNAL
REPAIR OR ADJUSTMENTS UNLESS ANOTHER PERSON
CAPABLE OF RENDERING FIRST AID AND
RESUSCITATION IS PRESENT.
2
REV B
DEI HVlOOO PULSER
REV B
1.0 GENERAL DESCRIPI'ION
The HVlOOO Pulser is a high voltage pulse generator
designed to be operated into a load impedance of 50 ohms.
The HVlOOO is designed as an instrument for lab
experiments, calibration, component testing, beam
steering, gating PMTs and MCPs, and other applications
that require very fast and clean high speed pulses, or
incorporated into an OEM system.
The HVlOOO utilizes a patented state-of-the-art high-speed
power MOSFET as the high voltage switch, incorporated into
a low impedance configuration featuring a multi-layer
stripline-style output bus.
The HVlOOO requires an external high voltage DC supply
(950V maximum), and an input trigger. The unit is
available in either positive or negative polarities. The
polarity of the DC power supply must be the same as the
polarity of the HVlOOO (i.e. a positive-polarity HVlOOO
requires a positive polarity DC power supply; a
negative-polarity HVlOOO requires a negative polarity DC
power supply).
3
DEI HVl000 PULSER
REV B
2.0 SPECIFICATIONS
(All Measurements into 50 Ohms)
INPUT HIGH VOLTAGE
Maximum Value .............•.......•.......•.... 950 volts DC
Minimum Value .••.•.........................•.•. 0 volts DC
Input High Voltage Connector ...........•..•.... Type N,
Side Panel
OUTPUT HIGH VOLTAGE
Maximum Value ........•.........•..•.••••...... 850 volts DC
Minimum Value ..........•....•............•..... 0 volts DC
Maximum Current ....•........................... 1 7 amperes
Means of adjustment .....•. Controlled by Input High Voltage
Output High Voltage Connector .......•..•....... Type BNC,
Side Panel
TRIGGER
Trigger Source ...•....••...................•... External
Trigger Input •............•.......•..•......... +5V +/-lV,
Into 50 ohms
Trigger Rise Time .......•.••............•...... <6ns
Minimum Trigger Pulse Width .......•..•..••..... 55ns
Maximum Trigger Pulse Width ....•........•..•... l0us
Input Trigger Connector ...•.......•......•.•... Type BNC,
Side Panel
OUTPUT PULSE ELECTRICAL CHARACTERISTICS
Pulse Rise Time (Negative Polarity) ..•..••..... 6ns 850V
(10%-90%)
Pulse Rise Time (Positive Polarity) ..•.••.....• l0ns 850V
(10%-90%)
Pulse Width .......•..•....•••..••..•.•...••••.. 55ns to lOus,
Controlled by Input Trigger
Pulse Recurrence Frequency •.••..• Single Shot to 1MHz, 5MHz
burst, controlled by input
trigger
Over /undershoot . ......................................... <5%
Jitter ...•.....•••.....•.•..••.....••...• <lO0ps shot-to-shot
Delay Between Trigger and Output Pulse •.•.••....•...... <40ns
Thermal Drift ..•.••...•.•••..•.•. Approx 500ps to lns over
ambient to 5o
0
c
GENERAL
Input AC Power ••.•...•......••.•. 110/220 VAC, 50/60Hz, Cord
provided
Dimensions .•.••..••.....••...•... 8.32" L x 4.22" W x 1.72" D
Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Approx. 3. 5 lbs.
4
DEI HVlOO0 PULSER
2.1
Maximum Duty Cycles
All measurements into
REV B
50 ohms.
VIN IoUT
950V
525V
17.0A
9.5A
105V 2.0A
2.2
Pulse Droog
All measurements into 50 ohms.
VIN
950V
950V
525V
525V
105V
105V
PULSE WIDTH
l.0us
10.ous
1.ous
10.ous
1.ous
10.0us
PPEAK
14.50KW
4.50KW
0.20KW
DUTY CYCLE
(MAX)
1%
4%
10%
PERCENTAGE DROOP
3.0%
24.0%
1.5%
16.0%
<0.5%
7.0%
5
DEI HVl000 PULSER
REV B
3.0 SAFETY
The high voltage nature of this device dictates the use of
caution when operating or servicing this equipment. The
following is a summary of general safety precautions that
must be observed during all phases of operation and repair
of the HVl000 Pulser.
3.1 Operating Safety Summary
The safety information contained in this summary is for
both operating and servicing personnel. Specific warnings
may be found throughout this manual, but may not appear in
this summary.
3.1.1 Power Source
The HVl000 is designed to operate from a power source that
will not apply more than 220 volts between the supply
conductors or between either supply conductor and ground.
A protective grounding connection by way of the grounding
conductor in the AC power cord is essential.
3.1.2 Grounding
The HVl000 is grounded through the grounding conductor of
the AC power cord. To avoid electrical shock, plug the
HVlOOO into a properly wired receptacle before making
connection to any input or output connectors. Use only a
power cord that is in good condition.
3.1.3 Cover Removal
To avoid personal injury, do not remove the cover. Do not
operate the HVlOOO while the cover is removed. The cover
does not contain a safety interlock!
3.1.4 General Operating Precautions
Do not remove the input or output cables while the pulser
is in operation. Never short-circuit the high voltage
output of the pulse generator. Failure to observe these
precautions can result in potential electric shock to
personnel, arcing, and damage to the connectors and
system.
The top cover of the pulse generator is not safety
interlocked. Extreme caution should be exercised when
removing the cover.
6
Loading...