Avtech AVR-D3-B User manual

INSTRUCTIONS
MODEL AVR-D3-B
UP TO ±250 VOLTS, ±5 AMP
BIPOLAR TRANSISTOR
SEMICONDUCTOR TEST PULSER
WITH IEEE 488.2 / RS-232 / ETHERNET CONTROL
SERIAL NUMBER: 4 7
A V T E C H E L E C T R O S Y S T E M S L T D .
N A N O S E C O N D W A V E F O R M E L E C T R O N I C S
S I N C E 9 7 5
[e-mail]
http://www.avtechpulse.com/
Tel: [phone] (USA & Canada) or + -6 3-686-6675 (Intl)
Fax: 800-56 - 970 (USA & Canada) or + -6 3-686-6679 (Intl)
BOX 5 20, LCD MERIVALE
OTTAWA, CANADA K2C3H5

WARRANTY
Avtech Electrosystems Ltd. warrants products of its manufacture to be free
from defects in material and workmanship under conditions of normal use. If,
within one year after delivery to the original owner, and after prepaid return by
the original owner, this Avtech product is found to be defective, Avtech shall at
its option repair or replace said defective item. This warranty does not apply to
units which have been dissembled, modified or subjected to conditions
exceeding the applicable specifications or ratings. This warranty is the extent of
the obligation assumed by Avtech with respect to this product and no other
warranty or guarantee is either expressed or implied.
TECHNICAL SUPPORT
Phone: [phone] (USA & Canada) or + -6 3-686-6675 (International)
Fax: 800-56 - 970 (USA & Canada) or + -6 3-686-6679 (International)
E-mail: [e-mail]
World Wide Web: http://www.avtechpulse.com
2

TABLE OF CONTENTS
WARRANTY......................................................................................................................2
TECHNICAL SUPPORT...................................................................................................2
TABLE OF CONTENTS....................................................................................................3
INTRODUCTION...............................................................................................................5
SPECIFICATIONS.............................................................................................................7
REGULATORY NOTES....................................................................................................9
FCC PART 18.......................................................................................................................... 9
EC DECLARATION OF CONFORMITY..................................................................................9
DIRECTIVE 2011/65/EU (RoHS)..........................................................................................10
DIRECTIVE 2002/96/EC ( EEE)..........................................................................................10
FIRM ARE LICENSING.......................................................................................................11
INSTALLATION..............................................................................................................12
VISUAL CHECK....................................................................................................................12
PO ER RATINGS................................................................................................................12
CONNECTION TO THE PO ER SUPPLY...........................................................................12
PROTECTION FROM ELECTRIC SHOCK...........................................................................13
ENVIRONMENTAL CONDITIONS........................................................................................14
LABVIE DRIVERS.............................................................................................................14
FUSES.............................................................................................................................15
AC FUSE REPLACEMENT...................................................................................................15
DC FUSE REPLACEMENT...................................................................................................16
FUSE RATINGS....................................................................................................................16
FRONT PANEL CONTROLS..........................................................................................17
REAR PANEL CONTROLS............................................................................................19
GENERAL INFORMATION............................................................................................21
BASIC PULSE CONTROL....................................................................................................21
TRIGGER MODES................................................................................................................22
GATING MODES...................................................................................................................23
MINIMIZING WAVEFORM DISTORTIONS....................................................................24
USE 50 OHM TRANSMISSION LINES.................................................................................24
USE LO -INDUCTANCE LOADS........................................................................................24
TYPICAL USAGE AND WAVEFORMS..........................................................................25
3

TURN-ON TEST....................................................................................................................25
TURN-OFF TEST.................................................................................................................. 26
IMPEDANCE NOTES............................................................................................................28
TRANSITION TIME NOTES..................................................................................................28
PROGRAMMING YOUR PULSE GENERATOR............................................................29
KEY PROGRAMMING COMMANDS....................................................................................29
ALL PROGRAMMING COMMANDS.....................................................................................30
OTHER INFORMATION.................................................................................................32
APPLICATION NOTES.........................................................................................................32
MANUAL FEEDBACK...........................................................................................................32
MECHANICAL INFORMATION......................................................................................33
TOP COVER REMOVAL.......................................................................................................33
RACK MOUNTING................................................................................................................ 33
ELECTROMAGNETIC INTERFERENCE..............................................................................33
MAINTENANCE..............................................................................................................34
REGULAR MAINTENANCE..................................................................................................34
CLEANING............................................................................................................................ 34
WIRING DIAGRAMS.......................................................................................................35
IRING OF AC PO ER.......................................................................................................35
PCB 158R5 - LO VOLTAGE PO ER SUPPLY................................................................36
PCB 168C - HIGH-VOLTAGE PO ER SUPPLY.................................................................37
PCB 228C - NEGATIVE UV CONTROL PCB.......................................................................38
PCB 241C - DUAL P PCB.................................................................................................39
PCB 335A - DUAL TRIGGER ENCODER............................................................................40
PCB 104G - KEYPAD / DISPLAY BOARD...........................................................................41
MAIN IRING.......................................................................................................................42
PERFORMANCE CHEC SHEET..................................................................................43
Manual Reference: /fileserver2/officefiles/instructword/avr-d3/AVR-D3-B,ed2.odt.
Last modified April 3, 202 .
Copyright © 202 Avtech Electrosystems Ltd, All Rights Reserved.
4

INTRODUCTION
The AVR-D3-B is a high performance, GPIB and RS232-equipped instrument capable
of generating the bipolar waveform shown below:
In the waveform shown above, a wide negative pulse (with pulse width PW2 and
amplitude -V2) is interrupted by a shorter positive pulse (PW , +V ). The three
highlighted transition have switching times of 20 ns or less. (The final transition to
ground is slower).
This waveform allows both turn-on and turn-off transitions to be tested, without biasing
the devices with thermally-troublesome DC currents.
The main output is normally connected to a user-supplied test circuit, similar to that
shown below:
VPULSE
ROUT = 50Ω User's
coaxial
cabling
Typical user-supplied
test circuit
AVR-D3-B-MS
OUT
MON
RMON = 50Ω
VOUT, to
oscilloscope
VCC = +30V
.25Ω
4Ω
VBB = -4V
N9 4
2N5686
VMON, to
oscilloscope VIN, to
oscilloscope
VCURR-MON, to
oscilloscope
5
V ,
+ V to +250V
V2,
- V to -250V
0V
Delay,
0 to 00 us
PW ,
0 to 00 us
tR ≤ 20 ns (20%-80%)
VPULSE
PW2,
30 to 300 us

A 50 Ohm output impedance exists between the internal pulse generator circuit and the
output connector on the front panel of the instrument.
A monitor output (“MON”) is provided as well, for monitoring the internal pulse
waveform. It can be used to sense the voltage drop across the main output resistance,
thus providing a measure of the actual output current. However, the user of a dedicated
current transformer or current probe is normally recommended for current sensing.
The AVR-D3-B features front panel keyboard and adjust knob control of the output
pulse parameters along with a four line by 40-character backlit LCD display of the
output amplitude, pulse width, pulse repetition frequency, and delay. The instrument
includes memory to store up to four complete instrument setups. The operator may use
the front panel or the computer interface to store a complete “snapshot” of all key
instrument settings, and recall this setup at a later time.
The instrument is protected against overload conditions (such as short circuits) by an
automatic control circuit. An internal power supply monitor removes the power to the
output stage for five seconds if an average power overload exists. After that time, the
unit operates normally for one second, and if the overload condition persists, the power
is cut again. This cycle repeats until the overload is removed.
This instrument is intended for use in research, development, test and calibration
laboratories by qualified personnel.
6

SPECIFICATIONS
Model : AVR-D3-B
V amplitude: + V to +250V
V2 amplitude: - V to -250V
PW pulse width: 0 to 00 us
PW2 pulse width: 30 to 300 us
Output impedance (ROUT): 50 Ohms
Maximum output current: ±250V / ROUT = ±5 Amps
Maximum power dissipated
internally, in ROUT:(5A)2 × 50Ω × 300 us × 0 Hz = 3.75 W
Switching time (tR): ≤ 20 ns (20%-80%), as measured at the “MON” connector. The switching
times at the “OUT” connector may be slower due to the effective of ROUT
and and the cabling / circuit capacitance (CLOAD). The time constant of any
degradation will be given by τ = ROUT × CLOAD. This switching time (tR)
applies to the three transitions noted in the waveform above. The fourth
transition will be much slower.
Pulse repetition frequency Hz to 0 Hz, adjustable, or single-shot.
Supplied test jigs: None (user-supplied)
Propagation delay: ≤ 50 ns (Ext trig in to pulse out)
Jitter: ± 00 ps ± 0.03% of sync delay (Ext trig in to pulse out)
Trigger required: External trigger mode: TTL, 50 ns or wider
Sync delay: Variable 0 to ± second (sync out to pulse out)
Sync output: +3 Volts, 00 ns, will drive 50 Ohm loads
Gated operation: Active high or low, switchable.
Connectors: Out, Trig, Sync, Gate: BNC
GPIB & RS-232 control : Standard feature on all -B units.
LabView drivers: Available for download at http://www.avtechpulse.com/labview.
Ethernet port, for remote Included. Recommended as a modern alternative to GPIB / RS-232.
7
V ,
+ V to +250V
V2,
- V to -250V
0V
Delay,
0 to 00 us
PW ,
0 to 00 us
tR ≤ 20 ns (20%-80%)
VPULSE
PW2,
30 to 300 us

control using VXI- .3, ssh,
telnet, & web: See http://www.avtechpulse.com/options/vxi for details.
Settings resolution: The resolution of the timing parameters varies, but is always
better than 0. 5% of the set value. The amplitude resolution is
typically 0.02% of the maximum amplitude.
Settings accuracy: Typically ± 3% (plus ± V or ± 2 ns) after 0 minute warmup.
For high-accuracy applications requiring traceable calibration,
verify the output parameters with a calibrated oscilloscope2.
Power requirements: 00 - 240 Volts, 50 - 60 Hz
Dimensions: 00 mm x 430 mm x 375 mm (3.9” x 7” x 4.8”)
Chassis material: Cast aluminum frame and handles, blue vinyl on aluminum cover plates
Mounting: Any. Add -R5 to the model number to add a rack-mount kit.
Temperature range: +5°C to +40°C
) -B suffix indicates IEEE-488.2 GPIB and RS-232 control of amplitude and frequency. See http://www.avtechpulse.com/gpib for
details.
2) These instruments are provided with a basic calibration checksheet, showing a selection of measured output parameters. These
measurements are performed with equipment that is calibrated on a regular basis by a third-party ISO/IEC 7025:2005 accredited
calibration laboratory. However, Avtech itself does not claim any accreditation. For applications requiring traceable performance,
use a calibrated measurement system rather than relying on the accuracy of the pulse generator settings.
8

REGULATORY NOTES
FCC PART 8
This device complies with part 8 of the FCC rules for non-consumer industrial,
scientific and medical (ISM) equipment.
This instrument is enclosed in a rugged metal chassis and uses a filtered power entry
module (where applicable). The main output signal is provided on a shielded connector
that is intended to be used with shielded coaxial cabling and a shielded load. Under
these conditions, the interference potential of this instrument is low.
If interference is observed, check that appropriate well-shielded cabling is used on the
output connectors. Contact Avtech ([email protected]) for advice if you are unsure
of the most appropriate cabling. Also, check that your load is adequately shielded. It
may be necessary to enclose the load in a metal enclosure.
If any of the connectors on the instrument are unused, they should be covered with
shielded metal “dust caps” to reduce the interference potential.
This instrument does not normally require regular maintenance to minimize interference
potential. However, if loose hardware or connectors are noted, they should be
tightened. Contact Avtech ([e-mail]) if you require assistance.
EC DECLARATION OF CONFORMITY
We Avtech Electrosystems Ltd.
P.O. Box 5 20, LCD Merivale
Ottawa, Ontario
Canada K2C 3H5
declare that this pulse generator meets the intent of Directive 2004/ 08/EG for
Electromagnetic Compatibility. Compliance pertains to the following specifications as
listed in the official Journal of the European Communities:
EN 5008 - Emission
EN 50082- Immunity
9

and that this pulse generator meets the intent of the Low Voltage Directive 2006/95/EC.
Compliance pertains to the following specifications as listed in the official Journal of the
European Communities:
EN 6 0 0- :200 Safety requirements for electrical equipment for
measurement, control, and laboratory use
DIRECTIVE 20 /65/EU (RoHS)
We Avtech Electrosystems Ltd.
P.O. Box 5 20, LCD Merivale
Ottawa, Ontario
Canada K2C 3H5
declare that, to the best of our knowledge, all electrical and electronic equipment (EEE)
sold by the company are in compliance with Directive 20 /65/EU of the European
Parliament and of the Council of 8 June 20 on the restriction of the use of certain
hazardous substances in electrical and electronic equipment (also known as “RoHS
Recast”). In addition, this declaration of conformity is issued under the sole
responsibility of Avtech Electrosystems Ltd. Specifically, products manufactured do not
contain the substances listed in the table below in concentrations greater than the listed
maximum value.
Material/Substance Threshold level
Lead (Pb) < 000 ppm (0. % by mass)
Mercury (Hg) < 000 ppm (0. % by mass)
Hexavalent Chromium (Cr6+) < 000 ppm (0. % by mass)
Polybrominated Biphenyls (PBB) < 000 ppm (0. % by mass)
Polybrominated Diphenyl ethers (PBDE) < 000 ppm (0. % by mass)
Cadmium (Cd) < 00 ppm (0.0 % by mass)
Bis(2-ethylhexyl) phthalate (DEHP) < 000 ppm (0. % by mass)
Butyl benzyl phthalate (BBP) < 000 ppm (0. % by mass)
Dibutyl phthalate (DBP) < 000 ppm (0. % by mass)
Diisobutyl phthalate (DIBP) < 000 ppm (0. % by mass)
DIRECTIVE 2002/96/EC (WEEE)
European customers who have purchased this equipment directly from Avtech will have
completed a “WEEE Responsibility Agreement” form, accepting responsibility for WEEE
compliance (as mandated in Directive 2002/96/EC of the European Union and local
0