Avtech AVR-EB4-B Bedienungsanleitung
INSTRUCTIONS
MODEL AVR-EB4-B
+2A / -4A REVERSE RECOVERY
MEASUREMENT SYSTEM
WITH 4.5 ns SWITCHING TIME
SERIAL NUMBER: 14 1
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 1 9 7 5
info@avtechpulse.com
http://www.avtechpulse.com/
Tel: 888-67 -8729 (USA & Canada) or +1-613-686-6675 (Intl)
Fax: 8 -561-197 (USA & Canada) or +1-613-686-6679 (Intl)
BOX 512 , 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: 888-67 -8729 (USA & Canada) or +1-613-686-6675 (International)
Fax: 8 -561-197 (USA & Canada) or +1-613-686-6679 (International)
E-mail: info@avtechpulse.com
World Wide Web: http://www.avtechpulse.com
2
TABLE OF CONTENTS
WARRANTY......................................................................................................................2
TECHNICAL SUPPORT...................................................................................................2
TABLE OF CONTENTS....................................................................................................3
INTRODUCTION...............................................................................................................6
SPECIFICATIONS............................................................................................................8
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
FUSES.............................................................................................................................15
AC FUSE REPLACEMENT...................................................................................................15
DC FUSE REPLACEMENT...................................................................................................16
FUSE RATINGS....................................................................................................................16
FRONT PANEL CONTROLS..........................................................................................17
REAR PANEL CONTROLS............................................................................................19
TIMING CONTROL.........................................................................................................21
BASIC TIMING CONTROL...................................................................................................21
TRIGGER MODES................................................................................................................23
GATING MODES...................................................................................................................23
BASIC AMPLITUDE CONTROL....................................................................................24
SETTING THE AMPLITUDE LEVELS..................................................................................25
AMPLITUDE ACCURACY.....................................................................................................26
INCORRECT ORIENTATION................................................................................................26
CABLE LENGTHS................................................................................................................26
3
ACCESSIBLE VOLTAGES...................................................................................................27
STANDARD TEST IG MECHANICAL ASPECTS........................................................28
AVX-TRR-MIX TEST JIG......................................................................................................28
TYPICAL RESULTS.......................................................................................................31
1N4937 RESULTS................................................................................................................31
J5418 RESULTS...................................................................................................................33
1N4004 RESULTS................................................................................................................34
MUR8100E RESULTS..........................................................................................................35
RUS460 RESULTS...............................................................................................................37
CSD10120 RESULTS...........................................................................................................39
UTG8042 RESULTS.............................................................................................................40
SPECIALIZED TEST IGS.............................................................................................42
AVX-TRR-ANB, AXIAL NO-BEND JIG.................................................................................42
AVX-TRR-AXPOST JIG........................................................................................................ 43
AVX-TRR-HPOST JIG..........................................................................................................44
AVX-TRR-MELF, MELF JIG.................................................................................................44
AVX-TRR-MELF, CHIP-LEVEL TESTS................................................................................46
AVX-TRR-STUD, DO-4 AND DO-5 STUD PACKAGES.......................................................46
AVX-TRR-BTA TEST JIG.....................................................................................................49
AVX-TRR-SDA TEST JIG.....................................................................................................51
AVX-TRR-AR1 TEST JIG......................................................................................................56
AVX-TRR-DO214AC TEST JIG............................................................................................60
TROUBLESHOOTING....................................................................................................62
PROGRAMMING YOUR PULSE GENERATOR............................................................63
KEY PROGRAMMING COMMANDS....................................................................................63
ALL PROGRAMMING COMMANDS.....................................................................................64
MECHANICAL INFORMATION......................................................................................66
TOP COVER REMOVAL.......................................................................................................66
RACK MOUNTING................................................................................................................66
ELECTROMAGNETIC INTERFERENCE..............................................................................66
MAINTENANCE..............................................................................................................67
REGULAR MAINTENANCE..................................................................................................67
CLEANING............................................................................................................................67
TRIGGER DAMAGE.............................................................................................................. 67
4
WIRING DIAGRAMS.......................................................................................................68
IRING OF AC PO ER.......................................................................................................68
PCB 158R5 - LO VOLTAGE PO ER SUPPLY................................................................69
PCB 168B - HIGH VOLTAGE DC PO ER SUPPLY...........................................................70
PCB 104G - KEYPAD / DISPLAY BOARD...........................................................................71
MAIN IRING.......................................................................................................................72
STANDARD TEST JIG IRING (AVX-TRR-MIX).................................................................73
TEST JIG IRING (AVX-TRR-AR1).....................................................................................74
TEST JIG IRING (AVX-TRR-AXPOST).............................................................................75
TEST JIG IRING (AVX-TRR-HPOST)................................................................................76
TEST JIG IRING (AVX-TRR-SCHA / AVX-TRR-MSB-MELF)...........................................77
TEST JIG IRING (AVX-TRR-SCHA / AVX-TRR-MSB-STUD)...........................................78
TEST JIG IRING (AVX-TRR-BTA).....................................................................................79
TEST JIG IRING (AVX-TRR-ANB)....................................................................................80
TEST JIG IRING (AVX-TRR-SDA).....................................................................................81
TEST JIG IRING (AVX-TRR-LORAX, AVX-TRR-SSDA, AVX-TRR-DO214AC)...............82
PERFORMANCE CHECK SHEET.................................................................................83
Manual Reference: /fileserver2/officefiles/instructword/avr-eb/avr-eb4/AVR-EB4-B,ed19.odt.
Last modified August 11, 2 2 .
Copyright © 2 2 Avtech Electrosystems Ltd, All Rights Reserved.
5
INTRODUCTION
The AVR-EB4-B is a high performance, GPIB and RS232-equipped instrument capable
of generating a +1 V / -2 V bipolar waveform into a 5 Ohm resistance. Normally, a
diode will be placed in series with this resistance, allowing diode currents of up to +2A
and -4A to be generated.
More specifically, the AVR-EB4-B mainframe generates a 2-2 us wide forward-bias
pulse with amplitude adjustable up to +1 V/+2A, which is immediately followed by a 2-
2 us wide reverse-bias pulse with amplitude up to -2 V/-4A. The forward and reverse
amplitudes and pulse widths are independently variable. The forward-to-reverse
switching time is < 4.5 ns (1 %-9 %).
The current waveforms generated by this instrument are suitable for MIL-STD-75 E
Method 4 31.4 Test Condition B tests. (Avtech can also provide separate test systems
for Condition D tests). In the terminology of this standard, V3 = up to +2 V, V4 =
up to -2 V, RF = 5 Ohms, R4 = 5 Ohms, and RR ≈ . These values differ from the
values suggested in the standard, but the use of 5 Ohm resistances allows common
coaxial cabling to be used for flexible connection arrangement, and greatly reduces the
τ = L / R time constants that plague measurement systems based on the suggested
values. As a result, the measurements are more accurate and more repeatable. (For
additional information about the rationale behind the basic approach, please see
Avtech Technical Brief 15, “A Comparison of Reverse Recovery Measurement
Systems”, at http://www.avtechpulse.com/appnote.)
The values of IF, IRM, and iR(REC) produced by this instrument are suitable for MIL-STD-
75 E Method 4 31.4 Test Conditions B1-B4. (Condition B4 is not recommended by
Avtech, however, because the high IRM / iR(REC) ratio will make the results more sensitive
to parasitic effects.)
Standard AVR-EB4-B models include one AVX-TRR-MIX diode test jig. The instrument
mainframe is connected to the test jig using one coaxial cable and one DB-9 control
cable. The standard test jig contains a variety of pin sockets and posts, which may be
used to hold the diode device under test (DUT). The test jig has a hinged lid, which
must be fully closed to protect the user from high voltages. The output will be
automatically disabled if the lid is left open. The standard AVX-TRR-MIX test jig will
accommodate TO-22 AC (2 lead) packages, DO-style packages with (leads bent at
9 °), and standard and reverse-polarity TO-3 packages.
The AVR-EB4-B may also be provided with different or additional a customized test
jigs, to meet particular customer package requirements.
The diode-under-test is connected in series with a 5 Ohm resistance present on the
test jig. In order to achieve the full +2A / -4A amplitude, the diode resistance (dV/dI at
high currents) must be much less than 5 Ohms (i.e., 5 Ohms or lower).
6
One end of the 5 Ohm resistance is connected to ground, and access to the other end
is provided through a coaxial connector. This output should be terminated with 5
Ohms, and connected to a high-bandwidth (> 4 MHz) oscilloscope. The voltage
across this resistance is directly proportional to the current through the diode. By
observing the current waveform through the diode, the reverse recovery time may be
determined.
While the provided test jig is intended to be flexible and easy to use, users can also
develop their own test jigs easily.
The AVR-EB4-B includes an internal trigger source, but it can also be triggered or
gated by an external source. A front-panel pushbutton can also be used to trigger the
instrument.
The AVR-EB4-B features front panel keyboard and adjust knob control of the output
pulse parameters along with a four line by 4 -character backlit LCD display of the
output amplitude, 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.
This instrument is intended for use in research, development, test and calibration
laboratories by qualified personnel.
7
SPECIFICATIONS
Model1: AVR-EB4-B
Recovery type: Reverse recovery
Intended application: High-speed rectifiers
Basic waveform: A positive pulse followed immediately by a negative pulse
Pulse polarity: - +
Voltage output2,4,6:
(to RL = 5 Ω) -2V to -2 V +5V to +1 V
Corresponding diode current2,4
(approx., depends on VDIODE): -4 mA to -4A +1 mA to +2A
Pulse width (FWHM): 2 us - 2 us
Rise time (1 %-9 %): < 4.5 ns < 1 us
Output impedance during pulse
(inside the mainframe): ≤ 2 Ohm 5 Ohms
Maximum PRF: 1 Hz
Variable delay (sync out to
main out): Follows + pulse to ±1s,
variable
Included test jig3: See tables on later pages.
Connectors: BNC on mainframe, SMA on jigs
GPIB & RS-232: Standard on -B units. See http://www.avtechpulse.com/gpib for details.
Ethernet port, for remote
control using VXI-11.3, ssh,
telnet, & web:
Included. Recommended as a modern alternative to GPIB / RS-232.
See http://www.avtechpulse.com/options/vxi for details.
Settings resolution: The resolution of the timing parameters (pulse width, delay, period) varies, but is always
better than .15% of (|set value| + 2 ns).
The amplitude resolution is < .1% of the maximum amplitude.
Settings accuracy: Typically ± 3% after 1 minute warmup, for timing parameter. For high-accuracy
applications requiring traceable calibration, verify the output parameters with a
calibrated oscilloscope4,1 .
Trigger modes: Internal trigger, external trigger (TTL level pulse, > 1 ns, 1 kΩ input impedance),
front-panel “Single Pulse” pushbutton, or single pulse trigger via computer command.
Sync output: > +3 Volts, > 5 ns, will drive 5 Ohm loads
Gate input: Active high or low, switchable. Suppresses triggering when active.
Power requirements: 1 - 24 Volts, 5 - 6 Hz
Dimensions: H x W x D: 1 mm x 43 mm x 375 mm (3.9” x 17” x 14.8”)
Chassis material: cast aluminum frame and handles, blue vinyl on aluminum cover plates
Temperature range: +5°C to +4 °C
1) -B suffix indicates IEEE-488.2 GPIB and RS-232 control of amplitude, pulse width, PRF and delay (see http://www.avtechpulse.com/gpib).
2) For operation at amplitudes of less than 1 % of full-scale, best results will be obtained by setting the amplitude near full-scale and using external
attenuators on the output.
3) Customized jigs available upon request.
4) The amplitude settings should not be relied upon for any degree of accuracy, because the dynamics of the device under test can affect the actual
generated waveforms. Amplitude settings should always be verified by oscilloscope measurements.
5) Thus the diode must come to forward steady-state within 5 ns.
6) The diode must have a breakdown voltage exceeding these amplitude limits. Contact Avtech for special arrangements if IMAX × 5 Ω > VBR.
7) The full forward pulse width is 2 us, but the reverse pulse is super-imposed on the forward pulse 5 ns after the start of the forward pulse.
8) Increases to 4.5 ns for units with the -DIPFP option, due to the switching relay inductance.
9) Depends on the parasitic inductance of the DUT and its leads.
1 ) 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 17 25:2 5 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 18
This device complies with part 18 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 (in[email protected]m) 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 (info@avtechpulse.com) if you require assistance.
EC DECLARATION OF CONFORMITY
We Avtech Electrosystems Ltd.
P.O. Box 512 , LCD Merivale
Ottawa, Ontario
Canada K2C 3H5
declare that this pulse generator meets the intent of Directive 2 4/1 8/EG for
Electromagnetic Compatibility. Compliance pertains to the following specifications as
listed in the official Journal of the European Communities:
EN 5 81-1 Emission
EN 5 82-1 Immunity
9
and that this pulse generator meets the intent of the Low Voltage Directive 2 6/95/EC.
Compliance pertains to the following specifications as listed in the official Journal of the
European Communities:
EN 61 1 -1:2 1 Safety requirements for electrical equipment for
measurement, control, and laboratory use
DIRECTIVE 2 11/65/EU (RoHS)
We Avtech Electrosystems Ltd.
P.O. Box 512 , 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 2 11/65/EU of the European
Parliament and of the Council of 8 June 2 11 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) < 1 ppm ( .1% by mass)
Mercury (Hg) < 1 ppm ( .1% by mass)
Hexavalent Chromium (Cr6+) < 1 ppm ( .1% by mass)
Polybrominated Biphenyls (PBB) < 1 ppm ( .1% by mass)
Polybrominated Diphenyl ethers (PBDE) < 1 ppm ( .1% by mass)
Cadmium (Cd) < 1 ppm ( . 1% by mass)
Bis(2-ethylhexyl) phthalate (DEHP) < 1 ppm ( .1% by mass)
Butyl benzyl phthalate (BBP) < 1 ppm ( .1% by mass)
Dibutyl phthalate (DBP) < 1 ppm ( .1% by mass)
Diisobutyl phthalate (DIBP) < 1 ppm ( .1% by mass)
DIRECTIVE 2 2/96/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 2 2/96/EC of the European Union and local
1
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