1. Manuals
  2. Brands
  3. Avtech Manuals
  4. Measuring Instruments
  5. AVR-EB2A-B
  6. Instructions manual

Avtech AVR-EB2A-B Instructions Manual

± 100 ma "condition a" reverse recovery measurement system
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
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
Tel: 888-670-8729 (USA & Canada) or +1-613-686-6675 (Intl)
BOX 5120, LCD MERIVALE
http://www.avtechpulse.com/
Fax: 800-561-1970 (USA & Canada) or +1-613-686-6679 (Intl)
OTTAWA, CANADA K2C3H5
INSTRUCTIONS
MODEL AVR-EB2A-B
± 100 mA "CONDITION A"
REVERSE RECOVERY
MEASUREMENT SYSTEM
SERIAL NUMBER: ____________

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AVR-EB2A-B and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Avtech AVR-EB2A-B

Summary of Contents for Avtech AVR-EB2A-B

  • Page 1 Tel: 888-670-8729 (USA & Canada) or +1-613-686-6675 (Intl) BOX 5120, LCD MERIVALE http://www.avtechpulse.com/ Fax: 800-561-1970 (USA & Canada) or +1-613-686-6679 (Intl) OTTAWA, CANADA K2C3H5 INSTRUCTIONS MODEL AVR-EB2A-B ± 100 mA “CONDITION A” REVERSE RECOVERY MEASUREMENT SYSTEM SERIAL NUMBER: ____________...

  • Page 2: Warranty

    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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS WARRANTY........................2 TECHNICAL SUPPORT....................2 TABLE OF CONTENTS....................3 INTRODUCTION.......................6 SPECIFICATIONS......................8 SPECIFICATIONS – INCLUDED TEST JIGS..............9 REGULATORY NOTES....................10 FCC PART 18........................10 EC DECLARATION OF CONFORMITY................10 DIRECTIVE 2011/65/EU (RoHS)..................11 DIRECTIVE 2002/96/EC (WEEE)..................11 FIRMWARE LICENSING.......................12 INSTALLATION......................13 VISUAL CHECK........................13 POWER RATINGS........................13 CONNECTION TO THE POWER SUPPLY................13 PROTECTION FROM ELECTRIC SHOCK................14 ENVIRONMENTAL CONDITIONS..................15...
  • Page 4 INCORRECT ORIENTATION....................27 STANDARD TEST JIG MECHANICAL ASPECTS............28 AVX-CA-AXPOST TEST JIG....................28 SPECIALTY TEST JIGS....................30 AVX-CA-AR1 TEST JIG......................30 AVX-CA-SOD123-QTKA.......................33 AVX-CA-KMPB-TO39......................35 AVX-CA-SOT23B........................36 TYPICAL RESULTS.......................41 1N4148 RESULTS........................41 MQ1N5811US RESULTS......................43 1N5819 RESULTS........................45 WITH NO DUT........................47 TROUBLESHOOTING....................49 PROGRAMMING YOUR PULSE GENERATOR............50 KEY PROGRAMMING COMMANDS..................50 ALL PROGRAMMING COMMANDS..................51 MECHANICAL INFORMATION..................53 TOP COVER REMOVAL.......................53...
  • Page 5 TEST JIG WIRING (AVX-CA-AXPOST)................65 TEST JIG WIRING (AVX-CA-AR1)..................66 TEST JIG WIRING (AVX-CA-SOD123-QTKA)..............67 TEST JIG WIRING (AVX-CA-KMBP-TO39)................68 TEST JIG WIRING (AVX-CA-SOT23B)................69 CUSTOMIZED DAUGHTERBOARD (AVX-CA-SOT23B).............70 PERFORMANCE CHECK SHEET.................71 Manual Reference: /fileserver2/officefiles/instructword/avr-eb/avr-eb2a-b/AVR-EB2A-B,ed8.odt. Last modified March 11, 2019. Copyright © 2019 Avtech Electrosystems Ltd, All Rights Reserved.

  • Page 6: Introduction

    The AVR-EB2A-B generates a forward DC bias current of +10 to +100 mA. A 200 ns wide negative pulse is superimposed onto the signal, to generate reverse currents of up to -100 mA.
  • Page 7 By observing the current waveform through the DUT, the reverse recovery time may be determined. The AVR-EB2A-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.

  • Page 8: Specifications

    Amplitude settings should always be verified by oscilloscope measurements. 5) Thus the diode must come to forward steady-state within 500 ns. 6) The diode must have a breakdown voltage exceeding these amplitude limits. Contact Avtech for special arrangements if I × 50Ω > V 7) The full forward pulse width is 2 us, but the reverse pulse is super-imposed on the forward pulse 500 ns after the start of the forward pulse.

  • Page 9: Specifications - Included Test Jigs

    < 0.4 ns time constant compared to the waveform at the mainframe output. NOTE: All of the above jigs are suitable for light research and development use. Consult Avtech...

  • Page 10: Regulatory Notes

    If interference is observed, check that appropriate well-shielded cabling is used on the output connectors. Contact Avtech (info@avtechpulse.com) 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.

  • Page 11: Directive 2011/65/Eu (Rohs)

    < 100 ppm (0.01% 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 laws) on behalf of the customer, as provided for under Article 9 of Directive 2002/96/EC.

  • Page 12: Firmware Licensing

    compliance. Normally, such responsibilities with lie with the representative, unless other arrangements (under Article 9) have been made. Requirements for WEEE compliance may include registration of products with local governments, reporting of recycling activities to local governments, and financing of recycling activities.

  • Page 13: Installation

    INSTALLATION VISUAL CHECK After unpacking the instrument, examine to ensure that it has not been damaged in shipment. Visually inspect all connectors, knobs, liquid crystal displays (LCDs), and the handles. If the instrument has been damaged, file a claim immediately with the company that transported the instrument.

  • Page 14: Protection From Electric Shock

    connected to a properly grounded outlet. The instrument chassis is connected to the ground wire in the power cord. The table below describes the power cord that is normally supplied with this instrument, depending on the destination region: Destination Region Description Option Manufacturer...

  • Page 15: Environmental Conditions

    5. Do not attempt any repairs on the instrument, beyond the fuse replacement procedures described in this manual. Contact Avtech technical support (see page 2 for contact information) if the instrument requires servicing. Service is to be performed solely by qualified service personnel.

  • Page 16: Fuses

    FUSES This instrument contains four fuses. All are accessible from the rear-panel. Two protect the AC prime power input, and two protect the internal DC power supplies. The locations of the fuses on the rear panel are shown in the figure below: Fuses #1 and #2 Fuse #4 Fuse #3...

  • Page 17: Dc Fuse Replacement

    DC FUSE REPLACEMENT The DC fuses may be replaced by inserting the tip of a flat-head screwdriver into the fuse holder slot, and rotating the slot counter-clockwise. The fuse and its carrier will then pop out. FUSE RATINGS The following table lists the required fuses: Recommended Replacement Part Nominal Fuses...

  • Page 18: Front Panel Controls

    FRONT PANEL CONTROLS 1. POWER Switch . This is the main power switch. When turning the instrument on, there is normally a delay of 10 seconds before anything is shown on the main display, as the internal operating system boots up. If the main menu does not appear after 30 seconds, turn off the instrument and leave it off for at least 60 seconds before applying power again.
  • Page 19 detail. 5. KEYPAD . Control Name Function MOVE This moves the arrow pointer on the display. CHANGE This is used to enter the submenu, or to select the operating mode, pointed to by the arrow pointer. ×10 If one of the adjustable numeric parameters is displayed, this increases the setting by a factor of ten.

  • Page 20: Rear Panel Controls

    REAR PANEL CONTROLS GATE TRIG RS-232 CONTROL GPIB Note: some connectors may be in different positions than shown above, depending on the exact combination of options ordered. 1. AC POWER INPUT . An IEC-320 C14 three-pronged recessed male socket is provided on the back panel for AC power connection to the instrument.
  • Page 21 Ohm terminator is suggested for this purpose.) 6. GPIB Connector . A standard GPIB cable can be attached to this connector to allow the instrument to be computer-controlled. See the “Programming Manual for -B Instruments” for more details on GPIB control. 7.

  • Page 22: Timing Control

    TIMING CONTROL MAINFRAME PULSE OUTPUT This instrument can be triggered by its own internal clock or by an external TTL trigger signal. In either case, two pulse signals respond to the trigger: V (on the mainframe PULSE OUT connector) and SYNC. The amplitude of V is adjustable up to -24V.

  • Page 23: Trigger Modes

    > 50 ns TRIG TTL LEVELS (external input) (0V and 3V-5V) PROPAGATION DELAY (FIXED) 100 ns, FIXED SYNC OUT 3V, FIXED DELAY > 0 PULSE WIDTH AMPLITUDE, VARIABLE PULSE Figure C As before, if the delay is negative, the order of the SYNC and OUT pulses is reversed. The delay, pulse width, and frequency (when in the internal mode), of the OUT pulse can be varied with front panel controls or via the GPIB or RS-232 computer interfaces.

  • Page 24: Gating Modes

    GATING MODES Triggering can be suppressed by a TTL-level signal on the rear-panel GATE connector. The instrument can be set to stop triggering when this input high or low, using the front- panel gate menu or the appropriate programming commands. When gated, the output will complete the full pulse width if the output is high, and then stop triggering.

  • Page 25: Basic Amplitude Control

    BASIC AMPLITUDE CONTROL The basic test arrangement for the AVR-EB2A-B is shown in the figure below. The OUT output on the instrument mainframe is connected to the IN input on the test jig (model AVX-CA-AXPOST, or a customized variant) using the supplied coaxial cable, and the control cable is connected using the supplied DB-9 cable.

  • Page 26: Setting The Amplitude Levels

    Instead the voltage at the OUT terminal on the test jig should be measured with a calibrated oscilloscope. CURRENT MONITOR The AVR-EB2A-B monitors the actual forward bias current through the DUT. If the DUT has been incorrectly seated, and the forward bias current can not flow properly, the...

  • Page 27: Incorrect Orientation

    instrument will detect this problem, display an error message, and turn off the output. If this occurs, check the seating of the DUT and close both lids again. The monitored forward current level is displayed on the front panel LCD, for the user's convenience.

  • Page 28: Standard Test Jig Mechanical Aspects

    STANDARD TEST JIG MECHANICAL ASPECTS AVX-CA-AXPOST TEST JIG One AVX-CA-AXPOST test jig is normally supplied with the mainframe, unless the customer has requested a different or additional test jigs. The AVX-CA-AXPOST has easy-to-use spring-loaded push-posts for axial packages with body length of up to 0.25” (and diameters up to 0.5”), including DO-35, DO-41 and Microsemi Axial Type E packages (0.185"...
  • Page 29 The AVR-EB2A-B monitors the actual forward bias current through the DUT. If the DUT has been incorrectly seated, and the forward bias current can not flow properly, the instrument will detect this problem, display an error message, and turn off the output. If this occurs, check the seating of the DUT and close both lids again.

  • Page 30: Specialty Test Jigs

    SPECIALTY TEST JIGS AVX-CA-AR1 TEST JIG The AVX-CA-AR1 test jig has been designed to accept a variety of axial and SQMELF packages. It has been designed specifically to accept: 1. Microsemi "Type E" axial packages (used in the 1N5418 and other devices) 2.
  • Page 31 Insert a diode into one of the 4 “pockets”. The two gold contact pins are visible in each pocket; the device must be aligned with these pins. A DO-41 package is shown installed below:...
  • Page 32 Or, shown in a closer view: The remaining photos shown the different types of SQMELF packages installed:...

  • Page 33: Avx-Ca-Sod123-Qtka

    The four pockets are wired in parallel. Only one DUT may be installed at a time, or the resulting waveforms will be incorrect. Once the DUT is installed in the appropriate pocket, close the tan-colored socket lid and the black main lid. Both must be closed for proper operation. The tan-colored DUT socket in the AVX-CA-AR1 is a special-order Aries Electronics (http://www.arieselec.com) part, part number 9890-122-23.
  • Page 34 Raise the green lever on the left. This will raise the nylon screw over the DUT area on the right: Using tweezers, position a DUT in the cavity of the raised circuit boards. Slots are provided for tweezer access. The DUT will rest on two spring pins, one contacting each DUT pad:...

  • Page 35: Avx-Ca-Kmpb-To39

    The cathode should be on the right. The anode should be on the left. Lower the green lever on the left. This will lower the nylon screw over the DUT area on the right, and gently lock the DUT in place in the cavity: (It is possible to use a screwdriver to adjust the positioning of the nylon screw.

  • Page 36: Avx-Ca-Sot23B

    anode and cathode pins. Two clearance holes (rather than a pin socket) are provided to accommodate the third pin. The method of connecting the AVX-CA-KMPB-TO39 test jig to the pulse mainframe and to the oscilloscope is identical to that for the standard test jig (the AVX-CA-AXPOST, described in the previous section).
  • Page 37 The basic jig, without a daughterboard, is shown below: Five pairs of pin sockets are located near the center of the jig. The anode signal is present on the central pair. The cathode signal is present on two pairs, on the right side (they are wired in parallel).
  • Page 38 The top and bottom sides of the daughterboard are shown below: Pin post pairs. Footprint for These plug optional shorting into the jig. jumper (1 of 3) number (1 of 3) The three pin post pairs are labeled “1”, “2”, and “3” on the top side, corresponding to the pin number of the SOT23 footprint that the pair connects to.
  • Page 39 Pin Number Pin Number Unused Photo of Anode of Cathode Pin* * The unused pin may be shorted to another pin, using the provided jumper footprints.
  • Page 40 Heavy usage may wear out the pin sockets or the associated soldering. Replacement pin sockets are available from Mill-Max (https://www.mill-max.com), part number 834- 43-002-10-001000. The posts used on the AVX-CA-SOT23B daughterboard are AMP part number 4- 103321-0-02 (or a trimmed portion of part number 4-103321-0). The Gerber and drill CAM files for the daughterboard are available for download here: http://www.avtechpulse.com/semiconductor/avr-eb2a/#support_files The user may wish to produce additional daughterboards as needed.

  • Page 41: Typical Results

    5 ns when measured with I = +10 mA and I = -10 mA, measuring t at -1 mA. Using the AVR-EB2A-B under these conditions, the following waveform is obtained: The measured t is 2.8 ns, well below the maximum specified value of 5 ns. The vertical scale of 20 mV/div corresponds to a device current scale of 4 mA / div.
  • Page 42 If the test currents are boosted by a factor of ten to +100 mA and -100 mA, the t increases to 7.6 ns: The installed DUT is shown below:...

  • Page 43: Mq1N5811Us Results

    MQ1N5811US RESULTS The miltary-qualified MQ1N5811US is a high-speed higher-current rectifier in a Microsemi Type E square MELF package (also known as the D-5B package). Testing with I = +10 mA and I = -10 mA yields a t of 86 ns: If the test currents are boosted by a factor of ten to +100 mA and -100 mA, the t decreases to 53 ns:...
  • Page 44 The installed DUT is shown below:...

  • Page 45: 1N5819 Results

    1N5819 RESULTS The 1N5819 is a DO-41 axial-packaged Schottky rectifier. Testing with I = +10 mA and = -10 mA yields a t of 35 ns: If the test currents are boosted by a factor of ten to +100 mA and -100 mA, the t decreases to 14 ns:...
  • Page 46 The installed DUT is shown below:...

  • Page 47: With No Dut

    WITH NO DUT If a piece of busbar wire is installed in the axial pocket, the basic speed of the test socket may be judged. With I = +100 mA and I = -100 mA, a 10%-90% switching time of 709 ps observed: The inductance of the busbar and the socket degrades the transition time of the pulse from the mainframe.
  • Page 48 It is still below 300 ps at +10 mA / -10 mA as well:...

  • Page 49: Troubleshooting

    TROUBLESHOOTING If you obtain “strange” output waveforms, or unexpected values of t , keep these points in mind: 1) The test jig output must be terminated with 50 Ohms. This is normally the input impedance of the oscilloscope, or the oscilloscope / attenuator combination. 2) An attenuator may be required on the oscilloscope to avoid overdriving the oscillscope input, especially for sampling oscilloscopes.

  • Page 50: Programming Your Pulse Generator

    PROGRAMMING YOUR PULSE GENERATOR KEY PROGRAMMING COMMANDS The “Programming Manual for -B Instruments” describes in detail how to connect the pulse generator to your computer, and the programming commands themselves. A large number of commands are available; however, normally you will only need a few of these.

  • Page 51: All Programming Commands

    ALL PROGRAMMING COMMANDS For more advanced programmers, a complete list of the available commands is given below. These commands are described in detail in the “Programming Manual for -B Instruments”. (Note: this manual also includes some commands that are not implemented in this instrument.
  • Page 52 :SOURce INTernal | EXTernal | MANual | HOLD | IMMediate *CLS [no query form] *ESE <numeric value> *ESR? [query only] *IDN? [query only] *OPC *SAV 0 | 1 | 2 | 3 [no query form] *RCL 0 | 1 | 2 | 3 [no query form] *RST [no query form]...

  • Page 53: Mechanical Information

    There are no user-adjustable internal circuits. For repairs other than fuse replacement, please contact Avtech (info@avtechpulse.com) to arrange for the instrument to be returned to the factory for repair. Service is to be performed solely by qualified service personnel.

  • Page 54: Maintenance

    MAINTENANCE REGULAR MAINTENANCE This instrument does not require any regular maintenance. On occasion, one or more of the four rear-panel fuses may require replacement. All fuses can be accessed from the rear panel. See the “FUSES” section for details. CLEANING If desired, the interior of the instrument may be cleaned using compressed air to dislodge any accumulated dust.

  • Page 55: Wiring Diagrams

    WIRING DIAGRAMS WIRING OF AC POWER M ains circuits - haz ardous live . Do not attempt any repairs on this instrument beyond the fuse replacement procedures described in the manual . Contact Av tech if the instrument A3 - BLACK requires serv icing.

  • Page 56: Pcb 158R4 - Low Voltage Power Supply

    PCB 158R4 - LOW VOLTAGE POWER SUPPLY...

  • Page 57: Pcb 168B - High Voltage Dc Power Supply

    PCB 168B - HIGH VOLTAGE DC POWER SUPPLY 1 N4 9 3 7 1 N4 9 3 7 HV WA RN ING HV WA RN ING 6 4 04 4 5 -2 6 4 04 4 5 -2 1 N49 3 7 1 N4 9 3 7 1 0 0 OY R1 0...

  • Page 58: Pcb 210B - Interlock And Control

    1 N 4 1 4 8 INA 1 1 7 1 N 4 1 4 8 Q1 B AVR-EB2A-B INTERLOCK AND CONTROL MPQ2 2 2 2 1 N 4 1 4 8 -1 5 V 0 . 1 u F...

  • Page 59: Pcb 116D - Current Monitor

    PCB 116D - CURRENT MONITOR S M A 1 S M A - V E R T 6 4 0 4 5 6 - 4 C O N 9 R 1 6 C H O O S E T H IS R E S I S T O R T O G E T + / -3 V M A X O U T U 1 3 B U 1 3 A Z E R O ( N O T U S E D O N - E M R A U N I T S )

  • Page 60: Pcb 217A - Relay Driver

    PCB 217A - RELAY DRIVER K E Y S T O N E 6 2 1 B R A C K E T P S 7 1 0 A - 1 A P S 7 1 0 A - 1 A K E Y S T O N E 6 2 1 B R A C K E T 1 .

  • Page 61: Pcb 104F - Keypad / Display Board, 1/3

    PCB 104F - KEYPAD / DISPLAY BOARD, 1/3 Amp 5 4 9 9 9 1 0 -1 , 1 0 p in strai g h t h ead er LC D-BU TT LC D-BU TT. SCH SD A SD A SC L SC L GN D...

  • Page 62: Pcb 104F - Keypad / Display Board, 2/3

    PCB 104F - KEYPAD / DISPLAY BOARD, 2/3 U4 A VC C C1 0 VC C BU T1 VC C 2 . 2 u F C1 5 C1 3 0 . 1 u F 0 . 1 u F 0 . 1 u F 0 .

  • Page 63: Pcb 104F - Keypad / Display Board, 3/3

    PCB 104F - KEYPAD / DISPLAY BOARD, 3/3 VC C VC C 0 . 1 u F 2 . 2 u F GN D VC C VC C VC C SD A SD A SC L SC L GN D PA D3 PA D4 PC F8 5 7 4 AN (MU ST HA VE "A"...

  • Page 64: Main Wiring

    MAIN WIRING -15 V +1 5V +5 V PCB10 4D KEYPAD BOARD - SMALL +2 4V, NO OLO 18 K || 47K OY +2 4V, NO OLO +2 4, NO OLO +5 V NSY POS OLO CONT ROL - DB9 +5 V REG POS OLO 20 AWG...

  • Page 65: Test Jig Wiring (Avx-Ca-Axpost)

    TEST JIG WIRING (AVX-CA-AXPOST)

  • Page 66: Test Jig Wiring (Avx-Ca-Ar1)

    TEST JIG WIRING (AVX-CA-AR1) K E Y P A D 1 S W 1 S W 1 R E F L - C R E F L - E B I A S + N / C N / C R E F L - A R E F L - K 1 0 P I N H E A D E R , O N B O T T O M...

  • Page 67: Test Jig Wiring (Avx-Ca-Sod123-Qtka)

    TEST JIG WIRING (AVX-CA-SOD123-QTKA)

  • Page 68: Test Jig Wiring (Avx-Ca-Kmbp-To39)

    TEST JIG WIRING (AVX-CA-KMBP-TO39) K E Y P A D 1 S W 1 S W 1 R E F L - C R E F L - E B I A S + N / C N / C R E F L - A R E F L - K 1 0 P I N H E A D E R , O N B O T T O M...

  • Page 69: Test Jig Wiring (Avx-Ca-Sot23B)

    TEST JIG WIRING (AVX-CA-SOT23B)

  • Page 70: Customized Daughterboard (Avx-Ca-Sot23B)

    CUSTOMIZED DAUGHTERBOARD (AVX-CA-SOT23B)

  • Page 71: Performance Check Sheet

    PERFORMANCE CHECK SHEET...

Table of Contents