Avtech AVR-EB4-B Скачать руководство пользователя страница 7 | Manualshive

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Avtech AVR-EB4-B Скачать руководство пользователя страница 7

One end of the 50 Ohm resistance is connected to ground, and access to the other end
is provided through a coaxial connector. This output should be terminated with 50
Ohms, and connected to a high-bandwidth (> 400 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 40-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.

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Содержание AVR-EB4-B

Страница 1: ...01 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 888 670 8729 USA Canada o...

Страница 2: ...ace 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 ext...

Страница 3: ...ION 12 VISUAL CHECK 12 POWER RATINGS 12 CONNECTION TO THE POWER SUPPLY 12 PROTECTION FROM ELECTRIC SHOCK 13 ENVIRONMENTAL CONDITIONS 14 FUSES 15 AC FUSE REPLACEMENT 15 DC FUSE REPLACEMENT 16 FUSE RATI...

Страница 4: ...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...

Страница 5: ...IRING AVX TRR HPOST 76 TEST JIG WIRING AVX TRR SCHA AVX TRR MSB MELF 77 TEST JIG WIRING AVX TRR SCHA AVX TRR MSB STUD 78 TEST JIG WIRING AVX TRR BTA 79 TEST JIG WIRING AVX TRR ANB 80 TEST JIG WIRING A...

Страница 6: ...able 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 appn...

Страница 7: ...4 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 pan...

Страница 8: ...quirements 100 240 Volts 50 60 Hz Dimensions H x W x D 100 mm x 430 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...

Страница 9: ...g 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 shield...

Страница 10: ...tion 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 gre...

Страница 11: ...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 activiti...

Страница 12: ...he FUSES section for information about the appropriate AC and DC fuses This instrument is an Installation Category II instrument intended for operation from a normal single phase supply CONNECTION TO...

Страница 13: ...1 01 China GB 1002 1 2099 1 220V 50 Hz AC22 Qualtek 399012 01 PROTECTION FROM ELECTRIC SHOCK Operators of this instrument must be protected from electric shock at all times The owner must ensure that...

Страница 14: ...rformed solely by qualified service personnel ENVIRONMENTAL CONDITIONS This instrument is intended for use under the following conditions 1 indoor use 2 altitude up to 2 000 m 3 temperature 5 C to 40...

Страница 15: ...the fuses on the rear panel are shown in the figure below AC FUSE REPLACEMENT To physically access the AC fuses the power cord must be detached from the rear panel of the instrument The fuse drawer ma...

Страница 16: ...Nominal Mains Voltage Rating Case Size Recommended Replacement Part Littelfuse Part Number Digi Key Stock Number 1 2 AC 100 240V 0 5A 250V Time Delay 5 20 mm 0218 500HXP F2416 ND 3 DC N A 0 8A 250V Ti...

Страница 17: ...utput disabled for about 5 seconds after which the instrument will attempt to re enable the output i e light green for abOUT1 second If the overload condition persists the output will be disabled agai...

Страница 18: ...of ten If one of the adjustable numeric parameters is displayed and this parameter can be both positive or negative this changes the sign of the parameter EXTRA FINE This changes the step size of the...

Страница 19: ...e the triggering of the instrument This input can be either active high or active low depending on the front panel settings or programming commands The instrument triggers normally when this input is...

Страница 20: ...strument to be remotely controlled using the VXI 11 3 ssh secure shell telnet and http web protocols See the Programming Manual for B Instruments for more details 9 PULSE OUT CONNECTOR This BNC connec...

Страница 21: ...2 20 us range The SYNC pulse is a fixed width TTL level reference pulse used to trigger oscilloscopes or other measurement systems When the delay is set to a positive value the SYNC pulse precedes th...

Страница 22: ...ternal mode of the PULSE output can be varied with front panel controls or via the GPIB or RS 232 computer interfaces 22 SYNC OUT generated by the internal oscillator 100 ns FIXED Mainframe OUT DELAY...

Страница 23: ...s set to not trigger at all These modes can be selected using the front panel trigger menu or by using the appropriate programming commands See the Programming Manual for B Instruments for more detail...

Страница 24: ...loscope is used the input should be protected by adding attenuator on the input In the diagram above the supplied 50 Ohm feed through terminator is used to provide the required 50 Ohm resistance The t...

Страница 25: ...The negative voltage AMP2 on the front panel display is related to the reverse diode current by IREVERSE AMP2 50 RDIODE REVERSE where RDIODE REVERSE is the effective resistance of the diode under rev...

Страница 26: ...ctly on the test jig with the test jig disconnected to determine calibrated relationships if desired RC is provided by the user and can be calibrated as required INCORRECT ORIENTATION The instrument a...

Страница 27: ...axial cabling should be used except when hard switching causes noticeable reflections In that case use longer cable lengths Example waveforms are included in the TYPICAL RESULTS section ACCESSIBLE VOL...

Страница 28: ...igs AVX TRR MIX TEST JIG The AVX TRR MIX test jig accepts a range of through hole and axial devices using pin sockets and spring loaded pins It is intended for use with diodes in DO 41 TO 220 DO 204AR...

Страница 29: ...rasitic inductance This jig will also accommodate a number of TO 3 configurations outlined below If the case is connected to the anode and the pin s are used for the cathode the arrangement shown belo...

Страница 30: ...the case It provides the cathode connection The anode pin of interest must be inserted into this socket For dual diode devices rotate the TO 3 package so that the desired diode anode is inserted here...

Страница 31: ...1A 600V DO 41 fast recovery rectifier With the amplitudes set to 100V and 200V and with the mainframe connected to the test jig using a 60 cm coaxial cable the following reverse recovery waveform is o...

Страница 32: ...ransient so the 60 cm coaxial cable was used If the 5 m cable is used the measured recovery time will be too high as shown below 5 V div 1 A div 20 ns div 20 80 switching time shown S N 11713 5m cable...

Страница 33: ...e test jig OUT terminal 5 V div 1 A div 20 ns div 20 80 switching time shown S N 11713 60 cm cable used The above waveform shows the transition from a forward current of 2A to a reverse current of 4A...

Страница 34: ...In this case 73 3 ns was measured for 1A 2A versus 73 0 ns for 2A 4A 1N4004 RESULTS The generic 1N4004 is a very slow 1A 400V DO 41 fast recovery rectifier With the amplitudes set to 100V and 200V the...

Страница 35: ...forward current of 2A to a reverse current of 4A The reverse transient duration exceeds 1 us under these conditions MUR8100E RESULTS The On Semiconductor MUR8100E is a 8A 1000V TO 220 ultrafast rectif...

Страница 36: ...713 60 cm cable used The above waveform shows the transition from a forward current of 2A to a reverse current of 4A The reverse transient lasts for approximately 90 ns under these conditions For this...

Страница 37: ...n diodes are optimized to provide a soft transient with a more gradual decay of the reverse current from its peak value to zero The fast switching time of the hard transient causes transmission line r...

Страница 38: ...th the 60 cm cable the measured recovery time is nearly the same as before but the reflections overlap the transient In this case it is best to use the 5m to clearly separate the two effects recovery...

Страница 39: ...led in the AVX TRR MIX test jig 5 V div 1 A div 20 ns div 20 80 switching time shown S N 11713 5m cable used The 5 m cable was used due to the presence of reflections on the output waveform Unlike mos...

Страница 40: ...unchanged relative to the case when the forward current was 2A The CSD10120 datasheet says this is a majority carrier diode so there is no reverse recovery charge and the results above largely suppor...

Страница 41: ...of 4A The reverse transient lasts for approximately 41 ns under these conditions and then ends rather abruptly causing reflections The 5m cable was used to ensure that the reflections occur well after...

Страница 42: ...marked DUT on the test jig PCB Four fins guide the DUT into the correct position between two spring loaded test pins When the hinged lid is closed a fifth fin attached to the underside of the lid pres...

Страница 43: ...pins Four replacement fins are included with each AVX TRR ANB for this reason The AVX TRR ANB is still available but the AVX TRR AXPOST or AVX TRR HPOST are recommended as superior replacements AVX TR...

Страница 44: ...RR MELF accepts MELF Metal Electrode Leadless Face type SMT packages Certain customized variants including the AVX TRR SCHA and AVX TRR MSB MELF test jigs accept the MELF package as well These test ji...

Страница 45: ...The next photo shows a MELF device installed between the two pins 45 A MELF packaged Device Under Test DUT...

Страница 46: ...example of this arrangement is shown below AVX TRR STUD DO 4 AND DO 5 STUD PACKAGES Certain test jigs such as the AVX TRR STUD accept DO 4 AND DO 5 standard and reverse polarity stud packages This tes...

Страница 47: ...n the other end This diode produced the following results tRR 341 9 ns 5 V div 1 A div 200 ns div 20 80 switching time shown S N 11713 60 cm cable used The photo below shows a reverse polarity DO 5 di...

Страница 48: ...This diode produced the following results tRR 2 595 us 5 V div 1 A div 200 ns div 20 80 switching time shown S N 11713 60 cm cable used 48...

Страница 49: ...BTA TEST JIG The AVX TRR BTA test jig is designed to accept the unusual package shown below The AVX TRR BTA test jig is shown below The DUT is installed by pulling back on the chrome knob as shown be...

Страница 50: ...ont of the two fixed probe points as shown in the photo above Then slowly release the chrome knob allowing the spring loaded PCB to push the DUT into position against the two probe points as shown bel...

Страница 51: ...o generate IF 2A and IR 4A the following results were obtained 5 V div 1 A div 100 ns div tRR at 25 of IR 356 ns S N 11910 60 cm cable used AVX TRR SDA TEST JIG The AVX TRR SDA is designed to accept T...

Страница 52: ...e device pin sockets and spring pins are shown in greater detail below for the TO 5 52 TO 5 Anode Pin Socket TO 5 Cathode Pin Socket Clearance hole for unused TO 5 pin Clearance hole for unused TO 5 p...

Страница 53: ...n the left and the cathode is on the right An example installation is shown below Two TO 3 configuration are possible one with the case connected to the anode and one with the case connected to the ca...

Страница 54: ...wn below For the case anode configuration this layout is used 54 No connection for physical support of the TO 3 pin Pin socket for TO 3 Cathode pin Spring pin connects TO 3 case to Anode No connection...

Страница 55: ...s allows testing of dual diode TO 3 packages by rotating the package to isolate the desired diode The Microsemi UTG8042 is a dual ultrafast rectifier in a TO 3 package with the cathodes connected to t...

Страница 56: ...he AVX TRR 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 de...

Страница 57: ...Then open the tan colored DUT socket by flipping forward the two black latches on the front edge of it 57...

Страница 58: ...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 Or shown in a closer view The remaining photos shown the differ...

Страница 59: ...The four pockets are wired in parallel Only one DUT may be installed at a time or the resulting waveforms will be incorrect 59...

Страница 60: ...hode reversed However incorrect waveforms will be generated The IN OUT and CONTROL connectors are on the rear of the jig below the hinges AVX TRR DO214AC TEST JIG The AVX TRR DO214AC accepts DO214AC t...

Страница 61: ...The next photo shows a DO214AC device Vishay US1M installed in the middle pocket The anode and cathode sides are clearly marked on the PCB 61 A DO214AC packaged Device Under Test DUT...

Страница 62: ...he exact diode switching characteristics 4 If reflections are observed on the output waveform increase the length of the coaxial cable connecting the test jig to the output module so that the reflecti...

Страница 63: ...ent this sequence would be more appropriate rst resets the instrument trigger source hold turns off all triggering output on turns on the output pulse delay 1 us sets the delay to 1 us pulse width1 10...

Страница 64: ...ce FREQuency CW FIXed numeric value SOURce PULSe PERiod numeric value WIDTh numeric value DELay numeric value GATE LEVel HIgh LOw SOURce VOLTage LEVel IMMediate AMPLitude numeric value PROTection TRIP...

Страница 65: ...e 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 SRE numeric value...

Страница 66: ...factory for repair Service is to be performed solely by qualified service personnel Caution High voltages are present inside the instrument during normal operation Do not operate the instrument with t...

Страница 67: ...s recommended TRIGGER DAMAGE The rear panel TRIG input used in the external trigger mode is protected by a diode clamping circuit However the protection circuit is not foolproof and it is possible for...

Страница 68: ...st G 1 G 2 B1 G 4 G 3 L N G X2 CORCO M6EGG 1 2POWERENTRY M O DULE 1 1b 1a 2 2b 2a X1 POWERSWITCHSW325 ND CWINDUSTRIES G RS 4022 0013 A1 BRO WN A2 BLUE A3 BLACK A4 WHITE GR N AMB D1 P395 NDLED GRN AMB...

Страница 69: ...PCB 158R5 LOW VOLTAGE POWER SUPPLY...

Страница 70: ...CB 1 GN D 1 2 4V I N 2 MON 3 EN 4 GN D 5 AD JUST 6 REF OUT 7 GN D 8 GN D 9 OU T 1 0 OU T 1 1 CASE 12 CASE 13 UV1 1 8A24 P20 D1 1N4750 C1 2 2uF CER CC W CW W TOP VIEW R7 5K 3266W R8 100 OY D3 1N4937 1...

Страница 71: ...PCB 104G KEYPAD DISPLAY BOARD...

Страница 72: ...GND GND GND LV SSR EN VC J234 NDSPACERSX2 168 R1 R2 R3 R4 R5 R6 R7 D2 D3 D4 D5 R8 R9 R10 R11 UV1 1 4A24 P30 ME WITHPCB168B 24V OLO CHSGND NOT USED 100OY NOT USED NOT USED 1N4937A 1N4937A NOT USED ZER...

Страница 73: ...I N S O C K E T P 5 E D 5 0 1 1 P I N S O C K E T P 2 E D 5 0 3 1 P I N S O C K E T P 9 E D 5 0 3 1 P I N S O C K E T P 4 E D 5 0 3 1 P I N S O C K E T P 1 E D 5 0 3 1 P I N S O C K E T X 1 4 4 0 M O...

Страница 74: ...ON BOTTOM SW 1 SW 1 RE FL C RE FL E RE FL A RE FL K N C N C N C A K E C U4 HOA1 397 REF LECTIVE S ENSOR X1 4 40 MOUNT X5 4 40 MOUNT X3 4 40 MOUNT X4 4 40 MOUNT TO 50 OHM TERMINA TION HVA HVB HV C R2...

Страница 75: ...0 M O U N T X 3 4 4 0 M O U N T X 4 4 4 0 M O U N T H V A H V B H V C R 5 4 9 9 K 1 R 2 2 2 0 O Y R 1 2 2 0 O Y R 3 2 2 0 O Y R 4 2 2 0 O Y D B 9 P I N 1 D B 9 P I N 2 D B 9 P I N 3 D B 9 P I N 4 D B...

Страница 76: ...TEST JIG WIRING AVX TRR HPOST...

Страница 77: ...E Y P A D 1 1 2 3 4 5 6 7 8 9 1 0 J 1 1 0 P I N H E A D E R S W 1 S W 1 R E F L C R E F L E R E F L A R E F L K N C N C N C A K E C U 1 H O A 1 3 9 7 R E F L E C T I V E S E N S O R R 1 4 9 9 1 R 4 5...

Страница 78: ...X 2 K E Y P A D 1 1 2 3 4 5 6 7 8 9 1 0 J 1 1 0 P I N H E A D E R S W 1 S W 1 R E F L C R E F L E R E F L A R E F L K N C N C N C A K E C U 1 H O A 1 3 9 7 R E F L E C T I V E S E N S O R R 1 4 9 9 1...

Страница 79: ...D R 5 2 2 0 O Y R 6 2 2 0 O Y R 7 2 2 0 O Y R 8 2 2 0 O Y X 6 K E Y S T O N E 6 2 1 B R A C K E T X 7 K E Y S T O N E 6 2 1 B R A C K E T X 8 C H R O M E K N O B L E E V A L L E Y 0 1 W 1 3 0 1 X 1 2...

Страница 80: ...Y S T O N E 6 2 1 B R A C K E T X 1 6 K E Y S T O N E 6 2 1 B R A C K E T X 1 7 K E Y S T O N E 6 2 1 B R A C K E T X 1 8 K E Y S T O N E 6 2 1 B R A C K E T X 1 9 K E Y S T O N E 6 2 1 B R A C K E T...

Страница 81: ...N S O C K E T P 1 E D 5 0 3 1 P IN S O C K E T X 1 4 4 0 M O U N T X 5 4 4 0 M O U N T X 3 4 4 0 M O U N T X 4 4 4 0 M O U N T H V A H V B H V C R 2 4 9 9 K 1 P 4 N O T U S E D P 1 4 0 3 7 8 P IN S O...

Страница 82: ...E F L E R E F L A R E F L K N C N C N C A K E C U 1 H O A 1 3 9 7 R E F L E C T IV E S E N S O R R 1 4 9 9 T O 5 0 O H M T E R M I N A T I O N X 1 4 4 0 M O U N T X 5 4 4 0 M O U N T X 3 4 4 0 M O U N...

Страница 83: ...PERFORMANCE CHECK SHEET 83...

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