Avtech AVR-D3-B Instructions Manual Download

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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: 14117

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

[email protected]

http://www.avtechpulse.com/

Tel: 888-670-8729 (USA & Canada) or +1-613-686-6675 (Intl)

Fax: 800-561-1970 (USA & Canada) or +1-613-686-6679 (Intl)

BOX 5120, LCD MERIVALE

OTTAWA, CANADA K2C3H5

Summary of Contents for AVR-D3-B

Page 1: ...L SERIAL NUMBER 14117 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 or 1 613 686 6675 Intl Fax 800 561 1970 USA Canada or 1 613 686 6679 Intl BOX 5120 LCD MERIVALE OTTAWA CANADA K2C3H5 ...

Page 2: ...lace 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 888 670 8729 USA Canada or 1 613 686 667...

Page 3: ...L CHECK 12 POWER RATINGS 12 CONNECTION TO THE POWER SUPPLY 12 PROTECTION FROM ELECTRIC SHOCK 13 ENVIRONMENTAL CONDITIONS 14 LABVIEW 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 L...

Page 4: ...RFERENCE 33 MAINTENANCE 34 REGULAR MAINTENANCE 34 CLEANING 34 WIRING DIAGRAMS 35 WIRING OF AC POWER 35 PCB 158R5 LOW VOLTAGE POWER SUPPLY 36 PCB 168C HIGH VOLTAGE POWER SUPPLY 37 PCB 228C NEGATIVE UV CONTROL PCB 38 PCB 241C DUAL PW PCB 39 PCB 335A DUAL TRIGGER ENCODER 40 PCB 104G KEYPAD DISPLAY BOARD 41 MAIN WIRING 42 PERFORMANCE CHECK SHEET 43 Manual Reference fileserver2 officefiles instructword...

Page 5: ... 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 MS1 OUT MON RMON 50Ω VOUT to oscilloscope VCC 30V 1 25Ω 4Ω VBB 4V 1N914 ...

Page 6: ...e 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 automati...

Page 7: ...ve The fourth transition will be much slower Pulse repetition frequency 1 Hz to 10 Hz adjustable or single shot Supplied test jigs None user supplied Propagation delay 150 ns Ext trig in to pulse out Jitter 100 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 1 second sync out to pulse out Sync output 3 Volts 100 ns w...

Page 8: ...l 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 1 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...

Page 9: ...ng 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 no...

Page 10: ...ation 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 1000 ppm 0 1 by mass Mercury Hg 1000 ppm 0 1 by mass Hexavalent Chromium Cr6 1000 ppm 0 1 by mass Polybrominated Biphenyl...

Page 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 activities FIRMWARE LICENSING Instruments with firmware versions 5 00 or higher use open source software internally Some of this software requires that the source code be made available to the user as a cond...

Page 12: ...rmal single phase supply CONNECTION TO THE POWER SUPPLY An IEC 320 three pronged recessed male socket is provided on the back panel for AC power connection to the instrument One end of the detachable power cord that is supplied with the instrument plugs into this socket The other end of the detachable power cord plugs into the local mains supply Use only the cable supplied with the instrument The ...

Page 13: ...perators are prevented access and or are insulated from every connection point In some cases connections must be exposed to potential human contact Operators must be trained to protect themselves from the risk of electric shock This instrument is intended for use by qualified personnel who recognize shock hazards and are familiar with safety precautions required to avoid possibly injury In particu...

Page 14: ... C decreasing linearly to 50 relative humidity at 40 C 5 Mains supply voltage fluctuations up to 10 of the nominal voltage 6 no pollution or only dry non conductive pollution LABVIEW DRIVERS A LabVIEW driver for this instrument is available for download on the Avtech web site at http www avtechpulse com labview A copy is also available in National Instruments Instrument Driver Library at http www ...

Page 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 may then be extracted using a small flat head screwdriver as shown below 15 Fuse Drawer Pry out the fuse drawer using a screwdriver Fuses 1 and 2 AC fuses Fuse 4 DC fuse Fuse 3 DC fuse ...

Page 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 1 0A 250V Time Delay 5 20 mm 0218001 HXP F2419 ND 4 DC N A 1 6A 250V Time Delay 5 20 mm 021801 6HXP F2424 ND The recommended fuse manufacturer is Littelfuse http www littelfuse com Replacement fuses may be easil...

Page 17: ...s after which the instrument will attempt to re enable the output i e light green for about 1 second If the overload condition persists the output will be disabled again i e light yellow for another 5 seconds If the overload condition has been removed the instrument will resume normal operation This overload indicator may flash yellow briefly at start up This is not a cause for concern Note that t...

Page 18: ...e numeric parameters is displayed this increases the setting by a factor of ten 10 If one of the adjustable numeric parameters is displayed this decreases the setting by a factor 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 ADJUST knob In the ex...

Page 19: ...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 unconnected When set to active high mode this input is pulled down to ground by a 1 kΩ resistor When set to active low mode this input is pulled up to 5V by a 1 kΩ resistor 5 TRIG This TTL level 0 and 5V logic input c...

Page 20: ...for B Instruments for more details on RS 232 control 8 Network Connector This Ethernet connector allows the instrument 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 MON Connector This output may be used to sense the voltage drop across the main output resistance thus providing a measure of...

Page 21: ...e used to trigger oscilloscopes or other measurement systems When the delay is set to a positive value the SYNC pulse precedes the OUT pulse When the delay is set to a negative value the SYNC pulse follows the OUT pulse These pulses are illustrated below with internal triggering The next figure illustrates the relationship between the signal when an external TTL level trigger is used 21 V1 1V to 2...

Page 22: ...ternal TTL level clock on the back panel TRIG connector Manual Trigger the instrument is triggered by the front panel SINGLE PULSE pushbutton Hold Trigger the instrument is 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 details 22 V1 1V to 250V V2 1V to 2...

Page 23: ...ng 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 23 ...

Page 24: ...ut impedance present in the AVR D3 B will back match the transmission line resulting in improved performance USE LOW INDUCTANCE LOADS Lenz s Law predicts that for an inductive voltage spike will be generated when the current through an inductance changes Specifically VSPIKE L dILOAD dt where L is the inductance ILOAD is the load current change and t is time For this reason it is important to keep ...

Page 25: ... to a V1 setting for VPULSE of V1 ROUT 4Ω 2 5A 0 7V 135 7V Under these conditions the voltage at VIN will be approximately VIN 4Ω 2 5A 0 7V 10 7V Before the turn on state the input to the biased off transistor is specified to be 2V in Figure 2 of MIL PRF 19500 464G Thus we set V2 2V on the AVR D3 B Since no current flows in the reverse state in this test there is no voltage drop With the PRF set t...

Page 26: ...T As with the turn on test Table 1 of MIL PRF 19500 464G specifies that the turn off tests should be performed with a forward base current of 2 5A This corresponds to a V1 setting for VPULSE of V1 ROUT 4Ω 2 5A 0 7V 135 7V Under these conditions the voltage at VIN will be approximately VIN 4Ω 2 5A 0 7V 10 7V The reverse base current is specified to be 2 5A for the turn off test This corresponds to ...

Page 27: ...S to be 2 0 us or less so this particular device meets the test requirements The photo below is the same except that the cursors measure the collector 10 90 rise time corresponding to the turn off time tOFF tOFF is measured as 800 ns MIL PRF 19500 464G specifies tOFF to be 3 0 us or less so this particular device meets the test requirements An On Semi 2N5686G datecode BM1129 transistor was used fo...

Page 28: ... above show the 50Ω output impedance produces good results with MIL PRF 19500 464G Some tests call for a 51Ω resistance to ground to be added at VIN This may help suppress any observed transmission line ringing when the transistor switches off becoming an open circuit mismatching the transmission line TRANSITION TIME NOTES The internal pulse generator has a 20 80 switching time of 20 ns or less Th...

Page 29: ...nt 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 10 us sets the delay to 10 us pulse width1 10 us sets the positive pulse width to 10 us pulse width2 30 us sets the negative pulse width to 30 us volt ampl1 100 sets the positive pulse amplitude to 100 V volt ampl2 200 sets the negative pulse a...

Page 30: ...Rce 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 TRIPped query only STATUS OPERation EVENt query only always returns 0 CONDition query only always returns 0 ENABle numeric value implemented but not useful QUEStionable EVENt query only always returns 0 ...

Page 31: ...ce 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 STB query only TST query only WAI no query form 31 ...

Page 32: ... NOTES Application notes are available on the Avtech web site at http www avtechpulse com appnote MANUAL FEEDBACK Please report any errors or omissions in this manual or suggestions for improvement to info avtechpulse com Thanks 32 ...

Page 33: ... 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 the cover removed RACK MOUNTING A rack mounting kit is available The R5 rack mount kit may be installed after first removing the one Phillips screw on the side panel adjacent to the front handle ELECT...

Page 34: ...ses 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 See the TOP COVER REMOVAL section for instructions on accessing the interior No other cleaning is recommended 34 ...

Page 35: ...GKEYPAD Ch a ssisg ro u ndpo 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 DC FAN FAN1 P9768 ND FANNO T M o lex19 0 73 00 13rin gte rm ina l 8 M o lex19 0 02 00 01 0 25 0 x0 0 32 P ro tectiveco nd uctorterm in al M o lex19 0 02 00 09 0 18 7 x0 0 32 P rim a ry e arthg rou nd S ...

Page 36: ...PCB 158R5 LOW VOLTAGE POWER SUPPLY ...

Page 37: ...PCB 168C HIGH VOLTAGE POWER SUPPLY ...

Page 38: ...PCB 228C NEGATIVE UV CONTROL PCB ...

Page 39: ...PCB 241C DUAL PW PCB ...

Page 40: ...PCB 335A DUAL TRIGGER ENCODER ...

Page 41: ...PCB 104G KEYPAD DISPLAY BOARD ...

Page 42: ... GND1 GND2 SSR N C GND3 5V LV N C HV HV OUT MON TR IGN M 1 AVR D3 PG CONN2 OUT P5 P6 N6 P4 N4 N5 G G G G R7 R8 R9 R1 0 BD1 PCB183A P CHSGND ALLSIXCAPS 47uF 450V R7 R10 BO T 68KOY HV2 USE1 2 ST ANDOFFS 5V 15VNSY CONN4 GATE CONN5 EXTTRIG CONN3 SYNC CHANG ES REQ UIREDO NPCB295F 10 Hz PRFLIM INST ALLC9 6 8 uFCER OV TEMP AUX A K JIG BD3 PCB104GKEYPAD OLOGND POSOLO CONN1 M ON HV1 T OR10PADCLO SESTT OCAL...

Page 43: ...PERFORMANCE CHECK SHEET ...

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