Avtech AVO-6-B Instructions Manual Download Page 6 | Manualshive

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HIGH-VOLTAGE PRECAUTIONS

CAUTION:

This instrument provides output voltages as high as 125 Volts under

normal operating conditions, and generates > 125V internally, so extreme caution must
be employed when using this instrument. The instrument should only be used by
individuals who are thoroughly skilled in high voltage laboratory techniques. The
following precautions should always be observed:

1. Keep exposed high-voltage wiring to an absolute minimum.

2. Wherever possible, use shielded connectors and cabling.

3. Connect and disconnect loads and cables only when the instrument is turned off.

4. Keep in mind that all cables, connectors, oscilloscope probes, and loads must have

an appropriate voltage rating.

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.

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Summary of Contents for AVO-6-B

Page 1: ...4040 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: ...CHECK 11 POWER RATINGS 11 CONNECTION TO THE POWER SUPPLY 11 PROTECTION FROM ELECTRIC SHOCK 12 ENVIRONMENTAL CONDITIONS 13 LABVIEW DRIVERS 13 FUSES 14 AC FUSE REPLACEMENT 14 DC FUSE REPLACEMENT 15 FUSE RATINGS 15 FRONT PANEL CONTROLS 16 REAR PANEL CONTROLS 18 GENERAL INFORMATION 20 AMPLITUDE CONTROL 20 MONITOR OPTION 21 LENZ S LAW AND INDUCTIVE VOLTAGE SPIKES 21 BASIC TEST ARRANGEMENT WITHOUT OUTPU...

Page 4: ... AC POWER 36 WIRING OF DC POWER 37 PCB 158R5 LOW VOLTAGE POWER SUPPLY 38 PCB 197J HIGH VOLTAGE DISCHARGE BOARD 39 PCB 183A S AND 183A P CAPACITOR BANKS 40 PCB 156D POLARITY CONTROL BOARD 41 PCB 94H ALARM BOARD 42 PCB 217A RELAY DRIVER 43 PCB 104G KEYPAD DISPLAY BOARD 44 MAIN WIRING P UNITS 45 MAIN WIRING N UNITS 46 MAIN WIRING PN UNITS 47 PERFORMANCE CHECK SHEET 48 Manual Reference fileserver2 off...

Page 5: ...ions 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 The AVO 6HZ B consists of two parts the pulser mainframe and the outpu...

Page 6: ...autions should always be observed 1 Keep exposed high voltage wiring to an absolute minimum 2 Wherever possible use shielded connectors and cabling 3 Connect and disconnect loads and cables only when the instrument is turned off 4 Keep in mind that all cables connectors oscilloscope probes and loads must have an appropriate voltage rating Do not attempt any repairs on the instrument beyond the fus...

Page 7: ...nector9 Optional output device sockets The standard solder terminals can be replaced by a plug in or screw in socket See http www avtechpulse com laser bias avx s1 for examples Contact Avtech info avtechpulse com with your special device mounting requirement Connectors other BNC Power requirements 100 240 Volts 50 60 Hz Dimensions H x W x D Mainframe 100mm x 430 mm x 375mm 3 9 x 17 x 14 8 Output m...

Page 8: ...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 9: ...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 10: ... 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 11: ...n Category II instrument intended for operation from a normal 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 su...

Page 12: ...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 13: ... 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 14: ... 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 14 Fuses 1 and 2 AC fuses Fuse 4 DC fuse Fuse 3 DC fuse Fuse Drawer Pry out the fuse drawer using a screwdriver ...

Page 15: ... DC N A 5 0A 250V Time Delay 5 20 mm 0218005 HXP F2422 ND Units with the PN option require different fuses Fuses Nominal Mains Voltage Rating Case Size Recommended Replacement Part Littelfuse Part Number Digi Key Stock Number 1 2 AC 115 V 1 6A 250V Time Delay 5 20 mm 021801 6HXP F2424 ND 230 V 0 8A 250V Time Delay 5 20 mm 0218 800HXP F2418 ND 3 DC N A 1 6A 250V Time Delay 5 20 mm 021801 6HXP F2424...

Page 16: ...ut disabled for about 5 seconds 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...

Page 17: ... 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 extra fine mode the step size is twenty times finer than in the normal mode This button switches between the two step sizes ADJUST This large knob adjusts the value of any displayed n...

Page 18: ... 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 can be used to trigger the instrument if the instr...

Page 19: ...e VXI 11 3 ssh secure shell telnet and http web protocols See the Programming Manual for B Instruments for more details 9 AMP Connector Optional feature Present on EA units only The output amplitude can be set to track the voltage on this input Zero Volts in corresponds to zero amplitude output and 10V in corresponds to maximum amplitude out This mode is activated by selecting Ext Control on the f...

Page 20: ... measured value of the 11Ω series resistance is recorded in the calibration checksheet at the end of this manual When measuring this resistance four wire measurements should be used Two of the five input connectors may be used to connect to one side of the resistor The other two wires should be connected to the output terminal The functional equivalent circuit of the output module is shown below O...

Page 21: ...module signal inputs This output may be used to monitor the voltage amplitude non invasively The monitor output may be left unconnected if unused LENZ S LAW AND INDUCTIVE VOLTAGE SPIKES This instrument is designed to pulse resistive and diode loads and will exhibit a large output spike when used to drive a load with significant inductance as predicted by LENZ S LAW For this reason the load should ...

Page 22: ...s are too wide a 1 Ohm resistor may be used to sense the current instead However noticeable ringing and 22 OUT CONNECTOR 1 SYNC OUTPUT AC POWER TRIG INPUT AVO 6HZ B MAINFRAME 50 Ω 12 W REAL TIME OSCILLOSCOPE CHANNEL A SCOPE PROBE OUT CONNECTOR 3 OUT CONNECTOR 2 OUT CONNECTOR 4 OUT CONNECTOR 5 50 Ω 12 W CHANNEL B To three other 50 Ohm loads OUT AVTECH AVO 6HZ B MAINFRAME Five 5 foot RG 58 coaxial c...

Page 23: ...ne reflections due to the impedance mismatch The cable will act as an inductance The load should be located as close as possible to the output connector regardless of whether solder terminals or the SMA connector is used If the user wishes to solder something close to this connector the Amphenol 132140 male SMA to solder cup adapter could be used BASIC PULSE CONTROL This instrument can be triggere...

Page 24: ...l triggering and a positive delay If the delay is negative the order of the SYNC and OUT pulses is reversed The next figure illustrates the relationship between the signal when an external TTL level trigger is used 24 SYNC OUT generated by the internal oscillator 100 ns FIXED MAIN OUTPUT PULSE WIDTH DELAY 0 AMPLITUDE VARIABLE 3V FIXED SYNC OUT generated by the internal oscillator 100 ns FIXED MAIN...

Page 25: ...ack 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 GATING MODES Triggering can be suppressed by a TTL level s...

Page 26: ...hronously or asynchronously When set to asynchronous mode the GATE will disable the output immediately Output pulses may be truncated When set to synchronous mode the output will complete the full pulse width if the output is high and then stop triggering No pulses are truncated in this mode 26 ...

Page 27: ...n the rear panel of the mainframe and place the scope probe across one of these loads Set the oscilloscope to trigger externally 2 Turn on the AVO 6HZ B The main menu will appear on the LCD 3 To set the AVO 6HZ B to trigger from the internal clock at a PRF of 100 Hz a The arrow pointer should be pointing at the frequency menu item If it is not press the MOVE button until it is b Press the CHANGE b...

Page 28: ...scilloscope 7 To enable the output a Press the MOVE button until the arrow pointer is pointing at the output menu item b Press the CHANGE button The output submenu will appear c Press MOVE until the arrow pointer is pointing at the ON choice d Press CHANGE to return to the main menu 8 To change the output amplitude a Press the MOVE button until the arrow pointer is pointing at the amplitude menu i...

Page 29: ...l it is b Press the CHANGE button The frequency submenu will appear Rotate the ADJUST knob until the frequency is set at 100 Hz c The arrow pointer should be pointing at the Internal choice If it is not press MOVE until it is d Press CHANGE to return to the main menu 4 To set the delay to 1 us a Press the MOVE button until the arrow pointer is pointing at the delay menu item b Press the CHANGE but...

Page 30: ...enu 8 To change the output amplitude a Press the MOVE button until the arrow pointer is pointing at the amplitude menu item b Press the CHANGE button The amplitude submenu will appear Rotate the ADJUST knob until the amplitude is set at 110V c Observe the oscilloscope You should see 1 us wide pulses The voltage across the current probe Tektronix CT2 or Pearson 2878 should correspond to a measureme...

Page 31: ... 100 sets the amplitude to 100 V output on turns on the output For triggering a single event this sequence would be more appropriate rst resets the instrument trigger source hold turns off all triggering pulse width 1 us sets the pulse width to 1 us output on turns on the output volt 100 sets the amplitude to 100 V trigger source immediate generates a single non repetitive trigger event trigger so...

Page 32: ...c value DCYCle numeric value HOLD WIDTh DCYCle DELay numeric value GATE TYPE ASYNC SYNC LEVel HIgh LOw SOURce VOLTage LEVel IMMediate AMPLitude numeric value EXTernal 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 CONDition query onl...

Page 33: ...ANual 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 33 ...

Page 34: ...gh 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 ELECTROMAGNETIC INTERFERENCE To prevent electromagnetic interference with other equipment all used o...

Page 35: ...is 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 a grossly excessive signal to damage the trigger circuitry on the main timing control board the 4 10 inch board on the right side of the instrument The IC that is most likely to fail under these con...

Page 36: ...o 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 BLK RED WHT X5 VCCLEDM O UNT DC FAN FAN1 P9768 ND FANNO T C3 P UR C4 GRN 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 0...

Page 37: ... GND J1 J2 J3 J4 J6 J10 GND GND GND 20 AWG BD1 PCB158R5 BLU G RN M OUNTWIT H 1 2 ST ANDO FFS P1 N1 15000uF 35Vx 2 R1 R2 O NBOT T OM 1 8K O Y CHSGND R6 C APBAN KC HAR GE 22A Y ONT OP ST R AIGH T ENT H EL EA DST OMINIMIZ ET H EH EIGH T CH AN GESREQUIR EDO NPC B158R 5 POSOLO1 OLOGND 1 T OAC DCCONVERT ER OLOGND 2 2 FORHIG H PO WERUNIT S 1 ALWAYSUSED POSOLO2 2 FORHIG H PO WERUNIT S 1 ALWAYSUSED ALLUNIT...

Page 38: ...PCB 158R5 LOW VOLTAGE POWER SUPPLY ...

Page 39: ...PCB 197J HIGH VOLTAGE DISCHARGE BOARD ...

Page 40: ...ND Mfg 7200 4 40 thread standoff 3 8 X8 HV WARNING X9 HV WARNING X11 HV WARNING R1 R2 R3 R4 R5 R6 1 2 J1 HV 1 2 J2 HV 1 2 J3 GND 1 2 J4 GND P1 P2 P3 N1 N2 N3 R7 R8 R9 R10 1 2 J5 HV 1 2 J6 HV 1 2 J7 GND 1 2 J8 GND P4 P5 P6 N4 N5 N6 X10 7200K ND Mfg 7200 4 40 thread standoff 3 8 X12 7200K ND Mfg 7200 4 40 thread standoff 3 8 X13 7200K ND Mfg 7200 4 40 thread standoff 3 8 X14 7200K ND Mfg 7200 4 40 t...

Page 41: ...K R2 0 10K R1 7 1K R1 1 1K SMA1 NTRIG SMA2 PTR IG 1 2 3 4 5 6 K1 AQV2 21 R3 1 300 3 2 1 8 4 U1 A LM358 C1 0 1uF 15 V 5 6 7 U1 B LM358 CC W W CW R4 5K PMAX R3 4 7K CC W W CW R6 5K NMAX R5 4 7K C2 0 1uF 15V R9 10K R2 10K R7 27K CC W W CW R8 5K NMIN 15V UV ON IS HIGH IF 1 UV HIGH IS LOW AND 2 POL IS LOW UV ON IS HIGH IF 1 UV HIGH IS LOW AND 2 POL IS HIGH IFTHE POLARITY IS SWITCHED AND THE OPPOSITE UL...

Page 42: ...PCB 94H ALARM BOARD ...

Page 43: ... p c b 2 1 7 d d b D o c u m e n ts p c b 2 1 7 a s c h S S R R E L A Y D R IV E R 1 A 1 2 3 4 5 6 K 1 P S 7 1 0 A 1 A 1 2 3 4 5 6 K 2 P S 7 1 0 A 1 A R 2 1 5 K R 1 1 5 K 1 5 V I N 1 2 4 V O U T 2 1 5 V I N 3 2 4 V O U T 4 2 4 V N O O L O 5 G N D 6 S E E M L J 1 6 4 0 4 5 6 6 X 1 K E Y S T O N E 6 2 1 B R A C K E T X 2 K E Y S T O N E 6 2 1 B R A C K E T ...

Page 44: ...PCB 104G KEYPAD DISPLAY BOARD ...

Page 45: ... TRI 9 O SINE 10 O EA 11 O ALIVE 12 AMPLRNG4 13 AMPLRNG3 14 AMPLRNG2 15 AMPLRNG1 16 AMPLRNG0 17 XRLY 5 18 XRLY 4 EO 19 XRLY 3 V I 20 XRLY 2 DUALPW 21 XRLY 1 22 GATE 23 EXTTRIG 24 SYNC OUT 25 M AIN OUT 26 5VON OFF 27 15VON OFF 28 OUT SYNC VSPARE VPRF GATE 24 V GND TR IG AUX GND VF NO C NC SW NO C NC AMP LAN O LIM EX 295 F BD2 OP1B M AINBOARD PCB 295F CONN3 GATE CONN4 EXTTRIG CHANG ES REQ UIREDO N P...

Page 46: ...EO 19 XR LY 3 V I 20 XR LY 2 DU AL PW 21 XR LY 1 22 GATE 23 EXT TRIG 24 SYNC O UT 25 MAIN OUT 26 5V ON OF F 27 15 V ON OFF 28 TR IG O UT SYNC LNK RED GND BLK NO C NC EA IN INT RN G EX T AC T W HT VS PAR E VP RF GA TE TR IG EA LIM G SW BD3 PC B 108U CONN 6 AMP EA U NITS ONLY GR N AMB D1 P39 5 N D LED X1 VC C LED MOUNT CO NN 1 L COM EC F504 SC 5 T NT OPTION ONLY L COM TRD855S IG 1 CABLE OV TEM P AU ...

Page 47: ... R35 47KO Y USE 1 2 ST ANDOFFS P1 P3 N1 N3 1800uF 160V R7 R10 100K CONN1 SYNC OV TEM P AU X A K BD1 PCB104E KEYPAD CHANGES REQUIREDON PCB295B 100 kHz PRF LIM 1 INST ALL C9 680pF 100 kHz HV HV GND GND 197G R1 R2 R3 R4 R5 R6 R7 POS VERSION HAS D2 4 5 7 NORMORIENT R26 R27 UNUSED R24 R25 R8 R14 18 21 22 ZERO R13 17 19 20 UNUSED GN D OL O SSR EN VC 5 V 1 5 V 1 5 V GN D 2 4 V UV1 1 8 C24 P125 WITH PCB 1...

Page 48: ...PERFORMANCE CHECK SHEET 48 ...

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