Avtech AVRF-4A-B Page 35 Instructions Manual Download | Manualshive

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PCB 284B - HIGH VOLTAGE DISCHARGE BOARD

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Summary of Contents for AVRF-4A-B

Page 1: ...13960 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 Cana...

Page 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...

Page 3: ...CK 10 POWER RATINGS 10 CONNECTION TO THE POWER SUPPLY 10 PROTECTION FROM ELECTRIC SHOCK 11 ENVIRONMENTAL CONDITIONS 12 LABVIEW DRIVERS 12 FUSES 13 AC FUSE REPLACEMENT 13 DC FUSE REPLACEMENT 14 FUSE RA...

Page 4: ...TAGE POWER SUPPLY 34 PCB 284B HIGH VOLTAGE DISCHARGE BOARD 35 PCB 183A S AND 183A P CAPACITOR BANKS 36 PCB 216E PRF PW TR ADJUST 37 PCB 231A DC BIAS SOURCE 38 PCB 156D POLARITY CONTROL BOARD PN UNITS...

Page 5: ...B is a highly flexible instrument Aside from the internal trigger source it can also be triggered or gated by external TTL level signals A front panel pushbutton or a computer command can also be use...

Page 6: ...0 1 of the maximum amplitude Settings accuracy after 10 minute warm up Amplitude Typically 3 of setting 2 of maximum Delay Period Typically 3 of setting 5 ns Pulse width Typically 3 of setting 2 ns a...

Page 7: ...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...

Page 8: ...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...

Page 9: ...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 governm...

Page 10: ...mal 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 p...

Page 11: ...erators 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...

Page 12: ...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...

Page 13: ...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...

Page 14: ...g Case Size Recommended Replacement Part Littelfuse Part Number Digi Key Stock Number 1 2 AC 115 V 0 8A 250V Time Delay 5 20 mm 0218 800HXP F2418 ND 230 V 0 5A 250V Time Delay 5 20 mm 0218 500HXP F241...

Page 15: ...conds 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 anoth...

Page 16: ...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 ad...

Page 17: ...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...

Page 18: ...ing It may be necessary to send a few return characters before attempting a login in order to provide enough data to allow this auto sensing to work A standard Linux agetty process is used to implemen...

Page 19: ...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 assuming internal trigg...

Page 20: ...ment controls the trigger frequency and generates the clock internally External Trigger the instrument is triggered by an external TTL level clock on the back panel TRIG connector Manual Trigger the i...

Page 21: ...sed 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 comma...

Page 22: ...he instrument is not in use In the case of failure the switching elements are easily replaced following the procedure described in a following section DO NOT EXCEED 10 kHz The output stage may be dama...

Page 23: ...roper operation The output stage may be damaged if the output is not terminated into a 50 load The AVRF 4A B output may be observed using either a high speed sampling oscilloscope or a slower real tim...

Page 24: ...output channel provides TTL level signals approximately 0 and 3V To avoid overdriving the TRIG input channel of some sampling oscilloscopes a 20 dB attenuator should be placed at the input to the sco...

Page 25: ...ow pointer should be pointing at the Normal choice If it is not press MOVE until it is d Press CHANGE to return to the main menu 5 To set the pulse width to 200 ns a Press the MOVE button until the ar...

Page 26: ...ting to a value more compatible with your sampling oscilloscope Repeat step 4 if required You may also need to adjust the sampling scope controls d Rotate the ADJUST knob The amplitude as seen on the...

Page 27: ...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 250 ns sets the pulse width...

Page 28: ...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 STAT...

Page 29: ...Nual 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 que...

Page 30: ...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...

Page 31: ...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...

Page 32: ...ADBOARD B UNITS ONLY Chassisgroundpost G1 G2 B1 G4 G3 L N G X2 CORCOM6EGG1 2 POWERENTRY M ODULE 1 1b 1a 2 2b 2a X1 POWERSWITCH SW325 ND CW INDUSTRIES GRS 4022 0013 A1 BROWN A2 BLUE A3 BLACK A4 WHITE G...

Page 33: ...20 AWG 24 AWG NEGOLO GND OLOGND 20 O R 24 AWG CAP BANK GND HI EXTPS NEGIN GND GND GREEN GND AMBER DC IN DC IN DC IN GND GND GND 20 AWG PCB158R4 HI EXTPS GND K A J1 J2 J3 J4 J5 J6 J7 J8 J9 FAN J10 GND...

Page 34: ...PCB 158R4 LOW VOLTAGE POWER SUPPLY...

Page 35: ...PCB 284B HIGH VOLTAGE DISCHARGE BOARD...

Page 36: ...D 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...

Page 37: ...PCB 216E PRF PW TR ADJUST...

Page 38: ...PCB 231A DC BIAS SOURCE...

Page 39: ...1 2 3K 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...

Page 40: ...2015 ddb Documents Panelbrd prj PANELTOP LEVELSCHEMATIC 1 2 3 4 5 6 7 8 9 10 J5 Amp 54999 10 1 10 pin straight head er I2C_INT SC L SDA GND VC C SINGLE PULSE BACKLIGHT ENCODER ENCODER S CH I2C_INT SC...

Page 41: ...UST HAVE A IN P N VC C 1A 1B X2 82 101 71 1 b utton keypad 1 2 U4 A MM74HC 14N 11 10 U1 E MM74HC 14N SINGLE PULSE VC C VC C C1 0 2 2uF C1 1 2 2uF C1 2 2 2uF C9 2 2uF C7 2 2uF C6 2 2uF C1 2 2uF 3 4 U4...

Page 42: ...DA SC L VC C VC C GND VC C VC C C5 0 1uF 1 2 U1 A MM74HC 14N 13 12 U1 F MM74HC 14N 5 6 U1 C MM74HC 14N PAD3 LED PAD4 LED X3 4 40 MOUNT X1 4 40 MOUNT X9 4 40 MOUNT X8 4 40 MOUNT 3 4 U1 B MM74HC 14N LC...

Page 43: ...U SE8414K ND6 321 2INCH STANDO FFS T OPH H ARNESS X1 POLR PCB156D 24V NOOLO C HA NG ESN EEDO NPC B156D 1 R 32 R35 150KOY CONN1 SYNC CONN3 G ATE CONN2 TRIG C HSGND OLOGN D POSOLO 5V CONN4 OUT 240A GND...

Page 44: ...PERFORMANCE CHECKSHEET 44...

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