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Avtech AVRF-7B-B, Instructions Manual

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Avtech AVRF-7B-B Instructions Manual Download Page 21

WARNING: The output stage may be damaged if triggered by an external signal at a 
pulse repetition frequency greater than 10 kHz.

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. This input acts 
synchronously. When gated, the output will complete the full pulse width if the output is 
high, and then stop triggering. No pulses are truncated.

21

Summary of Contents for AVRF-7B-B

Page 1: ...14085 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: ...VISUAL CHECK 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...

Page 4: ...DAMAGE 30 WIRING DIAGRAMS 31 WIRING OF AC POWER 31 WIRING OF DC POWER 32 PCB 158R5 LOW VOLTAGE POWER SUPPLY 33 PCB 284C HIGH VOLTAGE DISCHARGE BOARD 34 PCB 183A S AND 183A P CAPACITOR BANKS 35 PCB 21...

Page 5: ...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 used to trigger t...

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: ...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...

Page 9: ...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...

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: ...the 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 5 kHz The output stage may be dama...

Page 23: ...2 R PW f where V is the output voltage R is the load resistance PW is the pulse width and T is the pulse period 1 frequency and f is the frequency If a 50 resistor is used the worst case average power...

Page 24: ...t press MOVE until it is d Press CHANGE to return to the main menu 5 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 butt...

Page 25: ...r 500V for N instruments c Observe the oscilloscope You should see 1 us wide 500V pulses d Rotate the ADJUST knob The amplitude as seen on the oscilloscope should vary e Reduce the amplitude to 50V or...

Page 26: ...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 27: ...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 28: ...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 29: ...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 30: ...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 31: ...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...

Page 32: ...D GND 5V 5V 24 NOOLO POSOLO POSOLO 20 AWG 24 AWG NEGOLO GND OLOGND 20 O R24 AWG CAP BANK GND HI EXTPS NEGIN GND GND GREEN GND AMBER DC IN DC IN DC IN GND GND GND 20 AWG PCB158R5 HI EXTPS GND K A J1 J2...

Page 33: ...PCB 158R5 LOW VOLTAGE POWER SUPPLY...

Page 34: ...PCB 284C HIGH VOLTAGE DISCHARGE BOARD...

Page 35: ...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 36: ...PCB 216E PRF PW TR ADJUST...

Page 37: ...PCB 104G KEYPAD DISPLAY BOARD...

Page 38: ...TE 24V GND TRIG AUX GND VF NO C NC SW NO C NC AMP LAN OLIME X 295F BD3 PCB295F CONN1 SYNC CONN4 G ATE CONN3 TRIG CHSGND OLOGND POSOLO 5V CONN2 OUT 15V NSY 24V NO OLO C HSGND 5V 15VNSY 15V 1 5KOY 1N536...

Page 39: ...PERFORMANCE CHECKSHEET 39...

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