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INTRODUCTION

 

 

The AVOZ-E3-B is a high performance, GPIB and RS232-equipped instrument capable

of generating up to 250V at repetition rates up to 1 kHz into loads of 1Ω or higher (i.e., 

up to 250 Amps). The pulse width is variable from 200 ns to 10 us. The maximum peak 

output power is 62500 Watts, and the maximum average output power is 100 Watts. 

Rise and fall times are fixed at less than 200 ns.

The AVOZ-E3-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 output voltage polarity depends on the model number:

"-P" units: up to +250 Volts

"-N" units: up to -250 Volts

The output is provided on a high-voltage, high-current Positronic connector on the rear 

panel. A 1-meter / 3-foot mating cable is provided, along with a sample test load 

adapter. The resistors on the test load may be removed, allowing the adapter to be 

used with the user's load or DUT.

The AVOZ-E3-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 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 

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.

This instrument is intended for use in research, development, test and calibration 

laboratories by qualified personnel.

5

Содержание AVOZ-E3-B

Страница 1: ...CONTROL SERIAL NUMBER 14223 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...

Страница 2: ...all at its option repair or replace said defective item This warranty does not apply to units which have been dissembled modified or subjected to conditions exceeding the applicable specifications or...

Страница 3: ...11 INSTALLATION 12 VISUAL 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 D...

Страница 4: ...7 CLEANING 37 WIRING DIAGRAMS 38 WIRING OF AC POWER 38 PCB 158R6 LOW VOLTAGE POWER SUPPLY 39 PCB 183A S AND 183A P CAPACITOR BANKS 40 PCB 235D HIGH VOLTAGE DC POWER SUPPLY 41 PCB 197K HIGH VOLTAGE DIS...

Страница 5: ...ad may be removed allowing the adapter to be used with the user s load or DUT The AVOZ E3 B features front panel keyboard and adjust knob control of the output pulse parameters along with a four line...

Страница 6: ...ecautions 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 whe...

Страница 7: ...pushbutton or single pulse trigger via computer command Variable delay Sync to main out 0 to 1 0 seconds for all trigger modes including external trigger Sync output 3 Volts 50 ns will drive 50 Ohm l...

Страница 8: ...outer two carry the ground lines 7 Positronic part number GG8888M1 with four GGMIT00MS AA high current contacts The inner two contacts carry the signal and the outer two carry the ground lines 8 The...

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: ...ation 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 THE POWER SUPPLY An IEC 320...

Страница 13: ...ROM ELECTRIC SHOCK Operators of this instrument must be protected from electric shock at all times The owner must ensure that operators are prevented access and or are insulated from every connection...

Страница 14: ...to 40 C 4 maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to 50 relative humidity at 40 C 5 Mains supply voltage fluctuations up to 10 of the nominal voltage 6 no polluti...

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: ...g Case Size Recommended Replacement Part Littelfuse Part Number Digi Key Stock Number 1 2 AC 115 V 2 0A 250V Time Delay 5 20 mm 0218002 HXP F2420 ND 230 V 1 0A 250V Time Delay 5 20 mm 0218001 HXP F241...

Страница 17: ...he light will stay yellow i e output 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...

Страница 18: ...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...

Страница 19: ...e 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...

Страница 20: ...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 implement serial control internally See the Programm...

Страница 21: ...sitive 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 triggering and a...

Страница 22: ...internally External Trigger the instrument is triggered by an external TTL level clock on the back panel TRIG connector Manual Trigger the instrument is triggered by the front panel SINGLE PULSE push...

Страница 23: ...d is connected the output amplitude may be somewhat higher 3 The amplitude may vary by a few percent depending on the duty cycle 4 The maximum voltage current amplitudes will be reduced by 10 approxim...

Страница 24: ...ure of the output stage is reduced if the following action is taken where possible PRF is kept to a minimum i e operate in a low PRF range when possible rather than in a high PRF range Keep the output...

Страница 25: ...contacts Note the alignment grooves Mating connectors must be positioned appropriately AV HLZ1 100 CABLE One AV HLZ1 100 cable is provided with the AVOZ E3 B One end of the cable mates to the rear pan...

Страница 26: ...e note that it is not capable of dissipating the maximum average power that the AVOZ E3 B can deliver 100 W The user may use the provided resistance as is or disconnect one end to allow a diode load t...

Страница 27: ...w disregard the non standard resistor arrangement shown in the photos In both cases the OUTPUT signal is provided on the NARROW copper strip and the GROUND is provided on the WIDE copper strip This is...

Страница 28: ...UND signals may be accessed using the four high current posts which are terminated with M6 1 0 internal threads An M6 1 0x12 screw should be used to attach cabling to each of the four posts The inner...

Страница 29: ...For maximum current carrying capability i e least resistance all four posts should be used 29 Inner Posts OUT Outer posts GROUND End View of AV HLZA With Copper Strips Removed...

Страница 30: ...ck in particular the MOVE CHANGE and ADJUST controls 1 Connect a cable from the SYNC OUT connector to the TRIG input of an oscilloscope Connect the AV HLZA1 test load directly to the rear panel OUT co...

Страница 31: ...rnal choice If it is not 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...

Страница 32: ...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 u...

Страница 33: ...rns 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...

Страница 34: ...h numeric value DCYCle numeric value HOLD WIDTh DCYCle DELay numeric value GATE TYPE ASYNC SYNC LEVel HIgh LOw SOURce VOLTage LEVel IMMediate AMPLitude numeric value PROTection TRIPped query only STAT...

Страница 35: ...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...

Страница 36: ...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 37: ...es 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 dis...

Страница 38: ...WIRING DIAGRAMS WIRING OF AC POWER...

Страница 39: ...PCB 158R6 LOW VOLTAGE POWER SUPPLY...

Страница 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 GN...

Страница 41: ...PCB 235D HIGH VOLTAGE DC POWER SUPPLY...

Страница 42: ...PCB 197K HIGH VOLTAGE DISCHARGE CIRCUIT...

Страница 43: ...PCB 104G KEYPAD DISPLAY BOARD...

Страница 44: ...MAIN WIRING POSITIVE UNITS...

Страница 45: ...PERFORMANCE CHECK SHEET 45...

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