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 Tel: 888-670-8729 (USA & Canada) BOX 5120, LCD MERIVALE http://www.avtechpulse.com/ or +1-613-686-6675 (Worldwide) OTTAWA, CANADA K2C3H5 INSTRUCTIONS MODEL AVOZ-A3-B 100 VOLT / 100 AMP, PULSED VOLTAGE LASER DIODE DRIVER WITH IEEE 488.2 AND RS-232 CONTROL SERIAL NUMBER: 14275 __________________________________________________________________ 2 WARRANTY Avtech Electrosystems Ltd. warrants products of its manuf acture to be free from defects in material and workmanship under conditions of normal use . If, within one year after delivery to the original owner, and after prepaid return by the original owner, this Avtech product is found to be defective, Avtec h shall at its option repair or replace said defective item. This warranty does no t apply to units which have been dissembled, modified or subjected to conditions exceeding the applicable specifications or ratings. This warranty is th e extent of the obligation assumed by Avtech with respect to this product and n o other warranty or guarantee is either expressed or implied. TECHNICAL SUPPORT Phone: 888-670-8729 (USA & Canada) or +1-613-686-6675 (Worldwide) E-mail: info@avtechpulse.com World Wide Web: http://www.avtechpulse.com __________________________________________________________________ 3 TABLE OF CONTENTS WARRANTY............................................................... ..................................................... 2 TECHNICAL SUPPORT...................................................... ............................................ 2 TABLE OF CONTENTS...................................................... ............................................ 3 INTRODUCTION........................................................... .................................................. 5 SPECIFICATIONS......................................................... .................................................. 6 REGULATORY NOTES....................................................... ........................................... 8 FCC PART 18............................................................ .............................................................. 8 EC DECLARATION OF CONFORMITY........................................... .......................................8 DIRECTIVE 2011/65/EU (RoHS)............................................ .................................................9 DIRECTIVE 2002/96/EC (WEEE)............................................ ................................................9 FIRMWARE LICENSING..................................................... .................................................. 10 INSTALLATION........................................................... .................................................. 11 VISUAL 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 - PULSE GENERATOR TIMING........................... ............20 BASIC PULSE CONTROL.................................................... ................................................ 20 TRIGGER MODES.......................................................... ...................................................... 21 GATING MODES........................................................... ........................................................ 21 GENERAL INFORMATION - OPERATING INTO A LOAD............................ ..............23 AMPLITUDE CONTROL...................................................... ................................................. 23 SELECTING THE SERIES RESISTANCE........................................ ....................................23 OUTPUT CONNECTIONS..................................................... ................................................ 23 USING THE SUPPLIED TEST LOAD (AV-CTL1-ENC)............................. ...........................24 __________________________________________________________________ 4 TEST ARRANGEMENT....................................................... .................................................. 25 LENZ’S LAW AND INDUCTIVE VOLTAGE SPIKES................................ ............................27 ATTACHING AND DETACHING LOADS.......................................... ....................................27 MEASURING OUTPUT CURRENT............................................... ........................................27 START-UP CHECK-LIST FOR LOCAL CONTROL.................................. ....................29 CALIBRATION ADJUSTMENTS - SOFTWARE PROCEDURES.......................... ......31 ADJUSTING AMPLITUDE ACCURACY........................................... ....................................31 PROGRAMMING YOUR PULSE GENERATOR....................................... ....................32 KEY PROGRAMMING COMMANDS............................................... .....................................32 ALL PROGRAMMING COMMANDS............................................... ......................................33 MECHANICAL INFORMATION................................................. ....................................35 TOP COVER REMOVAL...................................................... ................................................. 35 RACK MOUNTING.......................................................... ...................................................... 35 ELECTROMAGNETIC INTERFERENCE........................................... ...................................35 MAINTENANCE............................................................ ................................................ 36 REGULAR MAINTENANCE.................................................... .............................................. 36 CLEANING............................................................... ............................................................. 36 TRIGGER DAMAGE......................................................... ..................................................... 36 WIRING DIAGRAMS........................................................ ............................................. 37 WIRING OF AC POWER..................................................... .................................................. 37 PCB 158R7 - LOW VOLTAGE POWER SUPPLY................................... .............................38 PCB 284C - HIGH VOLTAGE DC POWER SUPPLY................................ ............................39 PCB 156D - POLARITY CONTROL PCB (-PN UNITS)............................ ............................40 PCB 104H - KEYPAD / DISPLAY BOARD...................................... .....................................41 MAIN WIRING............................................................ ........................................................... 42 MAIN WIRING - DUAL-POLARITY UNITS (-PN)................................ ..................................43 PERFORMANCE CHECK SHEET................................................ ................................ 44 Manual Reference: /fileserver1/officefiles/instructword/avoz/AVOZ-A3-B, ed20.odt. Last modified February 29, 2024. Copyright © 2024 Avtech Electrosystems Ltd, All Rights Reserved. __________________________________________________________________ 5 INTRODUCTION The Model AVOZ-A3-B pulse generator is designed for pulsing laser diode and other low impedance loads with rectangular pulses as high as 100V into 1Ω (i. e. 100 Amps) with < 35 ns rise times. The current and voltage polarities depend on t he model number: -P units: up to +100 V amplitude (0 to +100 Amps) -N units: up to -100 V amplitude (0 to -100 Amps) -PN units: up to ±100 V amplitude (0 to ±100 Amps) The pulse repetition frequency can vary from 1 Hz to 20 kHz, and pulse widths can vary from 50 ns to 2 us. The maximum duty cycle is 0.1%, and the maximum ave rage output power is 10 Watts. The Model AVOZ-A3-B pulse generator is a voltage pulser. The current am plitude is determined by Ohm’s Law. That is, the current is the output voltage div ided by the load resistance. The load resistance should be approximately 1Ω to attain a peak current of 100 A. The loads can be connected to the pulse generator using the convenient AV-CLZ1-60 transmission line cable assembly, which has a 1Ω characteristic impedan ce (Z0), and is terminated with a DB-37 male connector. A sample connectorized test loa d is provided. The AVOZ-A3-B can be controlled from the front panel, or via a computer connected to the IEEE 488.2-compliant GPIB port, or the RS-232 serial port. This instrument is intended for use in research, development, test and calibration laboratories by qualified personnel. __________________________________________________________________ 6 SPECIFICATIONS Model1: AVOZ-A3-B Amplitude, voltage2,3,11: < 5V to 100V Maximum current: 100A Minimum load impedance4: 1 Ω Pulse width (FWHM): 50 ns – 2 us Rise, fall times (20%-80%)9: ≤ 35 ns Maximum PRF: 20 kHz Duty cycle: (max) 0.1% Output impedance: ≤ 0.05 Ω Average output power: 10 W max. Droop: ≤ 5%, at maximum pulse width and maximum amplitude Polarity5: Positive or negative or dual polarity (specify) GPIB & RS-232 control1: Standard on -B units. LabView drivers: Check http://www.avtechpulse.com/labview for availability and downloads Ethernet port, for remote Included. Recommended as a modern alternative to GPIB / RS-232. control using VXI-11.3, ssh, See http://www.avtechpulse.com/options/vxi for details. telnet, & web: Settings resolution: The resolution of the timing parameters (pulse width, delay, period) va ries, but is always better than 0.15% of (|set value| + 20 ns). The amplitude resolution is < 0.1% of the maximum amplitude. Settings accuracy: Typically ± 3% (plus ±1V or ± 2 ns) after 10 minute warmup, at low duty cycles12. For high-accuracy applications requiring traceable calibration, verify the output paramet ers with a calibrated oscilloscope13. Propagation delay: ≤ 100 ns (Ext trig in to pulse out) Jitter: ≤ ± 35ps ± 0.015% RMS (sync out to pulse out) Trigger modes: Internal trigger, external trigger (TTL-level pulse, > 10 ns, 1 kΩ inpu t impedance), front-panel “Single Pulse” pushbutton, or single pulse trigger via comp uter command. Variable delay: Sync to main out: 0 to 1.0 seconds, for all trigger modes (including ex ternal trigger). Sync output: > +3 Volts, > 50 ns, will drive 50 Ohm loads Gate input: Synchronous or asynchronous, active high or low, switchable. Suppresses triggering when active. Included output cable: Detachable high-current transmission line cable assembly. Part number: AV-CLZ1-60 (see http://www.avtechpulse.com/transmission/av-clz1) length, Z0: 1 Ω, 60 cm Output connection: End of cable: DB-37 male. Pins 1-19 = signal, pins 20-37 = ground. Supplied test load6: AV-CTL1-ENC Other signal connectors: Trig, Gate, Sync: BNC Power required: 100 - 240 Volts, 50 - 60 Hz Dimensions (H x W x D): 100 x 430 x 375 mm (3.9” x 17” x 14.8”) Chassis material: Anodized aluminum, with blue plastic trim Optional rack-mount kit: Add -R5 suffix. Temperature range: +5°C to +40°C 1) -B suffix indicates IEEE-488.2 GPIB and RS-232 control of pulse ampl itude, pulse width, delay and PRF. (See http://www.avtechpulse.com/gpib ). 2) For remote analog electronic control (0 to + 10V) of the amplitude, suffix model number with -EA. Electronic control units also include sta ndard front-panel controls. Not available for the AVOZ-B4-B. 3) For operation at voltage amplitudes of less than 10% of the full-sca le voltage, better results may be obtained by setting the amplitude nea r full-scale and increasing the load impedance accordingly. 4) Required to limit output current. For applications where additional resistance must be added in series with the device under test, Avtech r ecommends connecting multiple Ohmite OY-series (http://www.ohmite.com) ceramic composition resistors in parallel to create a high-power, low-inductance effective resistance . 5) Indicate desired polarity by suffixing model number with -P or -N (i .e. positive or negative) or -PN for dual polarity option. 6) The supplied test load is for low-duty-cycle basic operational tests only. The power rating of the load is 5 Watts. it is not capable of su pporting the instrument's full maximum average output power. See http://www.avtechpulse.com/accessorie s/ for details about the AV-CTL series of test loads. 7) The AVOZ-B4-B requires a user-supplied 0 to 110V DC power supply tha t is capable of supplying the maximum average power output of the instr ument (i.e., 400 Watts worst-case). The polarity of the power supply must be the same as that of the AVOZ-B4-B. The Xantrex ( http://www.xantrex.com/) XHR 150-7 is o ne example of a suitable power supply. 8) Multi-Contact (http://www.multi-contact.com or http://www.multi-cont act-usa.com) ID/S6AR-N-B4S series, or similar. For mating cables, speci fy the -AK3 option, which includes two 1m cables (1 red, 1 black) with 6mm safety sockets, and tw o 6mm safety plug to M6 stud adapters (1 red, 1 black). 9) Measured when the load resistance is equal to the minimum rated load impedance. 10) Typically < 10 ns measured at rear-panel output connector. The supp lied AV-CLZ11-60 cable, if used, will degrade the rise and fall times t o < 15 ns, approximately. 11) The maximum and actual amplitudes will fall by up to 25% for pulse widths less than 3 times the specified rise/fall time, due to the “roun ding” of the pulse. __________________________________________________________________ 7 12) The amplitude may decrease ~10% relative to the programmed setting if the instrument is operating at or near the maximum specified duty cy cle. 13) These instruments are provided with a basic calibration checksheet, showing a selection of measured output parameters. These measurements are performed with equipment that is calibrated on a regular basis by a third-party ISO/IEC 17025:2005 accredited calibration labor atory. However, Avtech itself does not claim any accreditation. For applications requiring traceable performance, use a calibrated measurement system rather than relying on the accuracy of th e pulse generator settings. __________________________________________________________________ 8 REGULATORY NOTES FCC PART 18 This device complies with part 18 of the FCC rules for non-consumer ind ustrial, scientific and medical (ISM) equipment. This instrument is enclosed in a rugged metal chassis and uses a filter ed power entry module (where applicable). The main output signal is provided on a shie lded connector that is intended to be used with shielded coaxial cabling and a shielde d load. Under these conditions, the interference potential of this instrument is low. If interference is observed, check that appropriate well-shielded cabli ng is used on the output connectors. Contact Avtech (info@avtechpulse.com) for advice if you are unsure of the most appropriate cabling. Also, check that your load is adequate ly 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 c overed with shielded metal “dust caps” to reduce the interference potential. This instrument does not normally require regular maintenance to minimi ze interference potential. However, if loose hardware or connectors are noted, they sho uld be tightened. Contact Avtech (info@avtechpulse.com) if you require assista nce. EC DECLARATION OF CONFORMITY We Avtech Electrosystems Ltd. P.O. Box 5120, LCD Merivale Ottawa, Ontario Canada K2C 3H5 declare that this pulse generator meets the intent of Directive 2004/10 8/EG for Electromagnetic Compatibility. Compliance pertains to the following spe cifications as listed in the official Journal of the European Communities: EN 50081-1 Emission EN 50082-1 Immunity __________________________________________________________________ 9 and that this pulse generator meets the intent of the Low Voltage Direc tive 2006/95/EC. Compliance pertains to the following specifications as listed in the of ficial Journal of the European Communities: EN 61010-1:2001 Safety requirements for electrical equipment for measurement, control, and laboratory use DIRECTIVE 2011/65/EU (RoHS) We Avtech Electrosystems Ltd. P.O. Box 5120, LCD Merivale Ottawa, Ontario Canada K2C 3H5 declare that, to the best of our knowledge, all electrical and electron ic equipment (EEE) sold by the company are in compliance with Directive 2011/65/EU of the European Parliament and of the Council of 8 June 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (also known as “RoHS Recast”). In addition, this declaration of conformity is issued under t he sole responsibility of Avtech Electrosystems Ltd. Specifically, products man ufactured do not contain the substances listed in the table below in concentrations grea ter 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 Biphenyls (PBB) < 1000 ppm (0.1% by mass) Polybrominated Diphenyl ethers (PBDE) < 1000 ppm (0.1% by mass) Cadmium (Cd) < 100 ppm (0.01% by mass) Bis(2-ethylhexyl) phthalate (DEHP) < 1000 ppm (0.1% by mass) Butyl benzyl phthalate (BBP) < 1000 ppm (0.1% by mass) Dibutyl phthalate (DBP) < 1000 ppm (0.1% by mass) Diisobutyl phthalate (DIBP) < 1000 ppm (0.1% by mass) DIRECTIVE 2002/96/EC (WEEE) European customers who have purchased this equipment directly from Avte ch will have completed a “WEEE Responsibility Agreement” form, accepting responsibil ity for WEEE compliance (as mandated in Directive 2002/96/EC of the European Union a nd local __________________________________________________________________ 10 laws) on behalf of the customer, as provided for under Article 9 of Dir ective 2002/96/EC. Customers who have purchased Avtech equipment through local representat ives should consult with the representative to determine who has responsibil ity for WEEE compliance. Normally, such responsibilities with lie with the represent ative, unless other arrangements (under Article 9) have been made. Requirements for WEEE compliance may include registration of products w ith local governments, reporting of recycling activities to local governments, an d financing of recycling activities. FIRMWARE LICENSING Instruments with firmware versions 5.00 or higher use open-source softw are internally. Some of this software requires that the source code be made available t o the user as a condition of its licensing. This source code is available upon request (contact info@avtechpulse.com). Earlier firmware versions do not contain any open source software. __________________________________________________________________ 11 INSTALLATION VISUAL CHECK After unpacking the instrument, examine to ensure that it has not been damaged in shipment. Visually inspect all connectors, knobs, liquid crystal displa ys (LCDs), and the handles. If the instrument has been damaged, file a c laim immediately with the company that transported the instrument. Confirm that the following items are present: • The mainframe (i.e., the main instrument chassis) • A power cord • A GPIB cable • An AV-CTL1-ENC test load • An AV-CLZ1-60 transmission line cable assembly • Two instrumentation manuals (this manual and the “Program ming Manual for -B Instruments”) are with the instrument. POWER RATINGS This instrument is intended to operate from 100 - 240 V, 50 - 60 Hz. The maximum power consumption is 74 Watts. Please see the “FUSES” secti on for information about the appropriate AC and DC fuses. This instrument is an “Installation Category II” instrument, intended f or 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 p anel for AC power connection to the instrument. One end of the de tachable power cord that is supplied with the instrument plugs into this socket. The other end of t he detachable power cord plugs into the local mains supply. Use only the cable supplied with the instrument. The mains supply must be earthed, and the cord used to connect the instrument to the mains supply must provide an earth connection. (The s upplied cord does this.) Warning: Failure to use a grounded outlet may result in injury or deat h due to electric shock. This product uses a power cord with a ground connection . It must be connected to a properly grounded outlet. The instrument chassis is conn ected to the ground wire in the power cord. __________________________________________________________________ 12 The table below describes the power cord that is normally supplied with this instrument, depending on the destination region: Destination Region Description Option Manufacturer Part Number United Kingdom, Hong Kong, BS 1363, -AC00 Qualtek 370001-E01 Singapore, Malaysia 230V, 50 Hz AS 3112:2000, Australia, New Zealand -AC01 Qualtek 374003-A01 230-240V, 50 Hz Continental Europe, Korea, European CEE 7/7 -AC02 Qualtek 364002-D01 Indonesia, Russia “Schuko” 230V, 50 Hz NEMA 5-15, North America, Taiwan -AC03 Qualtek 312007-01 120V, 60 Hz SEV 1011, Switzerland -AC06 Qualtek 378001-E01 230V, 50 Hz SABS 164-1, South Africa, India -AC17 Volex 2131H 10 C3 220-250V, 50 Hz JIS 8303, Japan -AC18 Qualtek 397002-01 100V, 50-60 Hz SI 32, Israel -AC19 Qualtek 398001-01 220V, 50 Hz GB 1002-1 / 2099-1, China -AC22 Qualtek 399012-01 220V, 50 Hz PROTECTION FROM 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 insula ted from every connection point. In some cases, connections must be exposed to p otential 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 r ecognize shock hazards and are familiar with safety precautions required to avoid poss ibly injury. In particular, operators should: 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 tur ned off. 4. Keep in mind that all cables, connectors, oscilloscope probes, and load s must have an appropriate voltage rating. __________________________________________________________________ 13 5. Do not attempt any repairs on the instrument, beyond the fuse replaceme nt procedures described in this manual. Contact Avtech technical support ( see page 2 for contact information) if the instrument requires servicing. S ervice is to be performed solely by qualified service personnel. ENVIRONMENTAL CONDITIONS This instrument is intended for use under the following conditions: 1. indoor use; 2. altitude up to 2 000 m; 3. temperature 5 °C to 40 °C; 4. maximum relative humidity 80 % for temperatures up to 31 °C decreasi ng 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 A vtech web site, at http://www.avtechpulse.com/labview. A copy is also available in Nati onal Instruments' Instrument Driver Library at http://www.natinst.com/. __________________________________________________________________ 14 FUSES This instrument contains four fuses. All are accessible from the rear-p anel. Two protect the AC prime power input, and two protect the interna l DC power supplies. The locations of the fuses on the rear panel are shown in the figure below: Fuses #1 and #2 Fuse #4 Fuse #3 (AC fuses) (DC fuse) (DC fuse) 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: Pry out the fuse drawer using a screwdriver. Fuse Drawer __________________________________________________________________ 15 DC FUSE REPLACEMENT The DC fuses may be replaced by inserting the tip of a flat-head screwd river into the fuse holder slot, and rotating the slot counter-clockwise. The fuse and its carrier will then pop out. FUSE RATINGS The following table lists the required fuses: Nominal Recommended Replacement Part Fuses Mains Rating Case Size Littelfuse Part Digi-Key Stock Voltage Number Number 0.5A, 250V, #1, #2 (AC) 100-240V 5×20 mm 0218.500HXP F2416-ND Time-Delay 0.8A, 250V, #3 (DC) N/A 5×20 mm 0218.800HXP F2418-ND Time-Delay 1.6A, 250V, #4 (DC) N/A 5×20 mm 021801.6HXP F2424-ND Time-Delay The recommended fuse manufacturer is Littelfuse (http://www.littelfuse. com). Replacement fuses may be easily obtained from Digi-Key (http://www.digi key.com) and other distributors. __________________________________________________________________ 16 FRONT PANEL CONTROLS 1 2 5 4 3 1. P OWER Switch . This is the main power switch. When turning the instrum ent on, there is normally a delay of 10 seconds before anything is shown on the main display, as the internal operating system boots up. 2. O VERLOAD Indicator . When the instrument is powered, this indicator is normally green, indicating normal operation. If this indicator is yellow, an int ernal automatic overload protection circuit has been tripped. If the unit is overloaded (by operating at an exceedingly high duty cycle or by operating into a very low imped ance), the protective circuit will disable the output of the instrument and turn t he indicator light yellow. The light will stay yellow (i.e. output disabled) for about 5 s econds after which the instrument will attempt to re-enable the output (i.e. light g reen) for about 1 second. If the overload condition persists, the output will be disabl ed 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 n ot a cause for concern. Note that the output stage will safely withstand a short-circuited load condition. 3. S YNC OUT . This connector supplies a SYNC output that can be used to t rigger other equipment, particularly oscilloscopes. This signal leads (or lags ) the main output by a duration set by the "DELAY" controls and has an approximate amplitude of +3 Volts to RL > 50Ω with a pulse width of approximately 1 00 ns. 4. L IQUID CRYSTAL DISPLAY (LCD) . This LCD is used in conjunction with th e keypad to change the instrument settings. Normally, the main menu is di splayed, which lists the key adjustable parameters and their current values. The “Programming Manual for -B Instruments” describes the menus and submenu s in detail. __________________________________________________________________ 17 5. K EYPAD . Control Name Function MOVE This moves the arrow pointer on the display. CHANGE This is used to enter the submenu, or to select the operating mode, pointed to by the arrow pointer. ×10 If one of the adjustable 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 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 numeric adjustable values, such as frequency, pulse width, etc. The adjust step size is set by the "EXTRA FINE" button. When the main menu is displayed, this knob can be used to move the arrow pointer. __________________________________________________________________ 18 REAR PANEL CONTROLS 4 11 10 1 3 5 GATE AMP TRIG RS-232 OUT P OUT N GPIB 8 6 7 9 2 1. A C POWER INPUT . An IEC-320 C14 three-pronged recessed male socket is provided on the back panel for AC power connection to the instrument. O ne end of the detachable power cord that is supplied with the instrument plugs in to this socket. 2. A C FUSE DRAWER . The two fuses that protect the AC input are located i n this drawer. Please see the “FUSES” section of this manual for more informat ion. 3. D C FUSES . These two fuses protect the internal DC power supplies. Ple ase see the “FUSES” sections of this manual for more information. 4. G ATE . This TTL-level (0 and +5V) logic input can be used to gate the triggering of the instrument. This input can be either active high or active low, dep ending on the front panel settings or programming commands. (The instrument triggers normally when this input is unconnected). When set to active high mode, this inp ut is pulled- down to ground by a 1 kΩ resistor. When set to active low mode, this in put is pulled- up to +5V by a 1 kΩ resistor. 5. T RIG . This TTL-level (0 and +5V) logic input can be used to trigger t he instrument, if the instrument is set to triggering externally. The instrument triggers on the rising edge of this input. The input impedance of this input is 1 kΩ. (Dependi ng on the length of cable attached to this input, and the source driving it, it m ay be desirable to add a coaxial 50 Ohm terminator to this input to provide a proper trans mission line termination. The Pasternack (www.pasternack.com) PE6008-50 BNC feed-thr u 50 Ohm terminator is suggested for this purpose.) 6. G PIB Connector . A standard GPIB cable can be attached to this connect or to allow the instrument to be computer-controlled. See the “Programming Manual f or -B Instruments” for more details on GPIB control. __________________________________________________________________ 19 7. R S-232 Connector. A standard serial cable with a 25-pin male connecto r can be attached to this connector to allow the instrument to be computer-contr olled. A user name (“admin”) and a password (“default”, as shipped from the factory) are required when logging into a serial terminal session. The internal controller at tempts to auto- sense the parity setting. It may be necessary to send a few return char acters before attempting a login in order to provide enough data to allow this auto-s ensing to work. (A standard Linux “agetty” process is used to implement serial control internally.) See the “Programming Manual for -B Instruments” for more details on RS-232 control. 8. N etwork Connector . This Ethernet connector allows the instrument to b e remotely controlled using the VXI-11.3, ssh (secure shell), telnet, and http (we b) protocols. See the “Programming Manual for -B Instruments” for more details. 9. O UT P . This is the main positive output, present on “-P” and “-PN” un its. It is only active when the amplitude is set to a positive value. The AV-CLZ1-60 tr ansmission line plugs into this DB-37 female connector. Pins 1-19 (the upper row) are connected to the signal out, and pins 20-37 (the lower row) are connect ed to ground. Caution: Voltages as high as 100V may be present on the pins 1-19 of t his output connector. Avoid touching these conductors. Ensure that any cabl e, load, or system connecting to this connector shields the high-voltage areas from the user. 10. O UT N . This is the main negative output, present on “-N” and “-PN” un its. It is only active when the amplitude is set to a negative value. The AV-CLZ1-60 tr ansmission line plugs into this DB-37 female connector. Pins 1-19 (the upper row) are connected to the signal out, and pins 20-37 (the lower row) are connect ed to ground. Caution: Voltages as high as 100V may be present on the pins 1-19 of t his output connector. Avoid touching these conductors. Ensure that any cabl e, load, or system connecting to this connector shields the high-voltage areas from the user. 11. A MP Connector . (Optional feature. Present on -EA units only.) The out put amplitude can be set to track the voltage on this input. Zero Volts in correspond s to zero amplitude output, and +10V in corresponds to maximum amplitude out. Thi s mode is activated by selecting "Ext Control" on the front-panel amplitude menu, or with the "source:voltage external" command. __________________________________________________________________ 20 GENERAL INFORMATION - PULSE GENERATOR TIMING BASIC PULSE CONTROL This instrument can be triggered by its own internal clock or by an ext ernal TTL trigger signal. In either case, two output channels respond to the trigger: OUT and SYNC. The OUT channel is the signal that is applied to the device under test. Its amplitude and pulse width are variable. The SYNC pulse is a fixed-width TTL-level ref erence pulse used to trigger oscilloscopes or other measurement systems. When the de lay is set to a positive value the SYNC pulse precedes the OUT pulse. In the diagrams below, positive amplitude is assumed. (For “-N” units, the output waveforms are inverted in polarity.) These pulses are illustrated below for a positive delay, and internal t riggering: 100 ns, FIXED SYNC OUT (generated by the 3V, FIXED internal oscillator) DELAY > 0 PULSE WIDTH AMPLITUDE, VARIABLE MAIN OUTPUT Basic Output Pulses for Delay > 0 The order of the output pulses is reversed for negative delays: 100 ns, FIXED SYNC OUT (generated by the 3V, FIXED internal oscillator) DELAY < 0 PULSE WIDTH AMPLITUDE, VARIABLE MAIN OUTPUT Basic Output Pulses for Delay < 0 When the triggering is set to external mode, a TTL-level pulse on the T RIG input will trigger the pulse generator, as shown below: __________________________________________________________________ 21 > 50 ns TRIG TTL LEVELS (external input) (0V and 3V-5V) PROPAGATION DELAY (FIXED) 100 ns, FIXED SYNC OUT 3V, FIXED DELAY > 0 PULSE WIDTH AMPLITUDE, VARIABLE MAIN OUTPUT As before, if the delay is negative, the order of the SYNC and OUT puls es is reversed. TRIGGER MODES This instrument has four trigger modes:  Internal Trigger: the instrument controls the trigger frequency, and ge nerates the clock 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” 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 u sing the appropriate programming commands. (See the “Programming Manual for -B Instruments” for more details.) GATING MODES Triggering can be suppressed by a TTL-level signal on the rear-panel GA TE connector. The instrument can be set to stop triggering when this input high or lo w, using the front- panel gate menu or the appropriate programming commands. This input can also be set to act synchronously or asynchronously. When set to asynchronous mo de, the GATE will disable the output immediately. Output pulses may be truncate d. When set to __________________________________________________________________ 22 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. __________________________________________________________________ 23 GENERAL INFORMATION - OPERATING INTO A LOAD AMPLITUDE CONTROL The Model AVOZ-A3-B pulse generator is a voltage pulser. The current am plitude is determined by Ohm’s Law. That is, the current is the output voltage div ided by the load resistance. More specifically: IOUT = (VSETTING – VDIODE) / R, where VSETTING is the set amplitude, VDIODE is the diode voltage, and R is the series resistance (including any series resistance in the diode itself). R is normally 1Ω; it should not be smaller than this. Avtech recommends connecting multiple Ohmite OX or OY-series or RCD RSF2B resistors in parallel to create a high-power, lo w-inductance effective resistance. SELECTING THE SERIES RESISTANCE The best waveforms will be obtained if the amplitude is set between 20% and 100% of the maximum rating (i.e., 20V to 100V), and if the load resistance R is chosen to be between 1.0 and 1.6 Ohms. It should never be less than 1.0 Ω, or the instrument may be damaged. For applications requiring less than the maximum possible current, best results may be obtained if R is approximately 1.6 Ω, because this slight increase in t he load resistance will result in a faster transition times. However, the load resistance should not be increased beyond 1.6 Ω, or the transmission line mismatch between the o utput transmission line (which has a characteristic impedance of Z0 = 1 Ω) an d the load may introduce significant ringing. If the resistance of the device under test (DUT) is significantly highe r than 1.6 Ω, resistance should be added in parallel with the DUT so that the total e quivalent resistance is 1.6 Ω. OUTPUT CONNECTIONS The main output is provided on a rear-panel DB-37 female connector. Pin s 1-19 of this connector (the upper row) are connected to the signal out, and pins 20- 37 (the lower row) are connected to ground. An AV-CLZ1-60 transmission line is supplied with the instrument. One en d plugs into the rear-panel connector. The other end is terminated with a DB-37 male connector. Pins 1-19 of this connector (the upper row) are connected to the signal out, and pins 20-37 (the lower row) are connected to ground. The cable is reversible - either end can be plugged into the rear panel. This cable can be ordered separately, a s model AV- __________________________________________________________________ 24 CLZ1-60. (Lengths longer than 60 cm are also available - see http://www.avtechpulse.com/transmission/av-clz1 for details.) The user may connect a load to the end of the AV-CLZ1-60 transmission l ine using a load that has a DB-37 female connector. To construct your own connector ized load, consider using a Norcomp 172-037-201-001 DB-37 female connector with so lder cup pins. This is readily available from Digi-Key (http://www.digikey.com, stock number 137F-ND). Care must be taken to construct the connectorized test load t o conform to local safety standards. High voltages (up to 100V, approximately) will be present on the load during normal operation. Pins 1-19 short be connected together to provide the signal output, and pins 20-37 should be connected together to provide t he ground. It may be simpler to modify the supplied test load. The supplied test l oad has this connector pre-installed, and a safety enclosure is provided. This test load is described in the next section. Caution: Voltages as high as 100V may be present on the pins 1-19 of t he output connector. Avoid touching these conductors. Ensure that any cable, load , or system connecting to this connector shields the high-voltage areas from the us er. USING THE SUPPLIED TEST LOAD (AV-CTL1-ENC) The supplied test load consists of a DB-37 female connector mounted on the lid of a small aluminum box chassis. Inside the chassis, an 8 mm by 50 mm circui t board is sandwiched between the two rows of solder cups on the rear of the conne ctor. Four Ohmite OY-series 3.9 Ohm resistors are connected in parallel between th e two rows of solder cups. This provides a total resistance of 3.9 Ω / 4 ≈ 1.0 Ω. Two unused SMA connectors are provided for making connections through t he chassis wall, if desired. A 5/16" hole, plugged with a screw is also provided. The screw may be removed to provide an access hole to the interior of the chassis. Due to the presence of high voltages on the output (up to 100V, approxi mately), the lid should be installed on the aluminum chassis so that users can not physi cally touch the load. The test load has a maximum power dissipation rating of 5 Watts. Take c are not exceed this! This test load can be ordered separately, as model AV-CTL1-ENC. It can also be ordered with no resistors installed, as model AV-CTLX-ENC. The basic mechanical connection scheme for the AV-CTL1-ENC is shown bel ow: __________________________________________________________________ 25 AV-CLZ1-60 TRANSMISSION LINE CABLE ASSEMBLY Pins 20-37 (Ground) Pins 1-19 (Signal Out) Plug the AV-CLZ1-60 cable into the lid-mounted DB-37 female connector Aluminum Lid Pins 20-37 (Ground) Measure output here (pins 1-19) Secure the lid to the aluminum enclosure Four 3.9 Ohm resistors using the supplied connected in parallel screws (four places). Aluminum Safety Enclosure Two unused SMA feed-through connectors, for measurement connections. TEST ARRANGEMENT The basic test arrangement is shown below: __________________________________________________________________ 26 Connect pins 1-19 together to obtain output Diode AVOZ PULSER (device REAL-TIME AV-CLZ1-60 under test) OSCILLOSCOPE CABLE OUT Scope probe HIGH IMPEDANCE INPUT Series Norcomp 172-037-201-001 Connect SYNC resistance. TRIG DB-37 female connector with pins 20-37 OUTPUT R = 1Ω INPUT solder cup pins, mated to the together for TOTAL end of the AV-CLZ1-60 cable. the ground This can be user-supplied, Optional or the one in the supplied protection test load chassis can be used. diode. NOTE: BOTH DIODES ARE SHOWN ORIENTED FOR A POSITIVE OUTPUT. REVERSE BOTH DIODES FOR NEGATIVE OPERATION. The diagram above shows how high-impedance oscilloscope probe can be us ed to observe the waveform. However, since the load impedance is so low (1 Oh m), a 50 Ohm measurement system like that shown in the diagram below can also be used to observe the load waveform. An attenuator should be used to avoid damagi ng the oscilloscope input, since the load voltage can be as high as 100V. (Two SMA connectors are present in the AV-CTL1-ENC test load, and either can be used to connect the 50 Ohm coaxial cables through the chassis wall.) AVOZ PULSER REAL-TIME OSCILLOSCOPE OUT 20 dB ATTENUATOR 50 OHM INPUT Conventional SYNC Series resistance. TRIG 50 Ohm cable OUTPUT R = 1Ω TOTAL INPUT (for instance, RG-58 or RG-174 coaxial cable) __________________________________________________________________ 27 The diodes are shown oriented for positive polarity. Reverse them for n egative polarity models. There are several key points to note. As explained above, a resistance should be added in series with the diode load, to limit the maximum current. This resistance may also be used to monitor the current through the diode current. If conne cted as shown above, the resistor voltage displayed on the oscilloscope is directly p roportional to the diode current. It is essential the low-inductance resistors be used. Se veral non- inductive, medium power resistors should be used in parallel (for insta nce, four 3.9 Ohm 2W resistors). The Ohmite OY series (www.ohmite.com) or the RCD RSF 2B series (www.rcd-comp.com) are appropriate. It is also recommended that a low-capacitance, high-voltage, ultra-fast Schottky rectifier diode be connected for reverse-bias protection, especially for sensitiv e or costly devices under test. The STMicroelectronics (www.st.com) STPS3150 is an example of a suitable diode. Note, however, that the capacitance added by the protec tion diode may degrade the output rise time slightly. 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 be connected to the output using low inductance leads (as short as possible and as heavy a gauge as possible ). The voltage developed across an inductance L (in Henries), when the cur rent is changing at a rate given by dILOAD/dt (in Amps/sec), is: VSPIKE = L × d ILOAD/dt. For this reason, the length of leads used to connect the load to the ci rcuit board should be kept extremely short ( < 0.5 cm). ATTACHING AND DETACHING LOADS To avoid damaging the loads connected to main outputs, the loads should only be connected to or removed from the instrument when the instrument is off. Do not connect loads when the instrument is on and the output amplitude is not zero. This can cause sparking. MEASURING OUTPUT CURRENT Two basic methods can be used to observe the current waveform through t he load. The first is to observe the voltage waveform across the resistance present in the load. If the resistance is non-inductive, the voltage waveform will be directly prop ortional to the current waveform (Ohm's Law). Keeping the parasitic inductance low is c ritical for reliable measurements. If a diode is connected in series with the resis tance, it may be __________________________________________________________________ 28 advantageous to ensure the diode is placed before the resistance, so th at one end of the resistance is grounded. This will eliminate the need for differenti al voltage measurements. This method is shown in the "TEST ARRANGEMENT" section ab ove. Alternatively, a high-speed current probe or current transformer can be used to observe the current waveform. One possible model is the Pearson 2878 current tr ansformer (http://www.pearsonelectronics.com). However, this model will not opera te at the upper end of the AVOZ-A3-B pulse width range (2 us). It may be necessary to i ntroduce a significant lead length (i.e., inductance) to pass the conductor throug h the transformer. __________________________________________________________________ 29 START-UP CHECK-LIST FOR LOCAL CONTROL 1. Connect the supplied test load (AV-CTL1-ENC) to the rear-panel of t he mainframe, using the AV-CLZ1-60 cable. 2. Connect a cable from the SYNC OUT connector to the TRIG input of an oscilloscope. Set the oscilloscope to trigger externally. 3. Connect an oscilloscope probe to the signal side of the resistors i n the test load. It may be necessary to connect the probe using the SMA feed-throughs on the test load enclosure. On the oscilloscope, set the channel A vertical sc ale to 20 V/div, and the horizontal scale to 100 ns/div. (A 50 Ohm measurement sy stem, without a high impedance probe, can also be used if desired. This may b e more mechanically convenient. See the "TEST ARRANGEMENT" section for details .) 4. Turn on the instrument. The main menu will appear on the LCD. 5. To set the instrument to trigger from the internal clock at a PRF o f 1 kHz: 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 button. The frequency submenu will appear. Rotate the ADJUST knob until the frequency is set at 1 kHz. c) The arrow pointer should be pointing at the “Internal” choice. If i t is not, press MOVE until it is. d) Press CHANGE to return to the main menu. 6. To set the delay to 100 ns: a) Press the MOVE button until the arrow pointer is pointing at the de lay menu item. b) Press the CHANGE button. The delay submenu will appear. Rotate the ADJUST knob until the delay is set at 100 ns. c) Press CHANGE to return to the main menu. 7. To set the OUT pulse width to 500 ns: a) Press the MOVE button until the arrow pointer is pointing at the “P W” menu item. __________________________________________________________________ 30 b) Press the CHANGE button. The pulse width submenu will appear. Rotat e the ADJUST knob until the pulse width is set at 500 ns. c) The arrow 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. 8. At this point, nothing should appear on the oscilloscope. 9. To enable the output: a) Press the MOVE button until the arrow pointer is pointing at the ou tput 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. 10.To change the OUT output amplitude: a) Press the MOVE button until the arrow pointer is pointing at the AM P menu item. b) Press the CHANGE button. The amplitude submenu will appear. Rotate the ADJUST knob until the amplitude is set at 100 V (or -100V for “-N” unit s). c) Observe the oscilloscope. You should see 500 ns wide, 100V pulses o n the probe connected to the main output. d) Press CHANGE to return to the main menu. 11.Try varying the pulse width, by repeating step (7). As you rotate t he ADJUST knob, the pulse width on the oscilloscope will change. It should agree with the displayed value. 12.This completes the operational check. __________________________________________________________________ 31 CALIBRATION ADJUSTMENTS - SOFTWARE PROCEDURES ADJUSTING AMPLITUDE ACCURACY If it is found that the output amplitude settings (as set by the front- panel controls or programming commands) do not agree exactly with measured values of ampl itude (i.e., by examining the output on an oscilloscope), the amplitude calibration can be updated using software commands. The following procedure is suggested: 1) Connect a 1Ω high-power resistive load to the output. 2) Connect the pulse generator to a computer using the GPIB or RS232 po rts. 3) Turn on the pulse generator, and set the time controls (frequency, d elay, pulse width) to typical values. 4) Turn on the outputs. 5) Set the output amplitude to 100V. 6) Observe the voltage across the load. (For example, suppose it is 104 V). 7) Send the measured value to the instrument using the following comman d: diag:ampl:cal 104 The internal software compares the supplied measured value to the progr ammed value, and adjusts the internal calibration data to null out any differ ences. 8) Observe the voltage across the load again. The amplitude setting sho uld now agree with the measured value. Information on more extensive timing and amplitude calibration procedur es is available at http://www.avtechpulse.com/appnote/. __________________________________________________________________ 32 PROGRAMMING YOUR PULSE GENERATOR KEY PROGRAMMING COMMANDS The “Programming Manual for -B Instruments” describes in detail how to connect the pulse generator to your computer, and the programming commands themselv es. A large number of commands are available; however, normally you will only need a few of these. Here is a basic sample sequence of commands that might be sent t o the instrument after power-up: *rst (resets the instrument) trigger:source internal (selects internal triggering) frequency 10 Hz (sets the frequency to 10 Hz) pulse:width 100 ns (sets the pulse width to 100 ns) pulse:delay 1 us (sets the delay to 1 us) output on (turns on the output) source:volt 50V (sets the voltage amplitude to 50 Volts) For triggering a single event, this sequence would be more appropriate: *rst (resets the instrument) trigger:source hold (turns off all triggering) pulse:width 100 ns (sets the pulse width to 100 ns) output on (turns on the output) source:volt 50V (sets the voltage amplitude to 50 Volts) trigger:source immediate (generates a single non-repetitive trigger event) trigger:source hold (turns off all triggering) output off (turns off the output) To set the instrument to trigger from an external TTL signal applied to the rear-panel TRIG connector, use: *rst (resets the instrument) trigger:source external (selects internal triggering) pulse:width 100 ns (sets the pulse width to 100 ns) pulse:delay 1 us (sets the delay to 1 us) source:volt 50V (sets the voltage amplitude to 50 Volts) output on (turns on the output) These commands will satisfy 90% of your programming needs. __________________________________________________________________ 33 ALL PROGRAMMING COMMANDS For more advanced programmers, a complete list of the available command s is given below. These commands are described in detail in the “Programming Manua l for -B Instruments”. (Note: this manual also includes some commands that are n ot implemented in this instrument. They can be ignored.) Keyword Parameter Notes DIAGnostic: :AMPLitude :CALibration: [no query form] OUTPut: :[STATe] :PROTection :TRIPped? [query only] [SOURce]: :FREQuency [:CW | FIXed] [SOURce]: :VOLTage [:LEVel] [:IMMediate] [:AMPLitude] | EXTernal :PROTection :TRIPped? [query only] [SOURce]: :PULSe :PERiod :WIDTh :DCYCle :HOLD WIDTh | DCYCle :DELay :GATE :TYPE ASYNC | SYNC :LEVel HIgh | LOw STATUS: :OPERation :[EVENt]? [query only, always returns "0"] :CONDition? [query only, always returns "0"] :ENABle [implemented but not useful] :QUEStionable :[EVENt]? [query only, always returns "0"] :CONDition? [query only, always returns "0"] :ENABle [implemented but not useful] SYSTem: :COMMunicate :GPIB :ADDRess :SERial :CONTrol :RTS ON | IBFull | RFR :[RECeive] :BAUD 1200 | 2400 | 4800 | 9600 | 19200 | 38400 | 57600 | 115200 :ERRor __________________________________________________________________ 34 :[NEXT]? [query only] :COUNT? [query only] :VERSion? [query only] TRIGger: :SOURce INTernal | EXTernal | MANual | HOLD | IMMediate *CLS [no query form] *ESE *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 *STB? [query only] *TST? [query only] *WAI [no query form] __________________________________________________________________ 35 MECHANICAL INFORMATION TOP COVER REMOVAL If necessary, the interior of the instrument may be accessed by removin g the four Phillips screws on the top panel. With the four screws removed, the top cover may be slid back (and off). Always disconnect the power cord and allow the instrument to sit unpow ered for 10 minutes before opening the instrument. This will allow any internal sto red charge to discharge. There are no user-adjustable internal circuits. For repairs other than fuse replacement, please contact Avtech (info@avtechpulse.com) to arrange for the instrum ent to be returned to the factory for repair. Service is to be performed solely b y 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 install ed 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 outputs should be connected to shielded loads using shielded coaxial cables. Unused ou tputs should be terminated with shielded coaxial terminators or with shielded coaxia l dust caps, to prevent unintentional electromagnetic radiation. All cords and cables s hould be less than 3m in length. __________________________________________________________________ 36 MAINTENANCE REGULAR MAINTENANCE This instrument does not require any regular maintenance. On occasion, one or more of the four rear-panel fuses may require repla cement. 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 compres sed air to dislodge any accumulated dust. (See the “TOP COVER REMOVAL” section for instructions on accessing the interior.) No other cleaning is recommend ed. TRIGGER DAMAGE The rear-panel TRIG input, used in the external trigger mode, is protec ted 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 ti ming control board (the 4×10 inch board on the right side of the instrument). The IC that is most likely to fail under these conditions is installed in a socket. It is a standard TTL IC in a 16-pin plastic DIP package, model 74F151 or equiva lent. If you suspect that this IC has been damaged, turn off the power and re place this IC. It may be replaced by a 74F151, 74LS151, 74ALS151, or 74HCT151. __________________________________________________________________ WIRING DIAGRAMS WIRING OF AC POWER 1 2 3 4 5 6 Mains circuits - hazardous live. Do not attempt any repairs on this instrument beyond the fuse replacement procedures described A3 - BLACK in the manual. Contact Av tech if the instrument X1 requires serv icing. Serv ice is to be performed PS1 POWER SWITCH SW325-ND (CW INDUSTRIES GRS-4022-0013) WARNING solely by qualified service personnel. NORMALLY: ECP180PS24 1b 2b 156E, 156F, -HC UNITS, -IPGE: ECP180PS36 A4 - WHITE Molex 19002-0009. 0.187" x 0.032" 1 2 D D BD2 1a 2a PCB104G KEYPAD D1 CENTER IN STD SPACE USE 1/4" METAL STANDOFFS A1 - BROWN A2 - BLUE AMB AMB GND AMB L 1 GRN GRN GND - TO LCD 2 Safety earth ground / GRN - N 3 G2 - Primary earth ground / 10-WIRE HARNESS 4 + WP59GYW, SOLDERED 5 Protective conductor terminal. + 6 + G G3 G G X2 P N L CORCOM 6EGG1-2 POWER ENTRY MODULE M X R O Y G E V U G4 T O A JIG 104G TO ENCODER B1 (PCB 318A) ONLY 125W+ UV UNITS STD - ALL UNITS G1 C C Molex 19002-0001. 0.250" x 0.032". GND Molex 19073-0013 ring terminal, #8. GND GND J10 D D D Install green/yellow wires at bottom of stack, closest to wall. IN IN IN N N N C C C G G G +24V, NO OLO D D D Chassis ground post. +24V, NO OLO GND +24, NO OLO Secondary earth ground. J6 +5V NSY V V V V V D D V V POS OLO 0 5 5 5 N N 5 5 +5V REG 1 1 -5 + + + POS OLO K D S D D S D + + -1 G G N N P IN N N P N 20 AWG FAN NOT -5V OLO GND G A G T T X G E G X G HARNESSED -15V NEG OLO B N J2 I-E I-E +15V NSY J3 GND P A H H P9768-ND +15V REG C 20 AWG 20 OR 24 AWG J4 FAN1 +10V J1 + C N - 24 AWG 20 AWG D A F - J9 - FAN + B B A K J7 AMBER GND J5 GREEN PCB 158R5 BD1 PCB 158R5 A A Ti tle MAIN AC POWER, FOR PCB158R5, XP ECP Date Revisi on 10-Mar-2021 11A Z:\engineering\pcb\158\switching60hz.ddb - USAGE\158R5 ECP - v11A.sch 1 2 3 4 5 6 __________________________________________________________________ PCB 158R7 - LOW VOLTAGE POWER SUPPLY __________________________________________________________________ PCB 284C - HIGH VOLTAGE DC POWER SUPPLY __________________________________________________________________ PCB 156D - POLARITY CONTROL PCB (-PN UNITS) 1 2 3 4 5 6 R 2 8 R 2 3 1 K 3 K "UV- ON" IS HIGH IF: +1 5 V C 4 VC C 1) "UV+ HIGH" IS LOW, AND VC C 2) "POL" IS LOW. R 1 9 8 0 . 1 u F R 1 2 5 6 K R 1 6 3 K SU RF AC E MO UN T, ON B OTTOM. 1 K D 2 U4 B Q1 A D 1 J 4 1 R 2 0 5 U2 A M PQ6 0 0 2 R 3 3 R 3 5 R 2 4 2 HV 1 HV 2 3 7 UV + HIGH 2 U3 A NT R IG 1 0 K 2 U5 A 3 SM A1 OY OY 1 K 6 1 UV - O N 1 1 LM 3 5 8 3 3 6 4 0 4 4 5 -2 X5 R 2 9 4 LM 3 9 3 R 1 7 2 D2 1 K 7 4 A LS0 2 1 K 2 Q1 C 1 N 4 7 3 6 A 1 HV + 7 4 A C T0 8 M PQ6 0 0 2 1 3 4 1 HV W AR NING IF THE POLARITY IS SWITCHED, AND THE OPPOSITE ULTRAVOLT IS "UV+ ON" IS HIGH IF: VC C VC C R 2 6 R 2 7 1) "UV- HIGH" IS LOW, AND VC C 1 K 3 K 2) "POL" IS HIGH. R 1 3 R 1 4 3 K 1 K 7 Q1 B U2 B M PQ6 0 0 2 R 2 5 6 X6 UV - H IG H 5 U3 B PTR IG 5 SM A2 5 6 K 4 UV + ON 4 6 6 R 1 5 R 1 1 5 C C 3 . 9 K +1 5 V C 6 7 4 A LS0 2 1 K 0 Q1 D 1 HV - HV W AR NING 7 4 A C T0 8 M PQ6 0 0 2 9 8 J 5 U5 B 8 0 . 1 u F U2 C R 3 2 R 3 4 R 1 8 HV 3 HV 4 6 U4 A 8 TTL IN 2 7 R 2 1 SM A3 OY OY 1 K 3 1 0 1 5 1 9 1 0 K 6 4 0 4 4 5 -2 D1 2 1 N 4 7 3 6 A LM 3 5 8 7 4 A LS0 2 R 2 2 LM 3 9 3 5 1 4 J 2 VC C -1 5 V +1 5 V 1 HV RESISTORS USED 2 3 R L Y-PS 4 AVR-3: 100K + 100K R L Y U2 D 5 AM P 1 1 K1 AVR-4: 150K + 100K 6 R 3 0 THIS DRIVES THE OUTPUT POLARITY RELAY. PO L 1 3 R 3 1 1 6 7 + AVR-5: 220K + 120K 1 2 2 K 2 5 3 0 0 - 6 4 0 4 5 6 -7 3 4 AVR-7: 220K + 220K + R 1 0 7 4 A LS0 2 AVR-8: 470K + 470K 1 K AQ V2 2 1 B B R 3 W 4 . 7 K C 4 3 R 4 K2 W EA -P -1 5 V c c n n CP C133 3G U V R 5 W VC C U3 C + 4 . 7 K 5 K , PM AX C J 1 9 O VC C N C O N9 8 W R 8 1 2 X1 1 0 C R 3 6 C 1 2 3 4 5 6 7 8 9 W 5 K , NM IN C 3 C 5 C 7 0 . 1 u F 0 . 1 u F 0 . 1 u F 7 4 A C T0 8 3 0 0 +1 5 V C 1 6 -3 2 MO UN T +1 5 V R 7 J 3 X2 2 7 K U3 D 8 W 4 -1 5 V W 0 . 1 u F 1 2 C C C 3 6 -3 2 MO UN T 1 1 2 VC C 4 3 R 6 2 X4 1 3 1 1 R 9 R 2 K3 W 3 c c 1 0 K 1 0 K 6 4 0 4 5 6 -4 7 4 A C T0 8 A n n CP C133 3G U1 A 6 -3 2 MO UN T A U V LM 3 5 8 U1 B X3 - O 5 K , NM A X 4 C 2 6 T i t le N 7 R 1 EA -N PCB 156D, POLARITY SWITCHING W 1 2 5 C 6 -3 2 MO UN T 4 . 7 K R 3 7 C -1 5 V 0 . 1 u F Da te Re vis i on LM 3 5 8 9-Dec-2015 3 0 0 PR OV ID ES R/ C FIL TE RI N G Z:\mjcfiles\pcb\156\polr\polr.Ddb - PCB156D\PCB156D.sch 1 2 3 4 5 6 __________________________________________________________________ PCB 104H - KEYPAD / DISPLAY BOARD __________________________________________________________________ MAIN WIRING 1 2 3 4 5 6 BD1 VPRF LAN PCB 295E VSPARE D D SYNC CONN1 SYNC OLIMEX 28 +15V ON/OFF 27 +5V ON/OFF 26 MAIN OUT 25 SYNC OUT 24 EXT TRIG 23 GATE 22 XRLY 1 21 CONN4 XRLY 2 (DUAL PW) 20 GATE XRLY 3 (V-I) 19 XRLY 4 (EO) 18 CONN5 XRLY 5 +5V 17 EXT TRIG AMPLRNG 0 M1 16 AMPLRNG 1 PG-P 15 AMPLRNG 2 14 +24V, NO OLO LV+ N/C AMPLRNG 3 13 GND GND +5V AMPLRNG 4 E IG 12 T GND N/C O.SPEEDUP-RNG A R 11 G T HV N/C O.EA 10 C GND N/C O.SINE C LZ OUT 9 OS RNG O.TRI 8 GND TH O.SQU CHS GND 7 N/C O.LOGIC 6 N/C O.ZOUT/PWRNG 5 N/C O.POL 4 SPARE, 0-10V 3 IN PW, 0-10V 2 OFFSET, 0-10V 1 295E AMPLITUDE, 0-10V OUT V X D P 4 D F U N M O C W O C 2 N V A G A N N C S N C N + G PCB 284B PS1 USE 15/16" 6-32 STANDOFFS +24V, NO OLO GND OLO GND 284B +24V HV+ POS OLO HV+ GND -15V -15V CHANGES REQUIRED ON PCB 295E B +15V +15V NSY B +5V +5V AVOZ-A3-B: C9 = 3300 pF POLY (20 kHz) SSR HV- AVOZ-A4-B: C9 = 6800 pF POLY (10 kHz) EN HV- VC BD2 PCB104F KEYPAD R7 = 5K 3266W D2 = 1N5338 A R6 = 3.9K R8 = ZERO OHMS K R24,25 = 220 OY CHS GND R5 = NOT USED R9,10 = 4.7K OY R3 = NOT USED PS = P M30-S125/A/Y M X E V U T O A A A Ti tle AVOZ-A3-B-P, AVOZ-A4-B-P Date Revisi on 29-Apr-2019 9A Z:\mjcfiles\circuits\avoz\avoz.Ddb - AVOZ-A3-B\A3-B-P wiring - v9.sch 1 2 3 4 5 6 __________________________________________________________________ MAIN WIRING - DUAL-POLARITY UNITS (-PN) 1 2 3 4 5 6 D D OLO GND CHS GND POS OLO PCB 284B PCB 284B PS1 USE 15/16" 6-32 STANDOFFS PS2 USE 15/16" 6-32 STANDOFFS GND GND 284B 284B +24V HV+ +24V HV+ BD1 HV+ HV+ PCB104G KEYPAD GND GND -15V -15V A -15V -15V +15V +15V K +15V +15V +5V +5V +5V +5V P SSR HV- SSR HV- M X E V U EN HV- EN HV- IG T O A J VC VC R7 = NOT USED D2 = 1N5338 R7 = NOT USED D2 = 1N5338 R6 = NOT USED R8 = ZERO OHMS R6 = NOT USED R8 = ZERO OHMS R24,25 = 220 OY CHS GND R24,25 = 220 OY R5 = NOT USED R9,10 = 4.7K OY R5 = NOT USED R9,10 = 4.7K OY R3 = ZERO PS = M30-S125/A/Y R3 = ZERO PS = M30-S125/A/Y COAX C C CHANGES NEED ON PCB 156D: 1) R32 - R35 = 47K OY N P IN IG IG IG 2) JUMPER U1-3 TO J3-3 +24V NO OLO R R R T T T 3) REMOVE R1 +5V TO PH HARNESS X1 POLR, PCB156D UV- ON +5V EA N -15V V V IG D IG D +15V V 4 V 4 R N 5 2 R N 5 2 UV+ ON RV T G + + T G + + EA P RLY LZ1 OUT LZ1 OUT AMP MMCX MMCX HV+ POL HV- 156 USE 8414K-ND 6-32 1/2 INCH STANDOFFS B B SYNC CONN1 322A 322A 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 V V ) V V L G I E E ) E T T F F VF 0 U 0 A 4 3 2 1 0 5 -I) 1 0 0 O N IC O IG Q R F G G G G G W T U U F M1 M2 AUX -1 IN IV Y Y D D + + D D + + -1 .E E -1 -1 G R F .P R A O .S .T .S O L N N N N N L (E (V P L O /O /O L G T O R R PG-P N N V V PG-N N N V V GND , 0 O , 0 N N , 0 , 0 O W O O .A R R R R R R 4 3 A R T C IN A P G G H H G G H H T E .L T E /P O L L L L L X Y Y X X N AMP A O O C P V D E W O U R T P P P P P L L U E Y V V N S O U S P S M V F A U M M M M M R R (D 5 5 Y IT NO F P O A A A A A X X + 1 2 S L S + NC P O .Z Y O L M C R A X SW CHS GND CHS GND GATE O L NO IM C TRIG E NC X L A N +24V 295F BD2 GND PCB 295F A A CHANGES REQUIRED ON PCB 295F (20 kHz PRF LIM) +24V, NO OLO CONN3 1. INSTALL C9 = 3300pF POLY TRIG CONN2 CONN4 AVOZ-A3-B-PN, AVOZ-A4-B-PN GATE AMP (-EA UNITS ONLY) Printed Revisi on 10-Mar-2021 5A Z:\engineering\circuits\avoz\AVOz.Ddb - AVOZ-A3-B\A3-B-PN wiring - v5.s ch 1 2 3 4 5 6 __________________________________________________________________ PERFORMANCE CHECK SHEET __________________________________________________________________ Document Outline * [1]WARRANTY * [2]TECHNICAL SUPPORT * [3]TABLE OF CONTENTS * [4]INTRODUCTION * [5]SPECIFICATIONS * [6]REGULATORY NOTES + [7]FCC PART 18 + [8]EC DECLARATION OF CONFORMITY + [9]DIRECTIVE 2011/65/EU (RoHS) + [10]DIRECTIVE 2002/96/EC (WEEE) + [11]FIRMWARE LICENSING * [12]INSTALLATION + [13]VISUAL CHECK + [14]POWER RATINGS + [15]CONNECTION TO THE POWER SUPPLY + [16]PROTECTION FROM ELECTRIC SHOCK + [17]ENVIRONMENTAL CONDITIONS + [18]LABVIEW DRIVERS * [19]FUSES + [20]AC FUSE REPLACEMENT + [21]DC FUSE REPLACEMENT + [22]FUSE RATINGS * [23]FRONT PANEL CONTROLS * [24]REAR PANEL CONTROLS * [25]GENERAL INFORMATION - PULSE GENERATOR TIMING + [26]BASIC PULSE CONTROL + [27]TRIGGER MODES + [28]GATING MODES * [29]GENERAL INFORMATION - OPERATING INTO A LOAD + [30]AMPLITUDE CONTROL + [31]SELECTING THE SERIES RESISTANCE + [32]OUTPUT CONNECTIONS + [33]USING THE SUPPLIED TEST LOAD (AV-CTL1-ENC) + [34]TEST ARRANGEMENT + [35]LENZ’S LAW AND INDUCTIVE VOLTAGE SPIKES + [36]ATTACHING AND DETACHING LOADS + [37]MEASURING OUTPUT CURRENT * [38]START-UP CHECK-LIST FOR LOCAL CONTROL * [39]CALIBRATION ADJUSTMENTS - SOFTWARE PROCEDURES + [40]ADJUSTING AMPLITUDE ACCURACY * [41]PROGRAMMING YOUR PULSE GENERATOR + [42]KEY PROGRAMMING COMMANDS + [43]ALL PROGRAMMING COMMANDS * [44]MECHANICAL INFORMATION + [45]TOP COVER REMOVAL + [46]RACK MOUNTING + [47]ELECTROMAGNETIC INTERFERENCE * [48]MAINTENANCE + [49]REGULAR MAINTENANCE + [50]CLEANING + [51]TRIGGER DAMAGE * [52]WIRING DIAGRAMS + [53]WIRING OF AC POWER + [54]PCB 158R7 - LOW VOLTAGE POWER SUPPLY + [55]PCB 284C - HIGH VOLTAGE DC POWER SUPPLY + [56]PCB 156D - POLARITY CONTROL PCB (-PN UNITS) + [57]PCB 104H - KEYPAD / DISPLAY BOARD + [58]MAIN WIRING + [59]MAIN WIRING - DUAL-POLARITY UNITS (-PN) * [60]PERFORMANCE CHECK SHEET __________________________________________________________________ References 1. file:///root/tmp.html#2 2. file:///root/tmp.html#2 3. file:///root/tmp.html#3 4. file:///root/tmp.html#5 5. file:///root/tmp.html#6 6. file:///root/tmp.html#8 7. file:///root/tmp.html#8 8. file:///root/tmp.html#8 9. file:///root/tmp.html#9 10. file:///root/tmp.html#9 11. file:///root/tmp.html#10 12. file:///root/tmp.html#11 13. file:///root/tmp.html#11 14. file:///root/tmp.html#11 15. file:///root/tmp.html#11 16. file:///root/tmp.html#12 17. file:///root/tmp.html#13 18. file:///root/tmp.html#13 19. file:///root/tmp.html#14 20. file:///root/tmp.html#14 21. file:///root/tmp.html#15 22. file:///root/tmp.html#15 23. file:///root/tmp.html#16 24. file:///root/tmp.html#18 25. file:///root/tmp.html#20 26. file:///root/tmp.html#20 27. file:///root/tmp.html#21 28. file:///root/tmp.html#21 29. file:///root/tmp.html#23 30. file:///root/tmp.html#23 31. file:///root/tmp.html#23 32. file:///root/tmp.html#23 33. file:///root/tmp.html#24 34. file:///root/tmp.html#25 35. file:///root/tmp.html#27 36. file:///root/tmp.html#27 37. file:///root/tmp.html#27 38. file:///root/tmp.html#29 39. file:///root/tmp.html#31 40. file:///root/tmp.html#31 41. file:///root/tmp.html#32 42. file:///root/tmp.html#32 43. file:///root/tmp.html#33 44. file:///root/tmp.html#35 45. file:///root/tmp.html#35 46. file:///root/tmp.html#35 47. file:///root/tmp.html#35 48. file:///root/tmp.html#36 49. file:///root/tmp.html#36 50. file:///root/tmp.html#36 51. file:///root/tmp.html#36 52. file:///root/tmp.html#37 53. file:///root/tmp.html#37 54. file:///root/tmp.html#38 55. file:///root/tmp.html#39 56. file:///root/tmp.html#40 57. file:///root/tmp.html#41 58. file:///root/tmp.html#42 59. file:///root/tmp.html#43 60. file:///root/tmp.html#44