Avtech AVRF-4A-B Instructions Manual
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Avtech AVRF-4A-B Instructions Manual

High performance pulse generator
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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) or +1-613-686-6675 (Intl)
BOX 5120, LCD MERIVALE
http://www.avtechpulse.com/
Fax: 800-561-1970 (USA & Canada) or +1-613-686-6679 (Intl)
OTTAWA, CANADA K2C3H5
INSTRUCTIONS
MODEL AVRF-4A-B
400 VOLT
HIGH PERFORMANCE PULSE GENERATOR
WITH IEEE 488.2 AND RS-232 CONTROL
SERIAL NUMBER:
13960

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Summary of Contents for Avtech AVRF-4A-B

  • Page 1 Tel: 888-670-8729 (USA & Canada) or +1-613-686-6675 (Intl) BOX 5120, LCD MERIVALE http://www.avtechpulse.com/ Fax: 800-561-1970 (USA & Canada) or +1-613-686-6679 (Intl) OTTAWA, CANADA K2C3H5 INSTRUCTIONS MODEL AVRF-4A-B 400 VOLT HIGH PERFORMANCE PULSE GENERATOR WITH IEEE 488.2 AND RS-232 CONTROL SERIAL NUMBER: 13960...

  • Page 2: Warranty

    Avtech product is found to be defective, Avtech shall 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 ratings.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS WARRANTY........................2 TECHNICAL SUPPORT....................2 TABLE OF CONTENTS....................3 INTRODUCTION.......................5 SPECIFICATIONS......................6 REGULATORY NOTES....................7 FCC PART 18.......................... 7 EC DECLARATION OF CONFORMITY..................7 DIRECTIVE 2011/65/EU (RoHS).....................8 DIRECTIVE 2002/96/EC (WEEE)....................8 FIRMWARE LICENSING......................9 INSTALLATION......................10 VISUAL CHECK........................10 POWER RATINGS........................ 10 CONNECTION TO THE POWER SUPPLY................10 PROTECTION FROM ELECTRIC SHOCK................11 ENVIRONMENTAL CONDITIONS..................12 LABVIEW DRIVERS......................
  • Page 4 PCB 104F - KEYPAD / DISPLAY BOARD, 1/3..............40 PCB 104F - KEYPAD / DISPLAY BOARD, 2/3..............41 PCB 104F - KEYPAD / DISPLAY BOARD, 3/3..............42 MAIN WIRING........................43 PERFORMANCE CHECKSHEET...................44 Manual Reference: /fileserver2/officefiles/instructword/avrf/AVRF-4A-B,ed1_corr1.odt. Last modified November 4, 2020. Copyright © 2020 Avtech Electrosystems Ltd, All Rights Reserved.

  • Page 5: Introduction

    A 50 Ohm load is required for proper operation. The output stage may be damaged if the output is not terminated into a 50Ω load. The AVRF-4A-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 used to trigger the instrument.

  • Page 6: Specifications

    5) 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 laboratory. However, Avtech itself does not claim any...

  • Page 7: Regulatory Notes

    If interference is observed, check that appropriate well-shielded cabling 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 adequately shielded. It may be necessary to enclose the load in a metal enclosure.

  • Page 8: Directive 2011/65/Eu (Rohs)

    < 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 Avtech will have completed a “WEEE Responsibility Agreement” form, accepting responsibility for WEEE...

  • Page 9: Firmware Licensing

    (as mandated in Directive 2002/96/EC of the European Union and local laws) on behalf of the customer, as provided for under Article 9 of Directive 2002/96/EC. Customers who have purchased Avtech equipment through local representatives should consult with the representative to determine who has responsibility for WEEE compliance.

  • Page 10: Installation

    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 displays (LCDs), and the handles. Confirm that a power cord, a GPIB cable, and two instrumentation manuals (this manual and the “Programming Manual for -B Instruments”) are with the instrument.

  • Page 11: Protection From Electric Shock

    5. Do not attempt any repairs on the instrument, beyond the fuse replacement procedures described in this manual. Contact Avtech technical support (see page 2 for contact information) if the instrument requires servicing. Service is to be...

  • Page 12: Environmental Conditions

    6. no pollution or only dry, non-conductive pollution. LABVIEW DRIVERS A LabVIEW driver for this instrument is available for download on the Avtech web site, at http://www.avtechpulse.com/labview. A copy is also available in National Instruments' Instrument Driver Library at http://www.natinst.com/.

  • Page 13: Fuses

    FUSES This instrument contains four fuses. All are accessible from the rear-panel. Two protect the AC prime power input, and two protect the internal 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...

  • Page 14: Dc Fuse Replacement

    DC FUSE REPLACEMENT The DC fuses may be replaced by inserting the tip of a flat-head screwdriver 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: Recommended Replacement Part Nominal Fuses...

  • Page 15: Front Panel Controls

    FRONT PANEL CONTROLS 1. POWER Switch . This is the main power switch. When turning the instrument on, there is normally a delay of 10 seconds before anything is shown on the main display, as the internal operating system boots up. If the main menu does not appear after 30 seconds, turn off the instrument and leave it off for at least 60 seconds before applying power again.
  • Page 16 of +3 Volts to R > 50Ω with a pulse width of approximately 100 ns. 5. LIQUID CRYSTAL DISPLAY (LCD) . This LCD is used in conjunction with the keypad to change the instrument settings. Normally, the main menu is displayed, which lists the key adjustable parameters and their current values.

  • Page 17: Rear Panel Controls

    REAR PANEL CONTROLS GATE TRIG RS-232 GPIB Note: some connectors may be in different positions than shown above, depending on the exact combination of options ordered. 1. AC POWER INPUT . An IEC-320 C14 three-pronged recessed male socket is provided on the back panel for AC power connection to the instrument. One end of the detachable power cord that is supplied with the instrument plugs into this socket.
  • Page 18 6. GPIB Connector . A standard GPIB cable can be attached to this connector to allow the instrument to be computer-controlled. See the “Programming Manual for -B Instruments” for more details on GPIB control. 7. RS-232 Connector. A standard serial cable with a 25-pin male connector can be attached to this connector to allow the instrument to be computer-controlled.

  • Page 19: General Information

    GENERAL INFORMATION BASIC PULSE CONTROL This instrument can be triggered by its own internal clock or by an external TTL trigger signal. In either case, two output channels respond to the trigger: OUT and SYNC.  OUT. This is the main output. The maximum output voltage is 400V. ...

  • Page 20: Trigger Modes

    The next figure illustrates the relationship between the signal when an external TTL- level trigger is used: > 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...

  • Page 21: Gating Modes

    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.

  • Page 22: Protecting Your Instrument

    PROTECTING YOUR INSTRUMENT TURN OFF INSTRUMENT WHEN NOT IN USE The lifetime of the switching elements in the pulse generator module is proportional to the running time of the instrument. For this reason the prime power to the instrument should be turned off when 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.

  • Page 23: Operational Check

    A 50 Ohm load is required for proper operation. The output stage may be damaged if the output is not terminated into a 50Ω load. The AVRF-4A-B output may be observed using either a high-speed sampling oscilloscope, or a slower real-time oscilloscope. To accurately observe these rising and falling edges, a sampling oscilloscope with a bandwidth of 2 GHz is required.
  • Page 24 100 V/div for real-time scopes, and the horizontal setting at 50 ns/div. 2. Turn on the AVRF-4A-B. The main menu will appear on the LCD. 3. To set the AVRF-4A-B to trigger from the internal clock at a PRF of 5 kHz:...
  • Page 25 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 5 kHz. c) The arrow pointer should be pointing at the “Internal”...
  • Page 26 d) Press CHANGE to return to the main menu. 8. To change the output amplitude: a) Press the MOVE button until the arrow pointer is pointing at the amplitude menu item. b) Press the CHANGE button. The amplitude submenu will appear. Rotate the ADJUST knob until the amplitude is set at +200V (or -200V for "-N"...

  • Page 27: Programming Your Pulse Generator

    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 themselves. A large number of commands are available; however, normally you will only need a few of these.

  • Page 28: All Programming Commands

    ALL PROGRAMMING COMMANDS For more advanced programmers, a complete list of the available commands is given below. These commands are described in detail in the “Programming Manual for -B Instruments”. (Note: this manual also includes some commands that are not implemented in this instrument.
  • Page 29 :SOURce INTernal | EXTernal | 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]...

  • Page 30: Mechanical Information

    There are no user-adjustable internal circuits. For repairs other than fuse replacement, please contact Avtech (info@avtechpulse.com) to arrange for the instrument to be returned to the factory for repair. Service is to be performed solely by qualified service personnel.

  • Page 31: Maintenance

    MAINTENANCE REGULAR MAINTENANCE This instrument does not require any regular maintenance. On occasion, one or more of the four rear-panel fuses 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 dislodge any accumulated dust.

  • Page 32: Wiring Diagrams

    WIRING DIAGRAMS WIRING OF AC POWER M ains circuits - haz ardous live . A3 - BLACK Do not attempt any repairs on this instrument POWER SWIT CH SW325-ND (CW INDUSTRIES GRS-4022-0013) beyond the fuse replacement procedures described NORMALLY: ECP180PS24 in the manual .

  • Page 33: Wiring Of Dc Power

    WIRING OF DC POWER UNDER J12 - FO R T R BIAS ST ABILITY 470uF,16V 470uF,16V HIGH CURR +15V HIGH CURR -15V +24V, NO OLO +24V, NO OLO +24, NO OLO +5V NSY POS OLO +5V REG POS OLO 20 AWG OLO GND -15V NEG OLO...

  • Page 34: Pcb 158R4 - Low Voltage Power Supply

    PCB 158R4 - LOW VOLTAGE POWER SUPPLY...

  • Page 35: Pcb 284B - High Voltage Discharge Board

    PCB 284B - HIGH VOLTAGE DISCHARGE BOARD...

  • Page 36: Pcb 183A-S And 183A-P Capacitor Banks

    PCB 183A-S AND 183A-P CAPACITOR BANKS 183A-S (SERIES CAPACIT OR BANK) 7 2 00 K -ND, Mfg . 7 2 0 0, 4-4 0 th read stando ff 3 /8" HV + GN D 7 2 00 K -ND, Mfg . 7 2 0 0, 4-4 0 th read stando ff 3 /8" X1 1 7 2 00 K -ND, Mfg .

  • Page 37: Pcb 216E - Prf / Pw / Tr Adjust

    PCB 216E - PRF / PW / TR ADJUST...

  • Page 38: Pcb 231A - Dc Bias Source

    PCB 231A - DC BIAS SOURCE...

  • Page 39: Pcb 156D - Polarity Control Board (-Pn Units Only)

    PCB 156D - POLARITY CONTROL BOARD (-PN UNITS ONLY) R2 8 R2 3 "UV- ON" IS HIGH IF: 1) "UV+ HIGH" IS LOW, AND +1 5 V VC C VC C 2) "POL" IS LOW. R1 9 R1 2 0 . 1 u F R1 6 5 6 K SU RF AC E MOUN T , ON B OTTOM.

  • Page 40: Pcb 104F - Keypad / Display Board, 1/3

    PCB 104F - KEYPAD / DISPLAY BOARD, 1/3 Amp 5 4 9 9 9 1 0 -1 , 1 0 p in strai g h t h ead er LC D-BU TT LC D-BU TT. SCH SD A SD A SC L SC L GN D...

  • Page 41: Pcb 104F - Keypad / Display Board, 2/3

    PCB 104F - KEYPAD / DISPLAY BOARD, 2/3 U4 A VC C C1 0 VC C BU T1 VC C 2 . 2 u F C1 5 C1 3 0 . 1 u F 0 . 1 u F 0 . 1 u F 0 .

  • Page 42: Pcb 104F - Keypad / Display Board, 3/3

    PCB 104F - KEYPAD / DISPLAY BOARD, 3/3 VC C VC C 0 . 1 u F 2 . 2 u F GN D VC C VC C VC C SD A SD A SC L SC L GN D PA D3 PA D4 PC F8 5 7 4 AN (MU ST HA VE "A"...

  • Page 43: Main Wiring

    MAIN WIRING PCB 183A-S P3,R3 N 3,R6 A PD WITH PCB 284B APD WITH PCB 284B USE 1/2" ST ANDOFFS USE 15/16" 6-32 ST AN DOFFS U SE 15/16" 6-32 ST AN DOFFS G ND P1-P2,N1-N 2: 220uF, 400V OLO GN D 284B O LO GND 284B...

  • Page 44: Performance Checksheet

    PERFORMANCE CHECKSHEET...

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