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AVTECH ELECTROSYSTEMS AVRK-3-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 AVRK-3-B
550 VOLTS, < 4 ns RISE TIME
HIGH PERFORMANCE PULSE GENERATOR
WITH IEEE 488.2 AND RS-232 CONTROL
SERIAL NUMBER:
13915

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Summary of Contents for AVTECH ELECTROSYSTEMS AVRK-3-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 AVRK-3-B 550 VOLTS, < 4 ns RISE TIME HIGH PERFORMANCE PULSE GENERATOR WITH IEEE 488.2 AND RS-232 CONTROL SERIAL NUMBER: 13915...

  • Page 2: Warranty

    WARRANTY Avtech Electrosystems Ltd. warrants products of its manufacture 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, Avtech shall at its option repair or replace said defective item.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS WARRANTY........................2 TECHNICAL SUPPORT....................2 TABLE OF CONTENTS....................3 INTRODUCTION.......................5 AVAILABLE OPTIONS.....................6 HIGH-VOLTAGE PRECAUTIONS..................7 SPECIFICATIONS......................8 REGULATORY NOTES....................9 FCC PART 18.......................... 9 EC DECLARATION OF CONFORMITY..................9 DIRECTIVE 2011/65/EU (RoHS)..................10 DIRECTIVE 2002/96/EC (WEEE)..................10 FIRMWARE LICENSING.......................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......................
  • Page 4 PCB 104F - KEYPAD / DISPLAY BOARD, 1/3..............39 PCB 104F - KEYPAD / DISPLAY BOARD, 2/3..............40 PCB 104F - KEYPAD / DISPLAY BOARD, 3/3..............41 MAIN WIRING........................42 PERFORMANCE CHECKSHEET...................43 Manual Reference: /fileserver2/officefiles/instructword/avrk/AVRK-3-B,ed3.odt. Last modified August 22, 2019. Copyright © 2019 Avtech Electrosystems Ltd, All Rights Reserved.

  • Page 5: Introduction

    Instruments with the "-P" model suffix can generate positive pulses, whereas instruments with the "-N" model suffix can generate negative pulses. The AVRK-3-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: Available Options

    AVAILABLE OPTIONS The AVRK-3-B is available with several options: -OS Option: an externally generated DC offset (± 50 Volts, 250 mA DC maximum) can be added to the output. -EA Option: the amplitude can be controlled by an externally generated 0 to +10V analog control voltage.

  • Page 7: High-Voltage Precautions

    HIGH-VOLTAGE PRECAUTIONS CAUTION: This instrument provides output voltages as high as 550 Volts under normal operating conditions, and generates up to 650V internally, so extreme caution must be employed when using this instrument. The instrument should only be used by individuals who are thoroughly skilled in high voltage laboratory techniques.

  • Page 8: Specifications

    SPECIFICATIONS Model: AVRK-3-B Amplitude 2,3,8 < 110 to 550 Volts (50Ω load required) Rise time (20%-80%): ≤ 4 ns (for all amplitudes and pulse widths) Fall time (80%-20%): At 110V At 550V At minimum PW: ≤ 6 ns ≤ 4 ns At maximum PW: ≤...

  • Page 9: Regulatory Notes

    This instrument does not normally require regular maintenance to minimize interference potential. However, if loose hardware or connectors are noted, they should be tightened. Contact Avtech (info@avtechpulse.com) if you require assistance. EC DECLARATION OF CONFORMITY Avtech Electrosystems Ltd. P.O. Box 5120, LCD Merivale Ottawa, Ontario Canada K2C 3H5 declare that this pulse generator meets the intent of Directive 2004/108/EG for Electromagnetic Compatibility.

  • Page 10: Directive 2011/65/Eu (Rohs)

    (also known as “RoHS Recast”). In addition, this declaration of conformity is issued under the sole responsibility of Avtech Electrosystems Ltd. Specifically, products manufactured do not contain the substances listed in the table below in concentrations greater than the listed maximum value.

  • Page 11: Firmware Licensing

    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. Normally, such responsibilities with lie with the representative, unless other arrangements (under Article 9) have been made.

  • Page 12: 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 13: Protection From Electric Shock

    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”...

  • Page 14: Environmental Conditions

    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 decreasing linearly to 50 % relative humidity at 40 °C;...

  • Page 15: 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 16: 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 17: 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 18 of +3 Volts to R > 1kΩ 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 19: 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 20 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 21: 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 550V. ...

  • Page 22: Trigger Modes

    > 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 Figure C As before, if the delay is negative, the order of the SYNC and OUT pulses is reversed. In general, the delay, pulse width, and frequency (when in the internal mode), of the OUT pulse can be varied with front panel controls or via the GPIB or RS-232 computer interfaces.

  • Page 23: Gating Modes

    WARNING: The output stage may be damaged if triggered by an external signal at a pulse repetition frequency greater than 1 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 24 Avtech suggest the Midwest Microwave ATT-0527-XX-SMA-07 family of fixed 12 GHz / 20 Watt attenuators, or the Mini-Circuits BW-SXXW20+ family of 18 GHz / 20 Watt attenuators, for use with the AVRK-3-B. For more information, please see the Avtech application note “How Can I Extend the...

  • Page 25: 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 26: Operational Check

    OPERATIONAL CHECK This section describes a sequence to confirm the basic operation of the instrument. It should be performed after receiving the instrument. It is a useful learning exercise as well. Before proceeding with this procedure, finish reading this instruction manual thoroughly.
  • Page 27 2. Turn on the AVRK-3-B. The main menu will appear on the LCD. 3. To set the AVRK-3-B to trigger from the internal clock at a PRF of 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.
  • Page 28 a) Press the MOVE button until the arrow pointer is pointing at the output 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. 8.

  • Page 29: 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 30: 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 31 :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 32: Mechanical Information

    MECHANICAL INFORMATION TOP COVER REMOVAL If necessary, the interior of the instrument may be accessed by removing 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 unpowered for 10 minutes before opening the instrument.

  • Page 33: 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 34: 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. Contact Av tech if the instr ument 156E, 156F, -HC UNITS, -IPGE: ECP180PS36 M olex 19002-0009.

  • Page 35: Wiring Of Dc Power

    WIRING OF DC POWER CH AN GE S RE QUIR ED O N PC B 158R 4: 1) AD D U 10 = PY B15-Q24-S5 2) AD D C 29, C 30 = 47uF ,35V 3) AD D C 31 = 2.2u F C ER 4) AD D L 6, L8 = 100 u H (7447452101) 5) AD D J8 = 640445-4 PCB 158R4...

  • Page 36: Pcb 158R4 - Low Voltage Power Supply

    PCB 158R4 - LOW VOLTAGE POWER SUPPLY...

  • Page 37: Pcb 284B - High-Voltage Power Supply

    PCB 284B - HIGH-VOLTAGE POWER SUPPLY...

  • Page 38: Pcb 216E - Op Amp Tweaks

    PCB 216E - OP AMP TWEAKS...

  • Page 39: Pcb 104F - Keypad / Display Board, 1/3

    PCB 104F - KEYPAD / DISPLAY BOARD, 1/3 Amp 5 4 9 99 1 0-1 , 1 0 p i n s traig h t h ead er LC D-BU TT LC D-BU TT. SCH SD A SD A SC L SC L GN D GN D...

  • Page 40: 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 41: 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 "...

  • Page 42: Main Wiring

    MAIN WIRING V PRF V SPARE -P U NIT S ON LY SYNC A VRK-PG-N CON N2 CONN7 O UT +24V NO OLO -15V SYNC O LIM EX CHS GND AVX-R6 +15V ON/OFF +5V ON/OFF M 30 PS, WITH PCB 282B H V1 M AIN OUT SYNC OU T...

  • Page 43: Performance Checksheet

    PERFORMANCE CHECKSHEET...

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