Avtech AVL-2D-B Instructions Manual
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Avtech AVL-2D-B Instructions Manual

240 volt, 1.5 ns rise time high performance pulse generator with ieee 488.2 and rs-232 control
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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 AVL-2D-B
240 VOLT, 1.5 ns RISE TIME
HIGH PERFORMANCE PULSE GENERATOR
WITH IEEE 488.2 AND RS-232 CONTROL
SERIAL NUMBER: ____________

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Summary of Contents for Avtech AVL-2D-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 AVL-2D-B 240 VOLT, 1.5 ns RISE TIME HIGH PERFORMANCE PULSE GENERATOR WITH IEEE 488.2 AND RS-232 CONTROL SERIAL NUMBER: ____________...

  • 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 AVAILABLE OPTIONS.....................6 SPECIFICATIONS......................7 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......................
  • Page 4 PCB 104F - KEYPAD / DISPLAY BOARD, 1/3..............38 PCB 104F - KEYPAD / DISPLAY BOARD, 2/3..............39 PCB 104F - KEYPAD / DISPLAY BOARD, 3/3..............40 MAIN WIRING........................41 PERFORMANCE CHECKSHEET...................42 Manual Reference: /fileserver2/officefiles/instructword/avl/AVL-2D-B,ed3.odt. Last modified May 1, 2019. Copyright © 2019 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 AVL-2D-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 AVL-2D-B is available with several options: -M Option: a monitor output is provided. -OS Option: an externally generated DC offset can be added to the output. -R5 Option: A rack mounting kit is available. The "-R5" rack mount kit may be installed after first removing the one Phillips screw on the side panel adjacent to the front handle.

  • Page 7: Specifications

    6) For monitor option add suffix -M. The monitor, when used, will load down the main output slightly, causing a 10% drop in the maximum main output amplitude. 7) A 50 Ohm load is required. Other loads may damage the instrument. Consult Avtech (info@avtechpulse.com) if you need to drive other load impedances.

  • Page 8: 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 9: Directive 2011/65/Eu (Rohs)

    < 100 ppm (0.01% 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 compliance (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.

  • Page 10: Firmware Licensing

    compliance. Normally, such responsibilities with lie with the representative, unless other arrangements (under Article 9) have been made. Requirements for WEEE compliance may include registration of products with local governments, reporting of recycling activities to local governments, and financing of recycling activities.

  • Page 11: 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 12: 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...

  • Page 13: 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 14: 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 15: 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 16: 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 17 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 18: 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 19 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 20: 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 240V. ...

  • Page 21: 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 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 22: Gating Modes

    GATING MODES Triggering can be suppressed by a TTL-level signal on the rear-panel GATE connector. The instrument can be set to stop triggering when this input high or low, using the front- panel gate menu or the appropriate programming commands. This input can also be set to act synchronously or asynchronously.

  • Page 23: Optional Features

    OPTIONAL FEATURES RACK MOUNTING, -R5 OPTION A rack mounting kit is available. The -R5 rack mount kit may be installed after first removing the one Phillips screw on the side panel adjacent to the front handle. DC OFFSET, -OS OPTION A DC offset can be added to the output signal by applying a DC voltage to the rear-panel OS connector.

  • Page 24: 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 25: 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 AVL-2D-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 26 Set the oscilloscope to trigger externally with the vertical setting at 100 mV/div for sampling oscilloscopes, or 100 V/div for real-time scopes, and the horizontal setting at 20 ns/div. 2. Turn on the AVL-2D-B. The main menu will appear on the LCD.
  • Page 27 3. To set the AVL-2D-B to trigger from the internal clock at a PRF of 10 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 c) Press MOVE until the arrow pointer is pointing at the “ON” choice. 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.

  • 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

    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 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 a ins circuits - ha z ard ou s live . Do not attem pt any repairs on this instrument bey ond the fuse replacement procedures described in the m anual. Contact Av tech if the instrument A3 - BLACK requires serv icing.

  • Page 35: Wiring Of Dc Power

    WIRING OF DC POWER FOR: - A VIR-3, -4,-4D (NOT -1, -2) - A VL FOR: - A VR-A -1-S2 - A VIR-1, -2, -4, -4D (NOT -3) - A VL-A V-1, A VL-2A (NOT -2D) - (NOT A VR-A -1-S2) M 10 PS, WITH PCB 235B +225V FIXED TO PG-B GND TO PG-B...

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

    PCB 158R4 - LOW VOLTAGE POWER SUPPLY...

  • Page 37: Pcb 235A - High Voltage Dc Power Supply

    PCB 235A - HIGH VOLTAGE DC POWER SUPPLY...

  • Page 38: 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 39: 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 40: 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 41: Main Wiring

    MAIN WIRING VPRF VSPARE SYNC CONN1 SYNC O LIM EX +15V ON/OFF -15V +5V ON/OFF M AIN OUT SYNC OUT EXT TRIG PG-P GATE +24V, NO OLO +24V -15V XRLY 1 CONN2 XRLY 2 (DUAL PW) GATE GND TO PG-B XRLY 3 (V-I) HV VAR TO PG-B +HV VAR...

  • Page 42: Performance Checksheet

    PERFORMANCE CHECKSHEET...

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