Avtech AVO-6A1-B Instructions Manual
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Avtech AVO-6A1-B Instructions Manual

50 volt / 1 amp laser diode driver 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 AVO-6A1-B
50 VOLT / 1 AMP
LASER DIODE DRIVER
WITH IEEE 488.2 AND RS-232 CONTROL
SERIAL NUMBER:
13895

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  • 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 AVO-6A1-B 50 VOLT / 1 AMP LASER DIODE DRIVER WITH IEEE 488.2 AND RS-232 CONTROL SERIAL NUMBER: 13895...

  • 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..............39 PCB 104F - KEYPAD / DISPLAY BOARD, 2/3..............40 PCB 104F - KEYPAD / DISPLAY BOARD, 3/3..............41 MAIN WIRING........................42 PERFORMANCE CHECK SHEET.................43 Manual Reference: /fileserver2/officefiles/instructword/avo-6/AVO-6A1-B,ed2.odt. Last modified July 12, 2019. Copyright © 2019 Avtech Electrosystems Ltd, All Rights Reserved.

  • Page 5: Introduction

    1A at repetition rates up to 10 kHz. The pulse width is variable from 50 ns to 5 us. Rise and fall times are fixed at less than 1 ns. The AVO-6A1-B includes an internal trigger source, but it can also be triggered or gated by an external source. A front-panel pushbutton can also be used to trigger the instrument.

  • Page 6: Specifications

    Optional output device The standard solder terminals can be replaced by a plug-in or screw-in socket. sockets: http://www.avtechpulse.com/laser-bias/avx-s1 for examples. Contact Avtech (info@avtechpulse.com) with your special device mounting requirement. Connectors, other: Power requirements: 100 - 240 Volts, 50 - 60 Hz Dimensions: Mainframe: 100mm x 430 mm x 375mm (3.9”...

  • 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) 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...

  • Page 9: Firmware Licensing

    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 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...

  • 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 5. KEYPAD . 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.

  • Page 17: Rear Panel Controls

    REAR PANEL CONTROLS GATE TRIG RS-232 GPIB 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. 2.
  • Page 18 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. A user name (“admin”) and a password (“default”, as shipped from the factory) are required when logging into a serial terminal session.

  • Page 19: General Information

    GENERAL INFORMATION AMPLITUDE CONTROL The AVO-6A1-B consists of two parts, the mainframe and the output module. The mainframe is a voltage pulser, which generates up to 50V (V The output module contains a 50Ω series resistance, and packaged diodes may be soldered to the output terminals of this module.

  • Page 20: Sma Option

    The resistance must be capable of dissipating up to 2.5 Watts of average power, if the AVO-6A1-B is to be used over its full range of capabilities. -SMA OPTION On units with the -SMA option, the standard OUT and GND solder terminals are replaced with a single SMA female connector (with the OUT signal on the center conductor, and the connector shield being GND).

  • Page 21: Basic Test Arrangement - With Output Module

    REAL-TIME AVO-6 OSCILLOSCOPE MAINFRAME SCOPE PROBE SMA OUTPUT CHANNEL A CONNECTOR 50Ω TEST POWER LOAD TRIG SYNC INPUT OUTPUT ALL CABLES: 50 OHM COAXIAL Since the AVO-9H-B-P1B can generate pulses with subnanosecond rise times, it may be necessary to use a sampling oscilloscope, rather than a real-time oscilloscope. In this case, the test arrangement should be altered as shown below: SAMPLING AVO-6...

  • Page 22: Basic Pulse Control

    SAMPLING AVO-6 OSCILLOSCOPE, MAINFRAME AVO-6A1-T BW > 5 GHz CONNECTOR ATTENUATOR ATTENUATOR 50 OHM INPUT POWER CURRENT PROBE TRIG SYNC INPUT OUTPUT Bold lines = coaxial cables A fast current probe should be used to monitor the current waveform. Factory testing is conducted using an Integrated Sensor Technologies model 711S current probe (https:// www.isensortech.com/).

  • Page 23: Trigger Modes

    100 ns, FIXED SYNC OUT (generated by the 3V, FIXED internal oscillator) DELAY < 0 PULSE WIDTH AMPLITUDE, VARIABLE MAIN OUTPUT The next figure illustrates the relationship between the signal when an external TTL- level trigger is used: > 50 ns TRIG TTL LEVELS (external input)

  • Page 24: Gating Modes

     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 using the appropriate programming commands.

  • Page 25: Operational Check

    2.Turn on the AVO-6A1-B. The main menu will appear on the LCD. 3.To set the AVO-6A1-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 26 4.To set the delay to 1 us: a)Press the MOVE button until the arrow pointer is pointing at the delay menu item. b)Press the CHANGE button. The delay submenu will appear. Rotate the ADJUST knob until the delay is set at 1 us. c)The arrow pointer should be pointing at the “Normal”...
  • Page 27 2.Turn on the AVO-6A1-B. The main menu will appear on the LCD. 3.To set the AVO-6A1-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 a)Press the MOVE button until the arrow pointer is pointing at the pulse width menu item. b)Press the CHANGE button. The pulse width submenu will appear. Rotate the ADJUST knob until the pulse width is set at 1 us. c)Press CHANGE to return to the main menu. 6.At this point, nothing should appear on the oscilloscope.

  • 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

    Always disconnect the power cord before opening the instrument. 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. Caution: High voltages are present inside the instrument during normal operation.

  • 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 . Do not attempt any repairs on this instrument beyond the fuse replacement procedures described in the manual . Contact Av tech if the instrument A3 - BLACK requires serv icing.

  • Page 35: Wiring Of Dc Power

    WIRING OF DC POWER M 10 PS, WITH PCB 235B 0 TO +100V VAR, TO PG B/C PG SSR +24V, NO OLO OP1B AM P, PIN 1 +24V, NO OLO +24, NO OLO +5V NSY POS OLO 235B +5V REG POS OLO 20 AWG OLO GND...

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

    PCB 158R4 - LOW VOLTAGE POWER SUPPLY...

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

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

  • Page 38: Pcb 217A - Relay Driver

    PCB 217A - RELAY DRIVER K E Y S T O N E 6 2 1 B R A C K E T P S 7 1 0 A - 1 A P S 7 1 0 A - 1 A K E Y S T O N E 6 2 1 B R A C K E T 1 .

  • Page 39: 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 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 "A"...

  • Page 42: Main Wiring

    MAIN WIRING +24V, NO OLO HV, NO OLO HV OUT LV IN HV OUT LV IN PCB 217A, HIGH-I RELAY DRIVER, +24V VPRF VSPARE SYNC CONN2 PG SSR SYNC O LIM EX +15V ON/OFF +15V NSY +5V ON/OFF M AIN OUT NORMALLY S/N 13895 O NLY -15V...

  • Page 43: Performance Check Sheet

    PERFORMANCE CHECK SHEET...

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