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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)
BOX 5120, LCD MERIVALE
http://www.avtechpulse.com/
or +1-613-686-6675 (Worldwide)
OTTAWA, CANADA K2C3H5
INSTRUCTIONS
MODEL AVG-4C2-B
920 Volt, 10 kHz IMPULSE GENERATOR
WITH IEEE 488.2 AND RS-232 CONTROL
SERIAL NUMBER:
14133
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Summary of Contents for AVTECH ELECTROSYSTEMS AVG-4C2-B
- Page 1 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 AVG-4C2-B 920 Volt, 10 kHz IMPULSE GENERATOR WITH IEEE 488.2 AND RS-232 CONTROL SERIAL NUMBER: 14133...
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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 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 FUSES..........................13... - Page 4 PCB 168B - HIGH VOLTAGE DC POWER SUPPLY............35 PCB 94H - ALARM BOARD....................36 PCB 104G - KEYPAD / DISPLAY BOARD................37 MAIN WIRING........................38 PERFORMANCE CHECK SHEET.................39 Manual Reference: /fileserver2/officefiles/instructword/avg/AVG-4C2-B,ed3.odt. Last modified May 12, 2021. Copyright © 2021 Avtech Electrosystems Ltd, All Rights Reserved.
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Page 5: Introduction
920V at repetition rates up to 10 kHz into 50Ω loads. The pulse width is fixed at ≤ 5 ns (measured at 20% rise time). The AVG-4C2-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
SPECIFICATIONS Model AVG-4C2-B Amplitude 2,7,8 150 - 920 V Pulse width, measured at: ≤ 5 ns, at 20% Rise time (20%-80%): ≤ 1.5 ns Fall time (80%-20%): ≤ 3 ns PRF: 0 to 10 kHz Required load: 50Ω Polarity Positive or negative or both (specify) GPIB &... -
Page 7: 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 8: 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 9: 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 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
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 12: 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 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.
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Page 17: Rear Panel Controls
REAR PANEL CONTROLS GATE LOCK 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. - 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.
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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. The OUT channel is the signal that is applied to the load. Its amplitude and pulse width are variable. -
Page 20: Trigger Modes
> 50 ns TRIG TTL LEVELS (external input) (0V and 3V-5V) PROPAGATION DELAY (FIXED) 100 ns, FIXED SYNC OUT 3V, FIXED PULSE WIDTH DELAY > 0 (VARIABLE) (FIXED) AMPLITUDE, VARIABLE MAIN OUTPUT Figure C As before, if the delay is negative, the order of the SYNC and OUT pulses is reversed. TRIGGER MODES This instrument has four trigger modes: ... -
Page 21: Amplitude Drift
will complete the full pulse width if the output is high, and then stop triggering. Pulses are not truncated. AMPLITUDE DRIFT After setting a particular amplitude, it may take up to 3 minutes (typically) for the pulse generator circuitry to reach thermal equilibrium. The initial amplitude may be up to ~10% less than the set amplitude until the circuitry has warmed up. -
Page 22: Available Options
AVAILABLE OPTIONS -M OPTION This option provides a monitor output, which is an attenuated replica of the main output. The monitor is connected to the main output through a 450 Ohm resistor, which results in an attenuation of approximately 20 dB (i.e., ÷10) when the monitor output is terminated with a 50 Ohm load. -
Page 23: 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 24: 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 25 3. Turn on the AVG-4C2-B. The main menu will appear on the LCD. 4. To set the AVG-4C2-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 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 +920V (or -920V for "-N"...
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Page 27: 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 28: 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 29: Programming Your Impulse Generator
PROGRAMMING YOUR IMPULSE GENERATOR KEY PROGRAMMING COMMANDS The “Programming Manual for -B Instruments” describes in detail how to connect the impulse 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 *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 <numeric value> *STB? [query only] *TST? [query only] *WAI [no query form]...
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Page 32: Wiring Diagrams
WIRING DIAGRAMS WIRING OF AC POWER... -
Page 33: Wiring Of Dc Power
WIRING OF DC POWER +15V HIGH CURR +24V, NO OLO +24V, NO OLO +24, NO OLO +5V NSY POS OLO +5V REG POS OLO 20 AWG OLO GND -15V NEG OLO +15V NSY +15V REG 20 AWG 20 O R 24 AWG +10V 24 AWG 20 AWG... -
Page 34: Pcb 158R5 - Low Voltage Power Supply
PCB 158R5 - LOW VOLTAGE POWER SUPPLY... -
Page 35: Pcb 168B - High Voltage Dc Power Supply
PCB 168B - HIGH VOLTAGE DC POWER SUPPLY 1 N49 3 7 1 N49 3 7 HV WA RN ING HV WA RN ING 6 4 04 4 5 -2 6 4 04 4 5 -2 1 N4 9 3 7 1 N49 3 7 1 0 0 OY R1 0... -
Page 36: Pcb 94H - Alarm Board
PCB 94H - ALARM BOARD... -
Page 37: Pcb 104G - Keypad / Display Board
PCB 104G - KEYPAD / DISPLAY BOARD... -
Page 38: Main Wiring
MAIN WIRING -LVA UNITS ONLY HV, NO OLO HV O UT LV IN HV O UT C HANG ES REQ UIR ED O N PCB 295F LV IN 1) INST A LL C9 = 6800pF (10 kHz PRF LIM) +15V HIGH CURR -15V PCB 217A 2) R EPLAC E F1 WIT H BUSBAR JU MPER (5V DRIVE FOR PC B 272A) -
Page 39: Performance Check Sheet
PERFORMANCE CHECK SHEET...
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