P.O. BOX 265
OGDENSBURG, NY
U.S.A. 13669-0265
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
TEL: 888-670-8729 (USA & Canada) or +1-613-226-5772 (Intl)
FAX: 800-561-1970 (USA & Canada) or +1-613-226-2802 (Intl) [email protected] - http://www.avtechpulse.com/
X BOX 5120, LCD MERIVALE
OTTAWA, ONTARIO
CANADA K2C 3H4
INSTRUCTIONS
MODEL AVG-2A
0 to 120V, ≤ 1 ns
IMPULSE GENERATOR
SERIAL NUMBER: ____________
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. This warranty does not apply to units which have been dissembled, modified or subjected to conditions exceeding the applicable specifications or ratings. This warranty is the extent of the obligation assumed by Avtech with respect to this product and no other warranty or guarantee is either expressed or implied.
2
TECHNICAL SUPPORT
Phone: 888-670-8729 (USA & Canada) or +1-613-226-5772 (Intl)
Fax: 800-561-1970 (USA & Canada) or +1-613-226-2802 (Intl)
E-mail: [email protected]
World Wide Web: http://www.avtechpulse.com
3
TABLE OF CONTENTS
WARRANTY......................................................................................................................2
TECHNICAL SUPPORT...................................................................................................2
TABLE OF CONTENTS....................................................................................................3
INTRODUCTION...............................................................................................................4
AVAILABLE OPTIONS.....................................................................................................4
SPECIFICATIONS............................................................................................................5
EUROPEAN REGULATORY NOTES..............................................................................6
EC DECLARATION OF CONFORMITY.................................................................................. 6
DIRECTIVE 2002/95/EC (RoHS)............................................................................................. 6
DIRECTIVE 2002/96/EC (WEEE)............................................................................................ 6
BASIC TEST ARRANGEMENT........................................................................................8
CONTROLS - FRONT............................................................................................................. 8
CONTROLS - REAR................................................................................................................ 9
GENERAL OPERATING NOTES............................................................................................ 9
PERFORMANCE CHECK SHEET.................................................................................11
Manual Reference: Z:\officefiles\instructword\avg\AVG-2A,edition1.odt.
Last modified February 21, 2007.
Copyright © 2007 Avtech Electrosystems Ltd, All Rights Reserved.
INTRODUCTION
The AVG-2A is a high performance DC-powered module capable of generating up to
120V impulses into 50Ω loads at repetition rates up to 50 kHz. The pulse width is fixed at ≤ 1 ns.
Instruments with the "-P" model suffix can generate 0 to +120V, whereas instruments with the "-N" model suffix can generate 0 to -120V.
The AVG-2A must be triggered by an external TTL pulse (> 50 ns) applied to the “IN” connector.
The output is designed to drive 50Ω loads. (A 50Ω load is required for proper operation.) The output is AC-coupled.
This instrument is intended for use in research and development laboratories.
4
AVAILABLE OPTIONS
The AVG-2A is available with several options:
-EA Option: the output amplitude can be controlled by an externally generated 0 to
+10V analog control voltage.
-M Option: a monitor output is provided.
-OS Option: an externally generated DC offset can be added to the output.
5
SPECIFICATIONS
Model:
Amplitude
(50Ω load)
1 :
Pulse width:
(at 20% rise time)
Rise time:
Fall time:
PRF:
Polarity 2
Propagation delay:
Jitter:
:
DC offset:
Trigger required:
Monitor output:
AVG-2A
0 to 120 V
≤ 1 ns
≤ 0.4 ns
≤ 0.4 ns
0 to 50 kHz
Positive or negative
≤ 50 ns (Ext trig in to pulse out)
± 100 ps (Ext trig in to pulse out)
Optional 3 : Apply required DC offset (± 50 Volts, 250 mA max) to back-panel solder terminals
+5 Volts, 50 to 500 ns (TTL)
Optional 4 : Provides a 20 dB attenuated coincident replica of main output
Out: SMA, In: SMA, Power: Solder terminal
43 mm x 76 mm x 152 mm (1.7” x 3.0” x 6.0”)
Connectors:
Dimensions:
(H x W x D)
Power:
Chassis material:
Temperature range:
Mounting:
+15 Volts, 350 mA
Cast aluminum, blue enamel
Any, +5°C to +40°C
It is recommended that the module be bolted to a heatsink, for cooling.
1) For electronic control (0 to + 10 V) of amplitude, suffix the model number with -EA. Electronic control units also include standard front-panel one-turn controls.
2) Indicate desired polarity by suffixing model number with -P or -N (i.e. positive or negative). AVX-1 transformer may be used to invert polarity.
3) For DC offset option suffix model number with -OS.
4) For monitor option add suffix -M.
6
EUROPEAN REGULATORY NOTES
EC DECLARATION OF CONFORMITY
We Avtech Electrosystems Ltd.
P.O. Box 5120, LCD Merivale
Ottawa, Ontario
Canada K2C 3H4 declare that this pulse generator meets the intent of Directive 89/336/EEC for
Electromagnetic Compatibility. Compliance pertains to the following specifications as listed in the official Journal of the European Communities:
EN 50081-1 Emission
EN 50082-1 Immunity and that this pulse generator meets the intent of the Low Voltage Directive 72/23/EEC as amended by 93/68/EEC. Compliance pertains to the following specifications as listed in the official Journal of the European Communities:
EN 61010-1:2001 Safety requirements for electrical equipment for measurement, control, and laboratory use
DIRECTIVE 2002/95/EC (RoHS)
This instrument is exempt from Directive 2002/95/EC of the European Parliament and of the Council of 27 January 2003 on the Restriction of the use of certain Hazardous
Substances (RoHS) in electrical and electronic equipment. Specifically, Avtech instruments are considered "Monitoring and control instruments" (Category 9) as defined in Annex 1A of Directive 2002/96/EC. The Directive 2002/95/EC only applies to
Directive 2002/96/EC categories 1-7 and 10, as stated in the "Article 2 - Scope" section of Directive 2002/95/EC.
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
7
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.
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.
Requirements for WEEE compliance may include registration of products with local governments, reporting of recycling activities to local governments, and financing of recycling activities.
8
BASIC TEST ARRANGEMENT
SYNC OUTPUT
TTL-LEVEL
LOGIC
PULSER
MAIN OUTPUT
+3V to +5V (TTL)
PW > 50 ns
PRF ≤ 50 kHz
0V
AVTECH
PULSER
IN
CONNECTOR
SAMPLING
OSCILLOSCOPE
BW > 5 GHz
+15V DC
POWER
SUPPLY
OUT
CONNECTOR
60 dB
ATTENUATOR
ALL CABLES: 50 OHM COAXIAL
CONTROLS - FRONT
50 OHM INPUT
TRIG
The location of the IN and OUT connectors, and the amplitude control, are shown in the photo below.
The “AMP” control may be adjusted using a screwdriver. Instruments with the -EA option will have a solder terminal input to control the amplitude, instead of a screwdriver-adjustable control.
CONTROLS - REAR
The location of the power terminals are shown in the photo below.
9
The +15V input terminal is protected with a 1N4746A Zener diode, which will fail as a short if an excessive positive voltage (> 18V), or a negative voltage, is applied to the terminal.
GENERAL OPERATING NOTES
1) The bandwidth capability of components and instruments used to display the pulse generator output signal (attenuators, cables, connectors, etc.) should exceed 5
GHz.
2) The use of 60 dB attenuator on the output will ensure a peak input signal to the sampling scope of less than one volt.
3) In general, the source pulse generator trigger delay control should be set in the 0.1 to 1.0 us range, for proper positioning of the output pulse on the sampling oscilloscope display.
4) WARNING : The module may fail if triggered at a PRF greater than 50 kHz.
5) The output pulse amplitude is controlled by means of the one turn potentiometer
(AMP).
10
6) To DC offset the output pulse connect a DC power supply set to required DC offset value to the terminals marked “OS”. The maximum attainable DC offset voltage is
+50 volts. (Option).
7) The monitor output port (M) provides a coincident attenuated (÷10) replica of the main output to a 50 ohm load. (Option).
8) It is recommended that the module be bolted to a heatsink, for cooling purposes.
This will improve the stability of the output, by reducing thermal drift.
PERFORMANCE CHECK SHEET
11
