Avtech AVD series User manual

INSTRUCTIONS
MODEL AVD
20 VPP, 1 MHz, FIXED-TUNED
MONOCYCLE GENERATOR MODULE
SERIAL NUMBER: ____________
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 7 5
P.O. BOX 265
OGDENSBURG, NY
U.S.A. 1366 -0265
TEL: [phone] (USA & Canada) or [phone] (Intl)
FAX: [phone] (USA & Canada) or [phone] (Intl)
[e-mail] - http://www.avtechpulse.com/
X
BOX 5120, LCD MERIVALE
OTTAWA, ONTARIO
CANADA K2C 3H5

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.
TECHNICAL SUPPORT
Phone: [phone] (USA & Canada) or [phone] (International)
Fax: [phone] (USA & Canada) or [phone] (International)
E-mail: [e-mail]
World Wide Web: http://www.avtechpulse.com
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TABLE OF CONTENTS
WARRANTY......................................................................................................................2
TECHNICAL SUPPORT....................................................................................................2
TABLE OF CONTENTS....................................................................................................3
INTRODUCTION...............................................................................................................4
-F3 OPTION............................................................................................................................. 4
SPECIFICATIONS.............................................................................................................5
REGULATORY NOTES.....................................................................................................6
FCC PART 18..........................................................................................................................6
EC DECLARATION OF CONFORMITY...................................................................................6
DIRECTIVE 2002/95/EC (R HS).............................................................................................7
DIRECTIVE 2002/96/EC (WEEE)............................................................................................7
BASIC TEST ARRANGEMENT........................................................................................8
DC POWER SUPPLY..............................................................................................................8
GENERAL OPERATING NOTES.............................................................................................8
PERFORMANCE CHECK SHEET..................................................................................10
Manual Reference: /fileserver2/officefiles/instructword/avd/AVD module, ed4.odt.
Last modified April 16, 2014.
Copyright © 2014 Avtech Electrosystems Ltd, All Rights Reserved.
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INTRODUCTION
The AVD series of monocycle generators allows the generation of high-speed
monocycle waveforms, with peak-to-peak amplitudes of > 20 V into 50Ω loads. The
amplitude of the output waveform is not adjustable.
The monocycle center frequency is fixed. The center frequency is equal to XXXX MHz,
where the model number is AVD-XXXX.
See the online application note, "TB13 - How Is the Center Frequency of a Monocycle
Waveform Measured?" at http://www.avtechpulse.com/appnote/techbrief13/ for
information about center frequency measurements.
The AVD can operate at repetition rates of up to 1 MHz. The AVD 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, development, test and calibration
laboratories by qualified personnel.
-F3 OPTION
Units with the -F3 option can be triggered at repetition rates of up to 3 MHz, instead of
the standard 1 MHz limit.
The maximum output amplitude decreases to 15V, approximately, for operation above 1
MHz.
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SPECIFICATIONS
Model: AVD
Center frequency: 400-1500 MHz, fixed-tuned1
Amplitude: (into 50Ω) ≥ 20 VPP, at PRF up to 1 MHz (all units),
≥ 15 VPP, at PRF > 1 MHz (for -F3 units)
PRFmax: 1 MHz standard,
3 MHz with -F3 option2
Spurious signals: -20 dB, with respect to peak
Propagation delay: ≤ 50 ns
Jitter: ± 15 ps
DC offset option3: Apply required DC offset ( ± 50 V, 250 mA max) to back-panel terminals
Trigger required: + 5 Volt, 50 to 500 ns (TTL)
Connectors: In, Out: SMA.
Power: solder terminals.
Power requirement: +15 Volt, 200 mA
Dimensions:
(H x W x D)
43 x 66 x 107 mm
(1.7” x 2.6” x 4.3”)
Chassis material: cast aluminum,
blue enamel
Temperature range: +5°C to +40°C
1) Specify required frequency.
2) The maximum PRF for AVD units above 1000 MHz can be extended to 3 MHz. Add the suffix -F3 to the model number.
3) For DC offset option suffix model number with -OS. Avtech Model AVX-T bias tee can also be used to obtain DC offset.
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REGULATORY NOTES
FCC PART 18
This device complies with part 18 of the FCC rules for non-consumer industrial,
scientific and medical (ISM) equipment.
This instrument is enclosed in a rugged metal chassis and uses a filtered power entry
module (where applicable). The main output signal is provided on a shielded connector
that is intended to be used with shielded coaxial cabling and a shielded load. Under
these conditions, the interference potential of this instrument is low.
If interference is observed, check that appropriate well-shielded cabling is used on the
output connectors. Contact Avtech ([e-mail]) 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.
If any of the connectors on the instrument are unused, they should be covered with
shielded metal “dust caps” to reduce the interference potential.
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 ([e-mail]) if you require assistance.
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 2004/108/EG 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
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and that this pulse generator meets the intent of the Low Voltage Directive 72/23/EEC
as amended by 3/68/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/ 5/EC (RoHS)
This instrument is exempt from Directive 2002/ 5/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 ) as
defined in Annex 1A of Directive 2002/ 6/EC. The Directive 2002/ 5/EC only applies to
Directive 2002/ 6/EC categories 1-7 and 10, as stated in the "Article 2 - Scope" section
of Directive 2002/ 5/EC.
DIRECTIVE 2002/ 6/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/ 6/EC of the European Union and
local laws) on behalf of the customer, as provided for under Article of Directive
2002/ 6/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 ) 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.
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BASIC TEST ARRANGEMENT
DC POWER SUPPLY
The AVD must be connected to a stable +15V DC power supply (as well as a ground
connection).
The power supply input is protected from excessive voltages and incorrect polarities by
an externally-mounted (and replaceable) 1N4746A Zener diode. This diode may be
damaged by reversed polarities, or voltages exceeding 18V.
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 10
GHz.
2) The use of 40 dB attenuator on the output will ensure a peak input signal to the
sampling scope of much less than 1V.
3) 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
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AVTECH
PULSER
OUT
CONNECTOR
SAMPLING
OSCILLOSCOPE
BW > 10 GHz
50 OHM INPUT
IN
CONNECTOR
TTL-LEVEL
LOGIC
PULSER
TRIG
MAIN OUTPUT
SYNC OUTPUT
40 dB
ATTENUATOR
ALL CABLES: 50 OHM COAXIAL
+3V to +5V (TTL)
0V
PW > 50 ns
PRF ≤ 1 MHz
+15V DC
POWER
SUPPLY
50Ω FEED-THROUGH
TERMINATOR
(OPTIONAL, BUT
RECOMMENDED)

+50 Volts, subject to a maximum current rating of 250 mA. (Option).
4) WARNING: The module may fail if triggered at a PRF greater than 1 MHz (or 3
MHz for units with the -F3 option).

PERFORMANCE CHECK SHEET
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