Avtech AVMH-1A-C User manual

INSTRUCTIONS
MODEL AVMH-1A-C
10 VOLTS, 25 MHz
IMPULSE GENERATOR
WITH 130 – 250 ps PULSE WIDTH
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 9 7 5
P.O. BOX 265
OGDENSBURG, NY
U.S.A. 13669-0265
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...............................................................................................................5
AVAILABLE OPTIONS............................................................................................................ 5
SPECIFICATIONS.............................................................................................................6
REGULATORY NOTES.....................................................................................................7
FCC PART 18..........................................................................................................................7
EC DECLARATION OF CONFORMITY...................................................................................7
DIRECTIVE 2002/95/EC (RoHS).............................................................................................8
DIRECTIVE 2002/9 /EC (WEEE)............................................................................................8
AC POWER SUPPLY REGULATORY NOTES........................................................................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
AC FUSE REPLACEMENT...................................................................................................13
DC FUSE REPLACEMENT...................................................................................................14
FUSE RATINGS..................................................................................................................... 14
FRONT PANEL CONTROLS..........................................................................................15
REAR PANEL CONTROLS............................................................................................17
GENERAL INFORMATION.............................................................................................18
BASIC TEST ARRANGEMENT.............................................................................................18
BASIC PULSE CONTROL....................................................................................................18
AMPLITUDE INTERACTION.................................................................................................19
POLARITY INVERSION.........................................................................................................19
MINIMIZING WA EFORM DISTORTIONS.....................................................................20
USE 50Ω TRANSMISSION LINES AND LOADS...................................................................20
USE LOW-INDUCTANCE LOADS.........................................................................................20
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PRE ENTING DAMAGE................................................................................................20
OPTIONS.........................................................................................................................21
-OS OPTION.......................................................................................................................... 21
-M OPTION............................................................................................................................21
MECHANICAL INFORMATION......................................................................................22
TOP COVER REMOVAL.......................................................................................................22
ELECTROMAGNETIC INTERFERENCE..............................................................................22
MAINTENANCE..............................................................................................................23
REGULAR MAINTENANCE...................................................................................................23
CLEANING............................................................................................................................23
WIRING DIAGRAMS.......................................................................................................24
WIRING OF AC POWER....................................................................................................... 24
PCB 158P - LOW VOLTAGE POWER SUPPLY, 1/3.............................................................25
PCB 158P - LOW VOLTAGE POWER SUPPLY, 2/3.............................................................2
PCB 158P - LOW VOLTAGE POWER SUPPLY, 3/3.............................................................27
MAIN WIRING........................................................................................................................28
PERFORMANCE CHECK SHEET.................................................................................29
Manual Reference /fileserver2/officefiles/instructword/avmh/AVMH-1A-C,ed1.odt.
Last modified May 22, 2015.
Copyright © 2015 Avtech Electrosystems Ltd, All Rights Reserved.
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INTRODUCTION
The AVMH-1A-C is a high performance instrument capable of generating up to 10V into
50Ω loads at repetition rates up to 25 MHz. The output pulse width may be adjusted
from < 130 ps to > 250 ps.
Instruments with the "-P" model suffix can generate up to +10V, whereas instruments
with the "-N" model suffix can generate up to -10V.
Instruments with the "-P-PN" suffix generate up to +10V at the main output, and are
supplied with an inverting transformer that can be installed on the output to generate a
negative signal.
Instruments with the "-N-PN" suffix generate up to -10V at the main output, and are
supplied with an inverting transformer that can be installed on the output to generate a
positive signal.
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.
AVAILABLE OPTIONS
The AVMH-1A-C 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.
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SPECIFICATIONS
Model1AVMH-1A-C
Max.5 amplitude (50Ω load4) 10 V
Pulse width 130 - 250 ps
Pulse width measured at 50% (FWHM)
PRF, internal trigger
external trigger
1 kHz - 25 MHz
0 - 25 MHz
Polarity2Positive or negative or both (specify)
Propagation delay ≤ 40 ns (Ext trig in to pulse out)
Jitter ± 15 ps (Ext trig in to pulse out)
DC offset Optional3 Apply the required externally-generated DC offset to
back-panel solder terminals (+50 Volts, 250 mA max)
Trigger required
(ext trig mode) TTL-level (Low 0V, High +3V to +5V), ≥ 10 ns, RIN = 50Ω7.
Sync output +3 Volts, width varies with PRF (always > 10 ns), drives ≥ 50Ω
Sync delay Variable 0 to 80 ns, Sync out to pulse out
Monitor output Optional8. Provides a ÷11 (-21 dB) attenuated
coincident replica of the main output, into 50 Ohms.
Connectors Out, Monitor SMA, Trig BNC
Power requirement 100 - 240 Volts, 50 - 60 Hz
Dimensions H×W×D 100 x 215 x 375 mm (3.9” x 8.5” x 14.8”)
Chassis material Anodized aluminum, with gray plastic trim.
Temperature range +5°C to +40°C
1) -C suffix indicates stand-alone lab instrument with internal clock and line powering. (See http //www.avtechpulse.com/formats for additional details of the basic
instrument formats).
2) Indicate desired polarity by suffixing model number with -P or -N (i.e. positive or negative) or -P-PN or -N-PN for dual polarity option where the suffix preceding -PN
indicates the polarity at the mainframe output port.
3) For DC offset option add suffix -OS.
4) A 50 Ohm load is required. Other loads may damage the instrument. Consult Avtech ([email protected]) if you need to drive other load impedances.
5) For operation at amplitudes of less than 20% of full-scale, best results will be obtained by setting the amplitude near full-scale and using external attenuators on the
output.
6) Maximum amplitude falls by 10% for PRF above 20 MHz.
7) An input impedance of ≥1 kΩ can also be provided (-Z1K option).
8) For monitor option add the suffix -M to the model number.
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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 3H5
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 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
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.
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AC POWER SUPPLY REGULATORY NOTES
This instrument converts the AC input power to the +24V DC voltage that powers the
internal circuitry of this instrument using a Tamura AAD130SD-60-A switching power
supply. According to the manufacturer, the Tamura AAD130SD-60-A has the following
certifications
UL60950-1
IEC60950 -1
CSA C22.2 No. 60950- 1
EN60950 -1
and is compliant with
EN61000-3-2
EN61000-4-2 Level 2
EN61000-4-2 Level 3 (Air Only)
EN61000-4-4 Level 3
EN61000-4-5 Level 3
EN61000-4-11
CISPR 11 and 22 FCC Part 15 Class B (conducted)
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INSTALLATION
VISUAL CHECK
After unpacking the instrument mainframe and the transformer module, examine to
ensure that they have not been damaged in shipment. Visually inspect all connectors,
knobs, and handles. Confirm that a power cord and an instrumentation manual (this
manual), are with the instrument. If the instrument has been damaged, file a claim
immediately with the company that transported the instrument.
POWER RATINGS
This instrument is intended to operate from 100 - 240 V, 50 - 60 Hz.
The maximum power consumption is 57 Watts. Please see the “FUSES” section for
information about the appropriate AC and DC fuses.
This instrument is an “Installation Category II” instrument, intended for operation from a
normal single-phase supply.
CONNECTION TO THE POWER SUPPLY
An IEC-320 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. The other end of the detachable
power cord plugs into the local mains supply. Use only the cable supplied with the
instrument. The mains supply must be earthed, and the cord used to connect the
instrument to the mains supply must provide an earth connection. (The supplied cord
does this.)
Warning Failure to use a grounded outlet may result in injury or death due to
electric shock. This product uses a power cord with a ground connection. It must be
connected to a properly grounded outlet. The instrument chassis is connected to the
ground wire in the power cord.
The table below describes the power cord that is normally supplied with this instrument,
depending on the destination region
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