Avtech AVRF-7A-B User manual

INSTRUCTIONS
MODEL AVRF-7A-B
0 TO 750 V, 5 ns RISE TIME
ULTRA-FAST PULSE GENERATOR
WITH IEEE 488. AND RS- 3 CONTROL
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 65
OGDENSBURG, NY
U.S.A. 13669-0 65
TEL: [phone] (USA & Canada) or [phone] (Intl)
FAX: [phone] (USA & Canada) or [phone] (Intl)
[e-mail] - http://www.avtechpulse.com/
X
BOX 51 0, LCD MERIVALE
OTTAWA, ONTARIO
CANADA K C 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

TABLE OF CONTENTS
WARRANTY......................................................................................................................2
TECHNICAL SUPPORT...................................................................................................2
TABLE OF CONTENTS....................................................................................................3
INTRODUCTION...............................................................................................................5
HIGH-VOLTAGE PRECAUTIONS....................................................................................6
SPECIFICATIONS............................................................................................................7
REGULATORY NOTES....................................................................................................8
FCC PART 18..........................................................................................................................8
EC DECLARATION OF CONFORMITY..................................................................................8
DIRECTIVE 2002/95/EC (RoHS).............................................................................................9
DIRECTIVE 2002/96/EC (WEEE)............................................................................................9
AC POWER S PPLY REG LATORY NOTES.....................................................................10
INSTALLATION..............................................................................................................11
VIS AL CHECK....................................................................................................................11
POWER RATINGS................................................................................................................11
CONNECTION TO THE POWER S PPLY...........................................................................11
PROTECTION FROM ELECTRIC SHOCK...........................................................................12
ENVIRONMENTAL CONDITIONS.........................................................................................13
LABVIEW DRIVERS..............................................................................................................13
FUSES.............................................................................................................................14
AC F SE REPLACEMENT...................................................................................................14
DC F SE REPLACEMENT...................................................................................................15
F SE RATINGS.................................................................................................................... 15
FRONT PANEL CONTROLS..........................................................................................16
REAR PANEL CONTROLS............................................................................................18
GENERAL INFOR ATION............................................................................................20
BASIC P LSE CONTROL....................................................................................................20
TRIGGER MODES................................................................................................................22
P LSE WIDTH MODES........................................................................................................22
GATING MODES...................................................................................................................22
AMPLIT DE CONTROL........................................................................................................23
LOAD IMPEDANCE...............................................................................................................23
PREVENTING O TP T STAGE FAIL RE...........................................................................23
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ALARMS................................................................................................................................ 24
OPERATIONAL CHECK.................................................................................................25
PROGRA ING YOUR PULSE GENERATOR...........................................................28
KEY PROGRAMMING COMMANDS....................................................................................28
ALL PROGRAMMING COMMANDS.....................................................................................29
ECHANICAL INFOR ATION......................................................................................31
TOP COVER REMOVAL.......................................................................................................31
RACK MO NTING................................................................................................................ 31
ELECTROMAGNETIC INTERFERENCE..............................................................................31
AINTENANCE..............................................................................................................32
REG LAR MAINTENANCE..................................................................................................32
CLEANING............................................................................................................................ 32
WIRING DIAGRA S.......................................................................................................33
WIRING OF AC POWER.......................................................................................................33
WIRING OF DC POWER.......................................................................................................34
PCB 158N - LOW VOLTAGE POWER S PPLY, 1/3............................................................35
PCB 158N - LOW VOLTAGE POWER S PPLY, 2/3............................................................36
PCB 158N - LOW VOLTAGE POWER S PPLY, 3/3............................................................37
PCB 94G - ALARM BOARD..................................................................................................38
PCB 157C - HIGH-VOLTAGE POWER S PPLY..................................................................39
PCB 168B - HIGH VOLTAGE DC POWER S PPLY............................................................40
PCB 183A-S AND 183A-P CAPACITOR BANKS.................................................................41
PCB 104E - KEYPAD / DISPLAY BOARD, 1/3.....................................................................42
PCB 104E - KEYPAD / DISPLAY BOARD, 2/3.....................................................................43
PCB 104E - KEYPAD / DISPLAY BOARD, 3/3.....................................................................44
MAIN WIRING (-P AND -PN NITS).....................................................................................45
MAIN WIRING (-N NITS).....................................................................................................46
PERFOR ANCE CHECK SHEET.................................................................................47
Manual Reference: /fileserver /officefiles/instructword/avrf/AVRF-7A-B,ed .odt.
Last modified October 19, 01 .
Copyright © 01 Avtech Electrosystems Ltd, All Rights Reserved.
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INTRODUCTION
The AVRF-7A-B is a high performance, GPIB and RS 3 -equipped instrument capable
of generating 0 to 750V at repetition rates up to 5 kHz into loads of 50Ω.
For positive amplitudes, the pulse width is variable from 150 ns to 10 us, and the rise
and fall times ( 0% - 80%) are 5 ns or less.
Units with the -N or -PN options can generate negative output amplitudes. For negative
amplitudes, the pulse width is variable from 150 ns to 5 us, and the rise and fall times
( 0% - 80%) are 8 ns or less.
The duty cycle may be as high as 0.1%.
A 50 Ohm load impedance is required. Open circuits, short circuits, and other non-
50Ω loads may damage the instrument.
The AVRF-7A-B includes an internal trigger source, but it can also be triggered or gated
by an external source. The output pulse width can be set to follow an input trigger pulse
width. A front-panel pushbutton can also be used to trigger the instrument.
The AVRF-7A-B features front panel keyboard and adjust knob control of the output
pulse parameters along with a four line by 40-character backlit LCD display of the
output amplitude, pulse width, pulse repetition frequency, and delay. The instrument
includes memory to store up to four complete instrument setups. The operator may use
the front panel or the computer interface to store a complete “snapshot” of all key
instrument settings, and recall this setup at a later time.
The instrument is protected against some overload conditions by an automatic control
circuit. An internal power supply monitor removes the power to the output stage for five
seconds if an average power overload exists. After that time, the unit operates normally
for one second, and if the overload condition persists, the power is cut again. This cycle
repeats until the overload is removed.
This instrument is intended for use in research, development, test and calibration
laboratories by qualified personnel.
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HIGH-VOLTAGE PRECAUTIONS
CA TION: This instrument provides output voltages as high as 750 Volts under
normal operating conditions, and generates up to 900V internally, so extreme caution
must be employed when using this instrument. The instrument should only be used by
individuals who are thoroughly skilled in high voltage laboratory techniques. The
following precautions should always be observed:
1. Keep exposed high-voltage wiring to an absolute minimum.
. Wherever possible, use shielded connectors and cabling.
3. Connect and disconnect loads and cables only when the instrument is turned off.
4. Keep in mind that all cables, connectors, oscilloscope probes, and loads must
have an appropriate voltage rating.
Do not attempt any repairs on the instrument, beyond the fuse replacement procedures
described in this manual. Contact Avtech technical support (see page for contact
information) if the instrument requires servicing.
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SPECIFICATIONS
Model: AVRF-7A-B1
Amplitude : 0 to 750 Volts (50 Ohm load required)
Rise & fall times ( 0%-80%): ≤ 5 ns for positive outputs,
≤ 8 ns for negative outputs
Pulse width (FWHM): 0.15 to 10 us for positive outputs,
0.15 to 5 us for negative outputs
PRF: 0 to 5 kHz
Duty cycle (max): 0.1%
Average power out (max): 11 Watts
Polarity: Positive (-P option), negative (-N option), or both (-PN option)
Propagation delay: ≤ 150 ns (Ext trig in to pulse out)
Jitter: ± 100 ps ± 0.03% of sync delay (Ext trig in to pulse out)
Trigger required:
(external trigger mode)
Mode A: + 5 Volts, 50 ns or wider (TTL)
Mode B: + 5 Volts, PWIN = PWOUT (TTL)
Sync delay: Variable, 0 to ± 1 second
Sync output: +3 Volts, 100 ns, will drive 50 Ohm loads
Gate input: Synchronous or asynchronous, active high or low, switchable.
Suppresses triggering when active.
Connectors: Out: BNC3
Trig, Sync, Gate: BNC
GPIB and RS- 3 control1: Standard on -B units.
Telnet / Ethernet control: Optional (-TNT option).
See http://www.avtechpulse.com/options/tnt for details.
Power requirements: 100 - 40 Volts, 50 - 60 Hz
Dimensions: (H x W x D) 100 mm x 430 mm x 475 mm (3.9” x 17” x 18.8”)
Rack-mount kit: Optional. Add -R5 to the model number.
Temperature range: +5°C to +40°C
1) -B suffix indicates IEEE-488. GPIB and RS- 3 control of amplitude, pulse width, PRF and delay. (See http://www.avtechpulse.com/gpib).
) For operation at amplitudes of less than 0% of full-scale, best results will be obtained by setting the amplitude near full-scale and using external attenuators on the output.
3) Add the suffix -NC, -HN, -MHV, or -SHV to the model number to replace the standard BNC output connector with N, HN, MHV, or SHV connectors, respectively.
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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 51 0, LCD Merivale
Ottawa, Ontario
Canada K C 3H4
declare that this pulse generator meets the intent of Directive 004/108/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 5008 -1 Immunity
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and that this pulse generator meets the intent of the Low Voltage Directive 7 / 3/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: 001 Safety requirements for electrical equipment for
measurement, control, and laboratory use
DIRECTIVE 00 /95/EC (RoHS)
This instrument is exempt from Directive 00 /95/EC of the European Parliament and
of the Council of 7 January 003 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 00 /96/EC. The Directive 00 /95/EC only applies to
Directive 00 /96/EC categories 1-7 and 10, as stated in the "Article - Scope" section
of Directive 00 /95/EC.
DIRECTIVE 00 /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 00 /96/EC of the European Union and
local laws) on behalf of the customer, as provided for under Article 9 of Directive
00 /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 + 4V 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 C . No. 60950- 1
EN60950 -1
and is compliant with:
EN61000-3-
EN61000-4- Level
EN61000-4- Level 3 (Air Only)
EN61000-4-4 Level 3
EN61000-4-5 Level 3
EN61000-4-11
CISPR 11 and FCC Part 15 Class B (conducted)
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