Avtech AVR-D2-B Manual de usuario

INSTRUCTIONS

MODEL AVR-D2-B

MIL-PRF-19500 SWITCHING TIME TEST

PULSE GENERATOR

WITH IEEE 488.2 AND RS-232 CONTROL

SERIAL NUMBER 13913

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

http //www.avtechpulse.com/

Tel 888-670-8729 (USA & Canada) or +1-613-686-6675 (Intl)

Fax 800-561-1970 (USA & Canada) or +1-613-686-6679 (Intl)

BOX 5120, LCD MERIVALE

OTTAWA, CANADA K2C3H5

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 888-670-8729 (USA & Canada) or +1-613-686-6675 (International)

Fax 800-561-1970 (USA & Canada) or +1-613-686-6679 (International)

E-mail info@avtechpulse.com

World Wide Web http //www.avtechpulse.com

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 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

LABVIEW DRIVERS.............................................................................................................12

FUSES.............................................................................................................................13

AC FUSE REPLACEMENT...................................................................................................13

DC FUSE REPLACEMENT...................................................................................................14

FUSE RATINGS....................................................................................................................14

FRONT PANEL CONTROLS..........................................................................................15

REAR PANEL CONTROLS............................................................................................17

GENERAL INFORMATION............................................................................................19

BASIC PULSE CONTROL....................................................................................................19

TRIGGER MODES................................................................................................................21

GATING MODES...................................................................................................................22

BASIC TEST ARRANGEMENT......................................................................................23

TYPICAL TEST SETUPS......................................................................................................23

MINIMIZING WA EFORM DISTORTIONS....................................................................25

USE 50 OHM TRANSMISSION LINES.................................................................................25

USE LOW-INDUCTANCE LOADS........................................................................................25

OPERATIONAL CHECK.................................................................................................26

PROGRAMMING YOUR PULSE GENERATOR............................................................29

KEY PROGRAMMING COMMANDS....................................................................................29

ALL PROGRAMMING COMMANDS.....................................................................................29

OTHER INFORMATION.................................................................................................31

APPLICATION NOTES.........................................................................................................31

MANUAL FEEDBACK..........................................................................................................31

MECHANICAL INFORMATION......................................................................................32

TOP COVER REMOVAL.......................................................................................................32

RACK MOUNTING................................................................................................................ 32

ELECTROMAGNETIC INTERFERENCE..............................................................................32

MAINTENANCE..............................................................................................................33

REGULAR MAINTENANCE..................................................................................................33

CLEANING............................................................................................................................ 33

TRIGGER DAMAGE..............................................................................................................33

WIRING DIAGRAMS.......................................................................................................34

WIRING OF AC POWER.......................................................................................................34

WIRING OF HIGH-VOLTAGE DC POWER SUPPLIES........................................................35

PCB 158R4 - LOW VOLTAGE POWER SUPPLY................................................................36

PCB 235B - HIGH VOLTAGE DC POWER SUPPLY...........................................................37

PCB 151D - RANGE CONTROL...........................................................................................38

PCB 217A - RELAY DRIVER................................................................................................39

PCB 104F - KEYPAD / DISPLAY BOARD, 1/3....................................................................40

PCB 104F - KEYPAD / DISPLAY BOARD, 2/3....................................................................41

PCB 104F - KEYPAD / DISPLAY BOARD, 3/3....................................................................42

MAIN WIRING.......................................................................................................................43

PERFORMANCE CHECK SHEET..................................................................................44

Manual Reference /fileserver2/officefiles/instructword/avr-d2/AVR-D2-B,ed9.odt.

Last modified September 9, 2019.

INTRODUCTION

Model AVR-D2-B is specifically designed to perform MIL-PRF-19500 switching time

tests, but it is also useful as a high-speed medium-voltage general-purpose laboratory

pulse generator.

The main output (channel 1) provides a ±6 to ±30 Volt (±40 V for units with the -SOA

option) pulse. The pulse width is adjustable from 200 ns to 20 us. The 10%-90% rise

time is ≤ 1.5 ns (≤ 1.0 ns for units with the -TRF option), and the fall time is ≤ 2 ns.

A second output (channel 2) provides a ±2 Volt, 15 ns wide pulse, with 1.5 ns rise times

(10%-90%) and 2.5 ns fall times.

Both outputs require a 50Ω load. A variable DC offset of 0 to ± 15 Volts may be added

to the outputs.

Only one channel is active at a time. There is a single main output connector. Internal

relays connect the desired channel to the output connector.

The AVR-D2-B is a highly flexible instrument. Aside from the internal trigger source, it

can also be triggered or gated by external TTL-level signals. A front-panel pushbutton

or a computer command can also be used to trigger the instrument.

The AVR-D2-B features front panel keyboard and adjust knob control of the output

pulse parameters along with a four line by 40 character back-lit 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.

This instrument is intended for use in research, development, test and calibration

laboratories by qualified personnel.

AVAILABLE OPTIONS

-SOA Option This option increases the maximum channel amplitude from ±30 Volts to

±40 Volts.

-TRF Option This option decreases the specified rise time of the CH1 output from 1.5

ns to 1.0 ns (10%-90%).

The -SOA and -TRF options are mutually exclusive.

SPECIFICATIONS

Model AVR-D2-B1

Output CH A CH B

Amplitude (into 50 Ohms) 6 to 30 V, adjustable2. + or -, switchable 2 V, fixed. + or -, switchable

DC offset -15V to +15V, adjustable -1V to +1V, adjustable

Pulse width (FWHM) 200 ns to 20 us, adjustable 15 ns, fixed

Duty cycle 1% maximum N/A

Rise time of leading edge (10%-90%) ≤ 1.5 ns (≤ 1.0 ns optional3) ≤ 1.5 ns

Fall time of trailing edge (90%-10%) ≤ 2.0 ns ≤ 2.5 ns

Pulse repetition frequency (PRF) 5 Hz - 50 kHz

Source impedance 50 Ohms

Required load impedance 50 Ohms

GPIB and RS-232 control2Standard on -B units.

LabView Drivers Check http //www.avtechpulse.com/labview for availability and downloads

Ethernet port, for remote control using

VXI-11.3, ssh, telnet, & web

Included. Recommended as a modern alternative to GPIB / RS-232.

See http //www.avtechpulse.com/options/vxi for details.

Settings resolution The resolution of the timing parameters (pulse width, delay, period) varies,

but is always better than 0.15% of (|set value| + 20 ns).

The amplitude resolution is < 0.1% of the maximum amplitude.

Settings accuracy Typically ± 3% (±1 ns or ± 2% of max. amplitude) after 10 minute warmup. For high-accuracy

applications requiring traceable calibration, verify the output with a calibrated oscilloscope4.

Jitter ± 35 ps ± 0.015% of sync delay

Trigger modes Internal trigger, external trigger (TTL level pulse, > 50 ns, 1 kΩ input impedance),

front-panel “Single Pulse” pushbutton, or single pulse trigger via computer command.

Variable delay Sync to main out 0 to 1.0 seconds, for all trigger modes (including external trigger).

Sync output > +3 Volts, > 50 ns, will drive 50 Ohm loads

Monitor output Provides a 20 dB attenuated coincident replica of main output

Connectors BNC

Power required 100-240 Volts, 50-60 Hz

Dimensions, temperature range 100 x 430 x 375 mm (3.9 x 17 x 14.8”), +5°C to +40°C

1) -B suffix indicates IEEE-488.2 GPIB and RS-232 control of amplitude, pulse width, PRF and delay. (See http //www.avtechpulse.com/gpib).

2) The maximum amplitude may be increased from 30V to 40V by specifying the -SOA option.

3) Add the -TRF suffix to the model number to specify the ≤ 1.0 ns rise time option. Not available with the -SOA option.

4) These instruments are provided with a basic calibration checksheet, showing a selection of measured output parameters. These measurements are performed with

equipment that is calibrated on a regular basis by a third-party ISO/IEC 17025 2005 accredited calibration laboratory. However, Avtech itself does not claim any

accreditation. For applications requiring traceable performance, use a calibrated measurement system rather than relying on the accuracy of the pulse generator settings.

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 (info@avtechpulse.com) 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 (info@avtechpulse.com) 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

and that this pulse generator meets the intent of the Low Voltage Directive 2006/95/EC.

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 2011/65/EU (RoHS)

We Avtech Electrosystems Ltd.

P.O. Box 5120, LCD Merivale

Ottawa, Ontario

Canada K2C 3H5

declare that, to the best of our knowledge, all electrical and electronic equipment (EEE)

sold by the company are in compliance with Directive 2011/65/EU of the European

Parliament and of the Council of 8 June 2011 on the restriction of the use of certain

hazardous substances in electrical and electronic equipment (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.

Material/Substance Threshold level

Lead (Pb) < 1000 ppm (0.1% by mass)

Mercury (Hg) < 1000 ppm (0.1% by mass)

Hexavalent Chromium (Cr6+) < 1000 ppm (0.1% by mass)

Polybrominated Biphenyls (PBB) < 1000 ppm (0.1% by mass)

Polybrominated Diphenyl ethers (PBDE) < 1000 ppm (0.1% by mass)

Cadmium (Cd) < 100 ppm (0.01% by mass)

Bis(2-ethylhexyl) phthalate (DEHP) < 1000 ppm (0.1% by mass)

Butyl benzyl phthalate (BBP) < 1000 ppm (0.1% by mass)

Dibutyl phthalate (DBP) < 1000 ppm (0.1% by mass)

Diisobutyl phthalate (DIBP) < 1000 ppm (0.1% by mass)

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.

FIRMWARE LICENSING

Instruments with firmware versions 5.00 or higher use open-source software internally.

Some of this software requires that the source code be made available to the user as a

condition of its licensing. This source code is available upon request (contact

[email protected]m).

Earlier firmware versions do not contain any open source software.

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. 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 74 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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