Racal Instruments 5601 User manual

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USER MANUAL
MODEL 5601
PXI SINGLE CHANNEL
WIDEBAND AMPLIFIER
PUBLICATION NO. 980895
RACAL INSTRUMENTS
United States
(Corporate Headquarters and Service Center)
4 Goodyear Street, Irvine, CA 92618
Tel: [phone]; Fax: [phone]
5730 Northwest Parkway Suite 700, San Antonio, TX 78249
Tel: [phone]; Fax: [phone]
Europe
(European Headquarters and Service Center)
18 Avenue Dutartre, 78150 LeChesnay, France
Tel: [phone]; Fax: [phone]
29-31 Cobham Road, Wimborne, Dorset BH21 7PF, United Kingdom
Tel: [phone]; Fax: [phone]
Via Milazzo 25, 20092 Cinisello B, Milan, Italy
Tel: [phone]; Fax: [phone]
Technologie Park, Friedrich Ebert Strasse, 51429 Bergisch Gladbach, Germany
Tel: [phone]; Fax: [phone]
[e-mail]
[e-mail]
[e-mail]
http://www.racalinstruments.com/
PUBLICATION DATE: December 22, 2003
Copyright 2003 by Racal Instruments, Inc. Printed in the United States of America. All rights reserved.
This book or parts thereof may not be reproduced in any form without written permission of the publisher.
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5601 User’s Manual
Racal Instruments Ó2003
THANK YOU FOR PURCHASING THIS RACAL INSTRUMENTS PRODUCT.
For this product, or any other Racal Instruments product that incorporates software drivers, you may access
our web site to verify and/or download the latest driver versions. The web address for driver downloads is:
http://www.racalinstruments.com/downloads
If you have any questions about software driver downloads or our privacy policy, please contact us at
[email protected].
WARRANTY STATEMENT
All Racal Instruments, Inc. products are designed and manufactured to exacting standards and in
full conformance to Racal’s ISO 9001 procedures.
This warranty does not apply to defects resulting from any modification(s) of any product or part
without Racal’s express written consent, or misuse of any product or part. The warranty also does
not apply to fuses, software, non-rechargeable batteries, damage from battery leakage, or
problems arising from normal wear, such as mechanical relay life, or failure to follow instructions.
This warranty is in lieu of all other warranties, expressed or implied, including any implied warranty
of merchantability or fitness for a particular use. The remedies provided herein are buyer’s sole and
exclusive remedies.
For the specific terms of your standard warranty, or optional extended warranty or service
agreement, contact your Racal customer service advisor. Please have the following information
available to facilitate service.
1. Product serial number
2. Product model number
3. Your company and contact information
You may contact your customer service advisor by:
E-Mail: [e-mail]
Telephone: [phone] (USA)
[phone] (UK)
[phone] (Hong Kong)
Fax: [phone] (USA)
[phone] (UK)
[phone] (Hong Kong)
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35601 User’s Manual
Racal Instruments Ó2003
RETURN of PRODUCT
Authorization is required from Racal Instruments before you send us your product for service or
calibration. Call your nearest Racal Instruments support facility. A list is located in the Product
Support section of this manual. If you are unsure where to call, contact Racal Instruments, Inc.
Customer Support Department in Irvine, California, USA at 1-800-722-3262 or 1-949-859-8999 or
via fax at 1-949-859-7139. We can be reached at:
[e-mail].
PROPRIETARY NOTICE
This document and the technical data herein disclosed, are proprietary to Racal Instruments, and
shall not, without express written permission of Racal Instruments, be used, in whole or in part to
solicit quotations from a competitive source or used for manufacture by anyone other than Racal
Instruments. The information herein has been developed at private expense, and may only be used
for operation and maintenance reference purposes or for purposes of engineering evaluation and
incorporation into technical specifications and other documents which specify procurement of
products from Racal Instruments.
DISCLAIMER
Buyer acknowledges and agrees that it is responsible for the operation of the goods purchased and
should ensure that they are used properly and in accordance with this handbook and any other
instructions provided by Seller. RII products are not specifically designed, manufactured or
intended to be used as parts, assemblies or components in planning, construction, maintenance or
operation of a nuclear facility, or in life support or safety critical applications in which the failure of
the RII product could create a situation where personal injury or death could occur. Should Buyer
purchase RII product for such unintended application, Buyer shall indemnify and hold RII, its
officers, employees, subsidiaries, affiliates and distributors harmless against all claims arising out
of a claim for personal injury or death associated with such unintended use.
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5601 User’s Manual
Racal Instruments Ó2003
FOR YOUR SAFETY
Before undertaking any troubleshooting, maintenance or exploratory procedure, read
carefully the WARNINGS and CAUTION notices.
This equipment contains voltage hazardous
to human life and safety, and is capable of
inflicting personal injury.
If this instrument is to be powered from the AC line (mains) through an
autotransformer, ensure the common connector is connected to the neutral
(earth pole) of the power supply.
Before operating the unit, ensure the conductor (green wire) is connected to
the ground (earth) conductor of the power outlet. Do not use a two-conductor
extension cord or a three-prong/two-prong adapter. This will defeat the
protective feature of the third conductor in the power cord.
Maintenance and calibration procedures sometimes call for operation of the
unit with power applied and protective covers removed. Read the procedures
and heed warnings to avoid “live” circuit points.
Before operating this instrument:
1. Ensure the proper fuse is in place for the power source to operate.
2. Ensure all other devices connected to or in proximity to this instrument are properly
grounded or connected to the protective third-wire earth ground.
If the instrument:
- fails to operate satisfactorily
- shows visible damage
- has been stored under unfavorable conditions
- has sustained stress
Do not operate until, performance is checked by qualified personnel.
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35601 User’s Manual
Racal Instruments Ó2003 i
Table of Contents
Chapter 1
OVERVIEW
What’s in This Chapter...................................................................................... 1-1
Introduction .... .................................................................................................. 1-2
Conventions Used in this Manual...................................................................... 1-3
5601 Series Feature highlights.......................................................................... 1-3
Functional Description....................................................................................... 1-4
Options... ....... .................................................................................................. 1-4
Specifications . .................................................................................................. 1-5
Front Panel Connectors .................................................................................... 1-5
Input ....... .................................................................................................. 1-5
Output .... .................................................................................................. 1-5
Grounding Considerations ................................................................................ 1-7
Operating Instructions ....................................................................................... 1-8
Chapter 2
INSTALLATION
Installation Overview ......................................................................................... 2-1
Unpacking and Initial Inspection ....................................................................... 2-1
Safety Precautions ............................................................................................ 2-1
Operating Environment ..................................................................................... 2-2
Power Requirements......................................................................................... 2-2
Grounding Requirements .................................................................................. 2-3
Floating the Input/Output Grounds.................................................................... 2-3
Calibration ...... .................................................................................................. 2-4
Abnormal Conditions......................................................................................... 2-5
Preparation for Use........................................................................................... 2-6
Removing the Instrument From the Bag ................................................... 2-6
Installation................................................................................................. 2-6
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5601 User’s Manual
ii Racal Instruments Ó2003
Chapter 3
PRODUCT SUPPORT
Product Support................................................................................................. 3-1
Reshipment Instructions .................................................................................... 3-1
Support Offices.................................................................................................. 3-2
Repair and Calibration Request Form ............................................................... 3-3
Appendix A
SPECIFICATIONS.............................................................................................A-1
List of Figures
Figure 2-1 Float Enable/Disable Jumper ...........................................................2-4
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35601 User’s Manual
Racal Instruments Ó2003 Overview 1-1
Chapter 1
OVERVIEW
What’s in this
Chapter
This chapter contains general and functional descriptions of the
Model 5601 PXI Wideband Amplifier. It also describes the front
panel connectors, operational modes, and all features of the
instrument.
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5601 User’s Manual
1-2 Overview Racal Instruments Ó2003
Introduction Model 5601 is a 3U single-slot, PXI-based power amplifier. The
amplifier is used for signal amplification purposes. Offering
unprecedented signal purity, Model 5601 amplifies signals from
DC to over 20 MHz. The unit has a fixed gain of 10. However,
one may order the same amplifier with custom gain without
jeopardizing signal purity or amplifier performance.
A common problem with PXI equipment is the inability to
produce high voltages, which results from low power supply
rails. For example, waveform generators, and similar signal
source devices, draw power from ±12V rails. Consequently,
they cannot produce signals above 16Vp-p. Model 5601 solves
this problem by using DC/DC converters to increase rail voltage
to ±24V. In turn, the increase of rail voltage, plus custom
components and unique design, permits amplification of input
signals to 40Vp-p into high impedance loads, or 20Vp-p into
50W. The power amplifier draws current only from the +5V rail,
leaving the other power supply rails free to supply their full
rated current to other devices.
Model 5601 is available with floating input and output
connectors. With this option, the amplifier can float from ground
level up to 250VDC. The only limiting factor is that both the
input and output grounds must connect to the same level. This
capability is important in applications where the amplifying
device must reside at the same ground level as its source. The
floating capability can be added or removed using a user-
accessible jumper connection.
The wideband amplifier occupies just one PXI slot. However, its
performance is unique and outstanding by any standards. With
40Vp-p and over 20MHz bandwidth, one can use Model 5601
in a wide range of applications.
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35601 User’s Manual
Racal Instruments Ó2003 Overview 1-3
Conventions
Used in this
Manual
The following conventions may appear in this manual:
NOTE
A Note contains information relating to the use of this product
CAUTION
A Caution contains information that should be followed to avoid personal
damage to the instrument or the equipment connected to it.
WARNING
A Warning alerts you to a potential hazard. Failure to adhere to the
statement in a WARNING message could result in personal injury.
The following symbol may appear on the product:
CAUTION:
Refer to Accompanying Documents
This refers you to additional information contained in this manual. The
corresponding information in the manual is similarly denoted.
5601 Series
Feature
Highlights
· Single-width PXI card
· Large-signal bandwidth to 20MHz
· Small-signal bandwidth to 50MHz
· Amplitude to 40Vp-p (high impedance)
· Low distortion
· Custom Configuration available for :
Gain
Input Impedance
Output Impedance
Output Polarity
Signal Ground
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5601 User’s Manual
1-4 Overview Racal Instruments Ó2003
Functional
Description
This section provides a detailed functional description of the
features, operation, and options for Model 5601. The wideband
amplifier may be ordered with different configurations such as
input/output impedance and gain. Read the following
description carefully and make sure your amplifier is configured
correctly for your application before you install and use this
card.
Options Model 5601 must be ordered from the factory alread
y
configured for your application. It is not user-configurable
except the grounding option (grounded/floating). Optional
configurations for Model 5601 include:
Input Impedance – determines the matching impedance at the
input connector. Two options are available: 50Wand 1MW.
Output Impedance – determines the output impedance
matching for the load impedance. Three options are available:
50W, 75W, and 600W.
Gain – specifies gain magnitude of the input signal. Factor
y
default setting is 10. However, any custom gain up to 100 can
be specified. Note that some characteristics of the output
section may change for gain settings above 10.
Output Polarity – specifies the phasing of the amplifier. Two
options are available: Normal and Inverted.
Circuit Ground – determines if the amplifier ground is floated
or tied to case ground. This is the only user-configurable option,
and may be changed by adding or removing a jumpe
r
connection.
All options must be specified at the time of purchase. Model
5601 is supplied fully configured. Only qualified personnel ma
y
do reconfiguration (other than grounding) of fielded cards.
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35601 User’s Manual
Racal Instruments Ó2003 Overview 1-5
Specifications Instrument specifications are listed in Appendix A. These
specifications are the performance standards or limits against
which the instrument is tested. Specifications apply only under
the following conditions:
1. Output terminated into matching impedance.
2. 30-minute minimum warm up.
3. Temperature range of 20°C to 30°C. Specifications outside
this range are degraded by 0.1% per °C.
Front Panel
Connectors
Model 5601 has two BNC connectors on its front panel,
designated as Input and Output.
Input The Input connector accepts signals within the range of DC to
over 20MHz and amplifies them by a fixed gain. Input
impedance is factory configured at 50Wor 1MW. 1MWinput
impedance can be used for low frequency signals (up to
100KHz). However, higher frequencies require a 50W
termination at the input of the amplifier to eliminate standing
waves and reflections in the input cable, which can cause
excessive ringing and aberrations at the output.
WARNING
The amplifier input cannot tolerate high
voltage if configured for 50Wimpedance.
Therefore, before connecting the cable to the
input connector, make sure your signal will
not exceed the input rating, as specified in
Appendix A.
Output Depending on the configuration, the amplifier may generate
inverted signals. Gain is fixed at 10 (or other gain facto
r
specified at time of purchase). Output source impedance is
configured as 50W, 75W, or 600W.
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5601 User’s Manual
1-6 Overview Racal Instruments Ó2003
Knowing the source impedance is very important because the
output gain is calibrated for a matched impedance. A
mismatched load impedance may affect output level accuracy.
For example, for a configured gain of 10, and properl
y
terminated signals at the input and output connectors (say 50W
each), an input of 2Vp-p will generate an output of 20Vp-p. On
the other hand, if the load impedance increases by a large
factor, the output amplitude increases due to the mismatched
load.
40Vp-p is the maximum amplitude level this amplifier can
produce into high impedance loads. 20Vp-p is the maximum fo
r
loads of 50W, 75W, or 600W
WARNING
Applying the output signal on inductive or
capacitive loads may damage the amplifier.
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35601 User’s Manual
Racal Instruments Ó2003 Overview 1-7
Grounding
Considerations
Understanding how to connect the ground path can be critical
to preserving the integrity of your output signal. If you are using
a single-ended output, it will probably be safe to connect the
circuit ground to case ground. However, in applications
requiring floated ground connection, it is imperative that the
amplifier ground be made floating as well. In this case, refer to
Chapter 2 and Figure 2-1 for instructions how to float the circuit
ground.
WARNING
Input and output grounds are tied together. Do
not connect the output ground to a level
different from input ground. Failure to adhere
to this limitation may damage the 5601 and the
surrounding equipment connected to its I/O
connectors.
NOTE
Normal amplifier operation is recommended
with circuit ground connected to case ground
(float disabled), thus minimizing susceptibility
to system noise. Enable the float configuration
only when the application requires it.
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5601 User’s Manual
1-8 Overview Racal Instruments Ó2003
Operating
Instructions
Being an analog device, Model 5601 has no controls or
computer-programmed settings. The following procedure is
recommended for proper operation of the power amplifier:
1. Make sure your card is configured for the desired input
and output impedance, gain, and grounding.
2. Follow the installation instructions given in Chapter 2 of
this manual.
3. Connect the output terminal to your load.
4. Connect the input terminal to your source.
5. Turn on power to your PXI system.
WARNING
Model 5601 has no programmable disconnect
for its signal output. Therefore, the amplifier
output is active immediately after you power
up your PXI chassis. Always make sure the
load is protected from inadvertent power-up
conditions before you turn on your PXI
chassis.
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35601 User’s Manual
Racal Instruments Ó2003 Installation 2-1
Chapter 2
INSTALLATION
Installation
Overview
This chapter contains information and instructions necessary for
initial inspection, grounding, repackaging for storage or
shipment, and installation.
Unpacking and
Initial
Inspection
Unpacking and handling requires normal precautions and
procedures applicable to handling of sensitive electronic
equipment. Contents of all shipping containers should be
checked for included accessories, and certified against the
packing slip to verify that the shipment is complete.
Safety
Precautions
The following safety precautions should be observed before
using this product and the associated computer. Although some
instruments and accessories are normally used with non-
hazardous voltages, there are situations where hazardous
conditions may be present.
This product is intended for use by qualified persons who
recognize shock hazards and are familiar with the safety
precautions required to avoid possible injury. The following
sections contain information and cautions that must be
observed to keep the 5601 operating correctly and safely.
CAUTION
For maximum safety, do not touch the product, test
cables, or any other instrument parts while power is
applied to the circuit under test. ALWAYS remove
power from the entire test system before
connecting cables or jumpers, or installing or
removing cards from the chassis. Do not touch any
object that could provide a current path to the
common side of the circuit under test or power line
(earth) ground. Always keep your hands dry while
handling the instrument.
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5601 User’s Manual
2-2 Installation Racal Instruments Ó2003
Operating
Environment
Model 5601 is intended for operation within a PXI chassis as a
plug-in module. Ensure that the PXI chassis being used to
host the 5601 fully conforms to the latest PXI specifications.
Model 5601 is intended for indoor use and should be operated
in a clean, dry environment with an ambient temperature within
the range of 0 °C to 40 °C.
WARNING
The 5601 must not be operated in explosive,
dusty, or wet atmospheres. Avoid installation
of the module close to strong magnetic fields.
The Model 5601 design has been verified to conform to the
EN61010-1 safety standard in accordance with the following
limits: Installation (Overvoltage) Category I (Measuring
Terminals) Pollution Degree 2.
Installation (Overvoltage) Category I refers to the signal level,
which applies to equipment measuring terminals that are
connected to source circuits in which measures are taken to
limit transient voltages to an appropriately low level.
Pollution Degree 2 refers to an operating environment where
only dry, non-conductive pollution normally occurs.
Occasionally, a temporary conductivity caused by
condensation must be expected.
Power
Requirements
Model 5601 operates within a PXI chassis, which provides DC
power to the instrument. Model 5601 requires a variety of DC
voltages as outlined in the Specifications section (Appendix
A). Ensure that the PXI chassis is capable of delivering the
required voltages and current.
CAUTION
Disconnect power to the PXI Chassis before
installing or removing Model 5601.
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35601 User’s Manual
Racal Instruments Ó2003 Installation 2-3
Grounding
Requirements
To conform to applicable safety and EMC requirements,
ensure that the 5601 instrument panel and the PXI chassis
are “earth” grounded.
CAUTION
The outer shells of the front panel terminals
(Input, Output) can float from case ground.
Refer to Figure 2-1 and the instructions in
this manual to disconnect/connect the circuit
ground from/to case ground.
Floating the
Input/Output
Grounds
The 5601 ground circuit is designed so it can float from case
ground. The only limitation is that the input and output
grounds must reside at the same ground potential.
Looking at the front panel, you will notice that the BNC
connectors are housed in plastic material, and are therefore
isolated from the metal front panel. The amplifier circuit is
also floated from the backplane power supply ground through
isolated DC/DC converters. Therefore, the amplifier ground
circuit may be configured to float from case ground in
applications requiring isolation from circuit to case grounds.
WARNING
Input and output grounds are tied together.
Do not connect input and output grounds to
different levels. Failure to adhere to this
limitation may damage the 5601 and
surrounding equipment connected to its I/O
connectors.
The 5601 may be ordered from the factory already configured
with the required ground setting. However, you may change
the grounding for different applications by means of a simple
jumper connection. Use the following procedure to
enable/disable the floating ground configuration.
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5601 User’s Manual
2-4 Installation Racal Instruments Ó2003
1. Locate LK2 near the bottom of the board, as shown in
Figure 2-1.
2. Remove the shorting jumper if you want to float the
input/output grounds from case ground.
3. Leave jumper LK2 in place if you want to connect
input/output ground to case ground.
NOTE
Normal amplifier operation is recommended
with circuit ground connected to case ground
(float disabled). This minimizes susceptibility
to system noise. Enable the floating-ground
configuration only for applications requiring a
floating ground.
Figure 2-1. Float Enable/Disable Jumper (LK2)
Calibration The recommended calibration interval is three years.
Calibration should be performed by qualified personnel only.
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35601 User’s Manual
Racal Instruments Ó2003 Installation 2-5
Operate the 5601 only as intended by the manufacturer. If
you suspect that the 5601 has been damaged, remove it from
the PXI Chassis and secure it from unintended operation.
Model 5601 protection is probably impaired if, for example,
the instrument fails to perform the intended operation or
shows visible damage.
Abnormal
Conditions
WARNING
Any use of Model 5601 in a manner not
specified by the manufacturer may impair the
protection provided by the instrument.
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