Agilent Technologies 83480A User Manual
Agilent 83480A Digital
Communications Analyzer
Agilent 54750A Digitizing
Oscilloscope
Quick Start Guide
© Copyright
Agilent Technologies 2000
All Rights Reserved. Reproduction, adaptation, or translation without prior written
permission is prohibited,
except as allowed under copyright laws.
Agilent Part No. 83480-90049
Printed in USA
June 2000
Agilent Technologies
Lightwave Division
1400 Fountaingrove Parkway
Santa Rosa, CA 95403-1799,
USA
(707) 577-1400
Notice.
The information contained in
this document is subject to
change without notice. Companies, names, and data used
in examples herein are fictitious unless otherwise noted.
Agilent Technologies makes
no warranty of any kind with
regard to this material, including but not limited to, the
implied warranties of merchantability and fitness for a
particular purpose. Agilent
Technologies shall not be liable for errors contained herein
or for incidental or consequential damages in connection with the furnishing,
performance, or use of this
material.
Restricted Rights Legend.
Use, duplication, or disclosure by the U.S. Government
is subject to restrictions as set
forth in subparagraph (c) (1)
(ii) of the Rights in Technical
Data and Computer Software
clause at DFARS 252.227-7013
for DOD agencies, and subparagraphs (c) (1) and (c) (2)
of the Commercial Computer
Software Restricted Rights
clause at FAR 52.227-19 for
other agencies.
Warranty.
This Agilent Technologies
instrument product is warranted against defects in
material and workmanship for
a period of one year from date
of shipment. During the warranty period, Agilent Technologies will, at its option, either
repair or replace products
which prove to be defective.
For warranty service or repair,
this product must be returned
to a service facility designated by Agilent Technologies. Buyer shall prepay
shipping charges to Agilent
Technologies and Agilent
Technologies shall pay shipping charges to return the
product to Buyer. However,
Buyer shall pay all shipping
charges, duties, and taxes for
products returned to Agilent
Technologies from another
country.
Agilent Technologies warrants that its software and
firmware designated by Agilent Technologies for use with
an instrument will execute its
programming instructions
when properly installed on
that instrument. Agilent Technologies does not warrant that
the operation of the instrument, or software, or firmware
will be uninterrupted or errorfree.
Limitation of Warranty.
The foregoing warranty shall
not apply to defects resulting
from improper or inadequate
maintenance by Buyer, Buyersupplied software or interfacing, unauthorized modification or misuse, operation
outside of the environmental
specifications for the product,
or improper site preparation
or maintenance.
No other warranty is
expressed or implied. Agilent
Technologies specifically disclaims the implied warranties
of merchantability and fitness
for a particular purpose.
Exclusive Remedies.
The remedies provided herein
are buyer's sole and exclusive
remedies. Agilent Technolo-
gies shall not be liable for any
direct, indirect, special, incidental, or consequential damages, whether based on
contract, tort, or any other
legal theory.
Safety Symbols.
CAUTION
The
caution
sign denotes a
hazard. It calls attention to a
procedure which, if not correctly performed or adhered
to, could result in damage to
or destruction of the product.
Do not proceed beyond a caution sign until the indicated
conditions are fully understood and met.
WAR NING
The
warning
sign denotes a
hazard. It calls attention to a
procedure which, if not correctly performed or adhered
to, could result in injury or
loss of life. Do not proceed
beyond a warning sign until
the indicated conditions are
fully understood and met.
The instruction manual symbol. The product is marked with this
warning symbol when
it is necessary for the
user to refer to the
instructions in the
manual.
The laser radiation
symbol. This warning
symbol is marked on
products which have a
laser output.
The AC symbol is used
to indicate the
required nature of the
line module input
power.
The ON symbols are
|
used to mark the positions of the instrument
power line switch.
The OFF symbols
❍
are used to mark the
positions of the instrument power line
switch.
The CE mark is a registered trademark of
the European Community.
The CSA mark is a registered trademark of
the Canadian Standards Association.
The C-Tick mark is a
registered trademark
of the Australian Spectrum Management
Agency.
This text denotes the
ISM1-A
instrument is an
Industrial Scientific
and Medical Group 1
Class A product.
Typographical Conventions.
The following conventions are
used in this book:
Key type
for keys or text
located on the keyboard or
instrument.
Softkey type
for key names that
are displayed on the instrument’s screen.
Display type
for words or
characters displayed on the
computer’s screen or instrument’s display.
User type
for words or charac-
ters that you type or enter.
Emphasis
type for words or
characters that emphasize
some point or that are used as
place holders for text that you
type.
ii
What You’ll Find in This Book
What You’ll Find in This Book
This book gives you a quick introduction to the instrument. It is not intended
as a comprehensive guide, but rather as a starting point to start using the
instrument quickly. This book is divided into three sections:
Chapter 1 provides a description of the instrument and a quick tour of
the front panel in a descriptive format, with examples that
help to illustrate the text.
Chapter 2 provides several tutorials that show how to get up and
running, how to scale a waveform vertically or horizontally,
and how to use the Help menu.
Chapter 3 provides a few simple hints in case you are experiencing
difficulty in either getting the mainframe or plug-in module
to perform properly.
To best meet your learning needs, you can use this book in one of two ways:
1
Read “A Quick Tour of the Front Panel” on page 1-4 before performing the
exercises.
2
Go straight to the exercises. This method is for users who prefer to learn how
to use the front panel by experimenting with the front-panel controls.
If you are already familiar with the information in this book, you can refer to
the
Agilent 83480A, Agilent 54750A User’s Guide
use the instrument to make many common measurements. It assumes you
have already learned how to use the front panel of the instrument, by first
reading this quick start guide.
All calibration and repair information is contained in the optional
Agilent 83480A, Agilent 54750A Service Guide
information is contained in the
mer’s Guide
.
Agilent 83480A, Agilent 54750A Program-
, which shows you how to
, while all programming
iii
General Safety Considerations
General Safety Considerations
This product has been designed and tested in accordance with IEC Publication 61010-1, Safety Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use, and has been supplied in a safe condition. The
instruction documentation contains information and warnings that must be
followed by the user to ensure safe operation and to maintain the product in a
safe condition.
WARNING
WARNING
WARNING
WARNING
WARNING
There are many points in the instrument which can, if contacted, cause
personal injury. Be extremely careful. Any adjustments or service
procedures that require operation of the instrument with protective
covers removed should be performed only by trained service
personnel.
If this instrument is not used as specified, the protection provided by
the equipment could be impaired. This instrument must be used in a
normal condition (in which all means for protection are intact) only.
To prevent electrical shock, disconnect the Agilent (Product variable)
from mains before cleaning. Use a dry cloth or one slightly dampened
with water to clean the external case parts. Do not attempt to clean
internally.
This is a Safety Class 1 product (provided with a protective earthing
ground incorporated in the power cord). The mains plug shall only be
inserted in a socket outlet provided with a protective earth contact.
Any interruption of the protective conductor inside or outside of the
product is likely to make the product dangerous. Intentional
interruption is prohibited.
No operator serviceable parts inside. Refer servicing to qualified
personnel. To prevent electrical shock, do not remove covers.
WARNING
For continued protection against fire hazard, replace line fuse only
with same type and ratings, (type T 0.315A/250V for 100/120V
operation and 0.16A/250V for 220/240V operation). The use of other
fuses or materials is prohibited. Verify that the value of the linevoltage fuse is correct.
iv
General Safety Considerations
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
Before this instrument is switched on,
make sure its primary power circuitry
has been adapted to the voltage of the ac power source. Failure to set the ac
power input to the correct voltage could cause damage to the instrument when
the ac power cable is plugged in.
This product is designed for use in Installation Category II and Pollution
Degree 2 per IEC 1010 and 664 respectively.
VENTILATION REQUIREMENTS: When installing the product in a cabinet, the
convection into and out of the product must not be restricted. The ambient
temperature (outside the cabinet) must be less than the maximum operating
temperature of the product by 4°C for every 100 watts dissipated in the
cabinet. If the total power dissipated in the cabinet is greater than 800 watts,
then forced convection must be used.
Always use the three-prong ac power cord supplied with this instrument.
Failure to ensure adequate earth grounding by not using this cord may cause
instrument damage.
connect ac power until you have verified the line voltage is correct.
Do not
Damage to the equipment could result.
This instrument has autoranging line voltage input. Be sure the supply voltage
is within the specified range.
CAUTION
Electrostatic discharge (ESD) on or near input connectors can damage circuits
inside the instrument. Repair of damage due to misuse is
covered under
not
warranty. Before connecting any cable to the electrical input, momentarily
short the center and outer conductors of the cable together. Personnel should
be properly grounded, and should touch the frame of the instrument before
touching any connector.
v
Contents
General Safety Considerations iiv
1 Introducing the Instrument
The Agilent 83480A, Agilent 54750A—At a Glance 1-2
A Quick Tour of the Front Panel 1-4
2 Operating the Instrument
Operating the Instrument 2-2
Equipment Used in These Exercises 2-3
Exercise 1. Installing a Plug-in Module 2-4
Exercise 2. Turning On the Instrument 2-5
Exercise 3. Connecting a Signal 2-6
Exercise 4. Finding the Signal 2-7
Exercise 5. Modifying the Setup 2-8
Exercise 6. Making Measurements on the Signal 2-13
Exercise 7. Using the Help Menu 2-17
3 In Case of Difficulty
In Case of Difficulty 3-2
If the Mainframe Does Not Operate 3-3
If the Plug-in Does Not Operate 3-4
Contents-1
1
Entry devices 1-4
Disk drive 1-4
CAL signal 1-4
Hardkeys 1-5
Display 1-5
Softkeys 1-6
Introducing the Instrument
Introducing the Instrument
The Agilent 83480A, Agilent 54750A—At a Glance
The Agilent 83480A, Agilent 54750A—At a
Glance
The Agilent 83480A-series digital communications analyzer or
Agilent 54750A-series digitizing oscilloscope are modular, high-performance
mainframes that contain digitizers, timebases, and display circuitry behind
vertical channel plug-in modules containing samplers, IF amplifiers, power
monitoring circuitry and O/E converter (Agilent 83485A).
The Agilent 83480A-series digital communications analyzer include these
unique capabilities:
• A full range of custom and standard telecom and datacom masks and templates with automated conformance and margin testing.
• Automated extinction-ratio and q-factor measurements.
• The ability to set the timebase display to bit period, select the appropriate
telecom bit rate, and enter the number of bits to be displayed.
If you wish to add these capabilities to an Agilent 54750A-series digitizing
oscilloscope, or use the Agilent 83485A optical plug-in module, a firmware
upgrade must first be installed. Order the Agilent 83480K communications
firmware kit and follow the installation instructions.
NOTE
The Agilent 83480A and Agilent 54750A mainframes do
designed for use with the Agilent 54710A and Agilent 54720A.
The instrument also has software modularity by having a 3-1/2 inch disk drive
and flash ROMs to allow for simple firmware upgrades of the firmware features.
The plug-in modules provide optical and electrical signal conditioning for the
A/D converters that are inside the mainframe.
1-2
accept plug-in modules
not
Introducing the Instrument
The Agilent 83480A, Agilent 54750A—At a Glance
Certification
Agilent Technologies certifies that this product met its published specifications at the time of shipment from the factory. Agilent Technologies further
certifies that its calibration measurements are traceable to the United States
National Institute of Standards and Technology, to the extent allowed by the
Institute’s calibration facility, and to the calibration facilities of other International Standards Organization members.
1-3
Introducing the Instrument
A Quick Tour of the Front Panel
A Quick Tour of the Front Panel
This section describes how to use the front panel. This information will help
you gain the full use of your instrument in the shortest possible time. This section divides the front panel into the following areas:
• Entry devices
• Disk drive
• CAL signal
• Hardkeys
•Display
•Softkeys
Entry devices
Disk drive
CAL signal
The entry devices include the knob, arrow keys, and keypad. The knob provides continuous control, while the arrow keys are step controls. The keypad
allows you to enter specific values.
The disk drive is a 3-1/2 inch, high-density, MS-DOS
®
compatible drive. You
can use the disk drive for loading applications, storing and loading waveforms,
storing and loading instrument setups, printing waveforms to a file, or loading
new system firmware.
MS-DOS
is a registered trademark of Microsoft Corporation.
The CAL signal is a dc voltage level used during the calibration routines. It is
internally generated and only activated during calibration routines. It can be
controlled by the user by pressing:
Utility
Calibrate
,
1-4
Introducing the Instrument
A Quick Tour of the Front Panel
Hardkeys
The two types of hardkeys are instant action and menu.
Clear display
and
Run
are examples of instant action keys because as soon as you press them, the
instrument changes operating states.
Time base
and
Trigger
are examples of
menu keys. Pressing them causes softkey menus to come up on the right side
of the display.
Display
Figure 1-1. The front panel of the instrument
Figure 1-2 shows the main areas of the display, and how you can interpret
some of the instrument’s settings from the display.
1-5
Introducing the Instrument
A Quick Tour of the Front Panel
Softkeys
Figure 1-2. The instrument display
The softkeys are to the right of the display, and instead of placing a label on
the softkey itself, the label is actually located on the display next to the softkey. These labels on the display are called menus, and the menu being displayed depends on which key has been pressed. For example, pressing
base
brings up the Time Base menu, while pressing
Trigger
brings up the Trigger
Time
menu.
There are five types of softkeys, and there are some differences on how each
type of softkey operates. The five types of softkeys are toggle, menu, continuous, list, and single choice. Because the Trigger menu contains all five types of
softkeys, it is used over the next few pages to demonstrate the differences
among the softkeys.
When you press the
Trigger
key, the Trigger softkey menu comes up on the
right side of the display as shown in Figure 1-3.
Toggle softkeys
A typical example of the toggle softkeys is
Sweep
. A toggle softkey allows you
to choose between two or more selections, and you change selections by
pressing that same softkey.
1-6
Sweep
has choices of either triggered or freerun.
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