Quick Start Guide
HP 83480A Digital Communications
Analyzer
HP 54750A Digitizing Oscilloscope
© Copyright Hewlett-Packard
Company 1997
All Rights Reserved. Reproduction, adaptation, or translation without prior written
permission is prohibited,
except as allowed under copyright laws.
HP Part No. 83480-90021
Printed in USA
July 1997
Hewlett-Packard Company
Lightwave Operations
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.
Hewlett-Packard 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. HewlettPackard 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.
War ran ty.
This Hewlett-Packard instrument product is warranted
against defects in material and
workmanship for a period of
one year from date of shipment. During the warranty
period, Hewlett-Packard Company 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 Hewlett-Packard. Buyer shall prepay shipping charges to HewlettPackard and Hewlett-Packard
shall pay shipping charges to
return the product to Buyer.
However, Buyer shall pay all
shipping charges, duties, and
taxes for products returned to
Hewlett-Packard from another
country.
Hewlett-Packard warrants
that its software and firmware
designated by Hewlett-Packard for use with an instrument
will execute its programming
instructions when properly
installed on that instrument.
Hewlett-Packard does not
warrant that the operation of
the instrument, or software,
or firmware will be uninterrupted or error-free.
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.
Hewlett-Packard 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. HewlettPackard 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 NIN G
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.
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
HP 83480A, HP 54750A User’s Guide
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
HP 54750A Service Guide
HP 83480A, HP 54750A Programmer’s Guide
the
, while all programming information is contained in
, which shows you how to use the
HP 83480A,
.
iii
General Safety Considerations
General Safety Considerations
This product has been designed and tested in accordance with IEC Publication 1010, Safety Requirements for Electronic Measuring Apparatus, and has
been supplied in a safe condition. The instruction documentation contains
information and warnings which must be followed by the user to ensure safe
operation and to maintain the product in a safe condition.
WARNING
WARNING
WARNING
WARNING
CAUTION
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.
There are many points in the system which can, if contacted, cause
personal injury. Be extremely careful. Any adjustments or service
procedures that require operation of the system with protective
covers removed should be performed only by Hewlett-Packard
personnel.
NO OPERATOR SERVICEABLE PARTS INSIDE. Refer servicing to
qualified Hewlett-Packard personnel. To prevent electrical shock, do
not remove covers.
Before this instrument is switched on,
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.
make sure its primary power circuitry
CAUTION
Electrostatic discharge (ESD) on or near input connectors can damage circuits
inside the instrument. Repair of damage due to misuse is
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.
iv
not
covered under
Contents
1 Introducing the Instrument
The HP 83480A, HP 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 2-4
Exercise 1. Installing a Plug-in Module 2-5
Exercise 2. Turning On the Instrument 2-6
Exercise 3. Connecting a Signal 2-7
Exercise 4. Finding the Signal 2-8
Exercise 5. Modifying the Setup 2-9
Exercise 6. Making Measurements on the Signal 2-14
Exercise 7. Using the Help Menu 2-18
3 In Case of Difficulty
In Case of Difficulty 3-2
If the Mainframe Does Not Operate 3-4
If the Plug-in Does Not Operate 3-5
Contents-1
Contents
Contents-2
1
Introducing the Instrument
Introducing the Instrument
The HP 83480A, HP 54750A—At a Glance
The HP 83480A, HP 54750A—At a Glance
The HP 83480A-series digital communications analyzers or HP 54750A-series
digitizing oscilloscopes 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 (HP 83485A).
The HP 83480A-series digital communications analyzers 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 HP 54750A-series digitizing oscilloscope, or use the HP 83485A optical plug-in module, a firmware upgrade must
first be installed. Order the HP 83480K communications firmware kit and follow the installation instructions.
NOTE
The HP 83480A and HP 54750A mainframes do
use with the HP 54710A and HP 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 designed for
not
Introducing the Instrument
The HP 83480A, HP 54750A—At a Glance
What you’ll find in this chapter
A Quick Tour of the Front Panel 1-4
Entry devices 1-4
Disk drive 1-4
CAL signal 1-4
Hardkeys 1-5
Display 1-5
Softkeys 1-6
Certification
Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-Packard 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
Tim e
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.
Introducing the Instrument
A Quick Tour of the Front Panel
The highlighted choice is the selection that is currently active. In Figure 1-3,
triggered is highlighted, which indicates that the instrument is set to triggered
sweep.
Figure 1-3. Toggle softkey selection
Menu softkeys
A typical example of the menu softkeys is
External Scale...
(refer to Figure 1-3
on page 1-7). The ellipses after the word "scale" indicate that when you press
this softkey, a new softkey menu comes up on the display that allows you to
make several additional choices (refer to Figure 1-4). To exit this menu, simply press the
Done
softkey. The display returns to the previous menu.
1-7
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