S
Agilent 81110A 165/330 MHz
Agilent 81104A 80 MHz Pulse/Pattern Generators
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Quick Start Guide
Agilent 81110A 165/330 MHz,
Agilent 81104A 80 MHz
Pulse/Pattern Generators
Part No. 81110-91020
Printed in Germany April 2000
Edition 1.1, E0400
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Notice
Copyright
Agilent Technologies 1998, 2000
Herrenberger Str. 110140
71034 Boeblingen
Germany
All rights reserved. Reproduction, adaptation or translation without prior
written permission is prohibited, except as allowed under the copyright
laws.
Warranty
This Agilent product has a warranty against defects in material and
workmanship for a period of three years from date of shipment. During
the warranty period, Agilent Technologies will, at its option, either repair
or replace products that prove to be defective. For warranty service or
repair, this product must be returned to a service facility designated by
Agilent Technologies. The Buyer shall pay Agilents round-trip travel
expenses. For products returned to Agilent Technologies for warranty
service, the Buyer shall prepay shipping charges to Agilent and Agilent
shall pay shipping charges to return the product to the Buyer. However,
the 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 for use with an instrument will execute its programming
instructions when properly installed on that instrument. Agilent does not
warrant that the operation of the instrument software, or firmware, will
be uninterrupted or error free.
4
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Limitation of Warranty
The foregoing warranty shall not apply to defects resulting from
improper or inadequate maintenance by the Buyer, Buyer-supplied
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 supplied are the Buyers sole and exclusive remedies.
Agilent Technologies shall not be liable for any direct, indirect, special,
incidental, or consequential damages, whether based on contract, tort or
any other legal theory.
Assistance
Product maintenance agreements and other customer assistance
agreements are available for Agilent products. For any assistance,
contact your nearest Agilent Sales Office.
Certification
Agilent Technologies Company certifies that this product met its
published specifications at the time of shipment. Agilent further certifies
that its calibration measurements are traceable to the United States
Institute of Standards and Technology, to the extent allowed by the
Institute's calibrating facility, and to the calibration facilities of other
International Standards Organization members.
5
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About this Book
This quick start guide helps you to quickly get familiar with the features
and the user interface of the Agilent 81110A Pulse Generator.
The information is valid for Agilent 81104A and Agilent 81110A. Where
required the differences are explicitly mentioned. Possible
configurations are:
Output Modules for 81104A Mainframe
Module Description Max Quantity
81105A 10V/ max.80 MHz Output Channel 2
Output Modules for 81110A Mainframe
Module Description Max Quantity
81111A 10V/ max. 165 MHz Output Channel 2
81112A 3.8V/ max. 330 MHz Output Channel 2
As standard the instruments are equipped with one output channel.
Therefore, some of the described features will not be available on all
instruments.
6
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Chapter 1 Introducing the 81110A/81104A Pulse and Pattern
Generators on page 15 gives a general overview of the Agilent 81110A,
its features, the user interface, and the steps required for operating the
instrument.
Chapter 2 Getting Started on page 31 gives the setup information for
some real-world signal examples, which can easily be used by varying
only some parameter values.
Chapter 3 Using the 81110A/81104A on page 59 provides complete
information on the user interface screens.
Installation and maintenance are described in Appendix A Installation
& Maintenance on page 111.
For specifications and information on operating the instrument by means
of remote control, please refer to the Reference Guide, p/n 81110-91021.
Conventions Used in this Book
This book uses certain conventions to indicate elements of the
Agilent 81110As user interface. The following table shows some
examples:
Softkeys Press the MODE/TRG softkey to access the Mode/
Trigger screen.
Hardkeys Press the MORE key to switch to the alternative
softkey layout.
Alternate Keys Press SHIFT + 0 (ON/OFF1) to switch on output 1.
The alternate key labelwhich is selected by
pressing the SHIFT keyis given in parentheses.
Screen Quotes Move the entry focus down to P
turn the knob to select
INTERNAL
ULSE-PERIOD
PLL.
and
Entry Focus The highlight field, that can be moved with the
cursor keys, to change modes, parameters, or
parameter formats.
7
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Safety Information
Safety
This is a Safety Class 1 instrument (provided with terminal for protective
earthing). Before applying power, verify that the correct safety
precautions are taken (see the following warnings). In addition, note the
external markings on the instrument that are described under Safety
Symbols. Do not operate the instrument with its covers removed.
Replace fuse only with specified type.
Warning
Before turning on the instrument, you must connect the protective earth
terminal of the instrument to the protective earth conductor of the
(mains) power cord. The mains plug must only be inserted in a socket
outlet with a protective earth contact. Do not negate the protective
action by using an extension power cord without a protective grounding
conductor. Grounding one conductor of a two-conductor outlet is not
sufficient protection.
Service instructions are for trained service personnel. To avoid
dangerous electric shock, do not perform any service unless qualified to
do so. Do not attempt internal service or adjustment unless another
person, capable of rendering first aid and resuscitation, is present.
If you energize this instrument using an auto-transformer (for voltage
reduction), make sure that the common terminal is connected to the
earth terminal of the power source.
Whenever it is likely that the ground protection is impaired, you must
make the instrument inoperative and secure it against any unintended
operation.
Do not operate the instrument in the presence of flammable gases or
fumes. Operation of any electrical instrument in such an environment
constitutes a definite safety hazard.
Do not install substitute parts or perform any unauthorized modification
to the instrument.
8
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Capacitors inside the instrument may retain a charge even if the
instrument is disconnected from its source of supply.
Safety Symbols
Instruction Manual symbol: The instrument is marked with this symbol
when it is necessary for you to refer to the instruction manual in order to
protect against damage to the instrument.
Protected conductor symbol.
In the manuals:
WWWWAAAARRRRNNNNIIIINNNNGGGG
CCCCAAAAUUUUTTTTIIIIOOOONNNN Cautions call attention to a procedure, practice, or the like, which, if not
Warnings call attention to a procedure, practice, or the like,
which, if not correctly performed or adhered to, could result in
personal injury or loss of life. Do not proceed beyond a Warning
until the indicated conditions are fully understood and met.
correctly performed or adhered to, could result in damage to or
destruction of part or all of the equipment. Do not proceed beyond a
Caution until the indicated conditions are fully understood and met.
9
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10
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Notice ......................................................................................... 4
About this Book ......................................................................... 6
Output Modules for 81104A Mainframe ............................................... 6
Output Modules for 81110A Mainframe ............................................... 6
Safety Information .................................................................... 8
Chapter 1
Chapter 2
Introducing the 81110A/81104A Pulse and Pattern
Generators
What you can do with the 81110A/81104A ............................ 16
The Front Panel ....................................................................... 18
Operating the 81110A/81104A ................................................ 20
Switching On the Instrument .............................................................. 20
The Basic Screens ................................................................................. 21
Adjusting Parameters ........................................................................... 24
Switching the Outputs On and Off ...................................................... 27
Using the Special Function Keys ........................................................ 28
Help is Available ...................................................................... 29
The Rear Panel ........................................................................ 30
Getting Started
Setting Up a Clock Signal ....................................................... 32
Setting Up a Pulse Signal ........................................................ 37
Setting Up a Serial Data Stream Signal ................................. 41
Setting Up an Edge-Displacement Signal .............................. 45
xi
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Setting Up a Dual Clock Signals ............................................ 50
Setting Up a Burst Signal ....................................................... 55
Chapter 3
Using the 81110A/81104A
The Mode/Trigger Screen ....................................................... 60
Overview ................................................................................................. 60
Continuous Pulses Mode ...................................................................... 63
Continuous Burst Mode ........................................................................ 64
Continuous Pattern Mode .................................................................... 65
Triggered Pulses Mode ........................................................................ 66
Triggered Burst Mode ........................................................................... 68
Triggered Pattern Mode ........................................................................ 70
Gated Pulses Mode ................................................................................ 72
Gated Burst Mode ................................................................................. 74
Gated Pattern Mode .............................................................................. 75
External Width Mode ............................................................................ 76
The Timing Screen .................................................................. 77
The Levels Screen ................................................................... 83
The Pattern Screen ................................................................. 88
Hints on Editing Pattern Data .............................................................. 94
The Limits Screen ................................................................... 95
The Trigger-Level Screen ....................................................... 96
The Memory Card Screen ....................................................... 98
The Configuration Screen .................................................... 103
The Output Screens .............................................................. 106
xii
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Warnings and Errors ............................................................. 107
Warning and Error Reporting Example ........................................... 108
Appendix A
Installation & Maintenance
Initial Inspection ................................................................... 112
Standard Deliverables ........................................................................ 113
Options and Accessories: ................................................................... 114
Power Requirements ............................................................. 116
Power Cable ........................................................................... 118
Ventilation Requirements ..................................................... 119
Thermal Protection ............................................................................. 119
Battery ................................................................................... 120
Battery Replacement .......................................................................... 121
Operating Environment ........................................................ 122
Cleaning Recommendation ................................................... 123
Acoustic Noise Emission ....................................................... 124
xiii
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xiv
1Introducing the
81110A/81104A Pulse and
1
Pattern Generators
The purpose of the introduction chapter is to give a general overview of
the 81110A/81104A.
The main features and use models are described in What you can do
with the 81110A/81104A on page 16.
Operating the instrument via the front panel user interface is described in
The Front Panel on page 18 and Operating the 81110A/81104A on
page 20.
Help is Available on page 29 shortly introduces the 81110A/81104As
on-line help system.
Finally, The Rear Panel on page 30 takes a look at the back of the
81110A/81104A.
15
Introducing the 81110A/81104A Pulse and Pattern Generators
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What you can do with the 81110A/81104A
This section introduces the basic features and use models of the
81110A/81104A Pulse and Pattern Generators.
Basic Features
The Pulse and Pattern Generators generate all standard pulses, digital
patterns and multi-level waveforms needed to test all current logic
technologies (such as TTL, CMOS, ECL, PECL, LVDS, GTL) and other
digital designs up to 330 MHz.
The instruments provide a reliable and wide range of signals, which can
be used in even more applications than its predecessor, the
Agilent 8110A. This is due to enhancements made in the feature set and
specifications of the Agilent 8110A. The glitch and drop out free varying
of any timing parameter and the timing calibration feature of the Agilent
81110A/81104A contribute to more accurate and confident
characterizations of the DUTs.
Benchtop Testing
The 81110A/81104A feature a graphic display showing all pulse
parameters at a glance. The cursor keys and the modify knob allow fast
and simple operation.
The user interface is designed to minimize the time invested in getting
familiar with the instrument. After familiarization, the instrument
supports quick setups of signals. This leaves you free to concentrate on
the measurement task and testing of the DUT.
16
Introducing the 81110A/81104A Pulse and Pattern Generators
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Automated Testing
The 81110A/81104A has the same SCPI conform command structure for
the feature sets identical to the Agilent 8110A. As with the Agilent 8110A,
the new product can be easily integrated into all phases of test system
development such as planning rack integration and test program
generation. These benefits along with the low cost of ownership make
the 81110A/81104A an invaluable instrument in a wide range of technical
applications. Programs designed for the Agilent 81104A can be used
without any changes for the Agilent 81110A with Agilent 81111A
10V/165 MHz outputs.
NNNNOOOOTE
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TETE
number 81110-91021.
The Agilent 81110A compared to the Agilent 81104A has better accuracy,
up to 330 MHz clock rate, 800 ps typical edges at up to 3.8 V, and a timing
auto calibration.
Upgrade Capability
81110AAAA////81104
8111081110
81104AAAA
8110481104
It is possible to upgrade the instruments with a second channel if only
one channel was originally ordered. There are two output channels
available for the Agilent 81110A. The second channel that is installed
must be the same as channel one.
NNNNOOOOTE
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TETE
Mainframe Module Description
Agilent 81104A Agilent 81105A 10V/ max. 80 MHz Output
Channel
Agilent 81110A Agilent 81111A
Agilent 81112A
10V/ max. 165 MHz Output
Channel
3.8V/ max. 330 MHz Output
Channel
17
Introducing the 81110A/81104A Pulse and Pattern Generators
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The Front Panel
When used for benchtop testing, the instrument is mainly operated from
the front panel.
Special Function
Keys
Front Panel
Switch
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TETE
Softkeys
front panel switch
The
The instrument is disconnected from the AC line power only by
disconnecting the power cord.
The four keys below the display are the
keys). The current function of each softkey is indicated in the
corresponding box on the display.
Pressing the MORE key changes the softkey layout.
The other keys (
and the
operating the instrument (see Operating the 81110A/81104A on
page 20).
MORE Key
special function keys, data entry keys, cursor keys
rotary knob
is used to switch on and off the instrument.
are used to select and modify parameters when
Data Entry
Keys
Inputs and Outputs
softkeys
Cursor
Keys
(software-controlled
Rotary
Knob
)
18
Introducing the 81110A/81104A Pulse and Pattern Generators
The major inputs and outputs of the instrument are available at the front
panel:
The external input (EXT INPUT) can be used to connect an external
arming source (started or gated modes). For details, please refer to
The Mode/Trigger Screen on page 60.
The trigger signal (TRIGGER OUT) marks the start of the pulse
period or of parts of a pattern (see The Mode/Trigger Screen on
page 60). You can set the output levels according to the used
technology (TTL, ECL, PECL) or enter test-specific values (see The
Trigger-Level Screen on page 96).
The strobe signal (STROBE OUT) marks beginning and end of a burst
in Burst mode. In Pattern mode, this signal is programmable per bit.
The OUTPUT connectors provide the signal output (normal and
inverted), the indicators show the current state of the output (on or
off).
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TETE
Memory Card Screen on page 98.
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19
Introducing the 81110A/81104A Pulse and Pattern Generators
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Operating the 81110A/81104A
This section guides you through the first steps when operating the
81110A/81104A via the user interface.
NNNNOOOOTE
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TETE
please refer to the Reference Guide, part number 81110-91021.
Switching On the Instrument
After switching on the instrument the display indicates that the
instrument selftest is running. This can take several seconds to complete.
If the selftest fails, you see a flashing E at the bottom of the screen. Press
the HELP key to see a list of the selftest error messages. Use the knob or
the cursor keys to scroll through the list if necessary.
To return to normal operation press HELP again. Note that the selftest
error messages are removed from the error queue after this.
20
Introducing the 81110A/81104A Pulse and Pattern Generators
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The Basic Screens
The major parameters for pulse generation can be set up in 3 screens.
For setting up patterns there are two more basic screens.
Press the
MODE/TRG softkey
to access this
screen.
The
Mode/Trigger screen
allows you to set the fundamental operating
and trigger modes with respect to the signal required.
In this screen, you can set up the signal to be gated, started or
continuous, and to be a pulse stream, a burst (several pulses followed by
a pause) or a pattern.
In the lower section you can specify the trigger source and control the
trigger output (in started and in gated mode).
21
Introducing the 81110A/81104A Pulse and Pattern Generators
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Timing Screen
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8110481104
The Timing screen and the Levels screen allow you to specify timing
and level parameters for the signals to be generated.
Levels Screen
Press the TIMING
LEVELS softkey
OR
to access these
screens.
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TETE
In the Timing screen you can set up the clock frequency and, for output 1
and 2, the timing for the signals (delay, pulse width, duty cycle, ...).
The Levels screen allows you to specify the level parameters for the
signals to be generated. You can select between preset values of different
technologies and/or adjust values according to individual requirements.
Set the values in terms of high/low level or offset/amplitude. If the
81110A/81104A is equipped with two output modules, the channels can
be set as separate outputs or to be digitally added.
The Configuration Screen on page 103).
Pressing SHIFT + MORE (GRAPH) when the Timing or the Levels screen is
displayed, toggles between the textual display and a graphical
representation of the parameters.
1
OFF
OFF
2
OFF
OFF
TIMING PATTERNLEVELSMODE/TRG
Width
100.0
ns
22
Introducing the 81110A/81104A Pulse and Pattern Generators
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In both screens, you can switch on and off the outputs. Their status (ON
or OFF) is indicated on screen and by an LED next to the output
connector.
The Pattern screen allows you to compose a data stream composed of
RZ or NRZ signals.
You can set up the length of the pattern and edit the pattern data for each
address within the pattern. Additionally, the strobe output can be
programmed for each address, providing a comfortable trigger output in
pattern mode.
You can enter data by using block editing functions, and you can enter
the data bit by bit.
81104AAAA
8110481104
Memory location
currently selected
Bit-Editing window
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TETE
comfortably as a burst signal.
Pattern length
23
Introducing the 81110A/81104A Pulse and Pattern Generators
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Adjusting Parameters
Adjusting parameters within a screen, requires two steps:
selecting the parameter
adjusting its value
Some parameters allow different formats of their values. For example,
the pulse width can be displayed and entered as an absolute value, as
duty cycle (percentage of the period), or as the delay of the trailing edge.
The following sections show the standard procedure for adjusting
parameters, and list some features useful for the advanced user.
Standard Procedure
To experience the standard procedure for adjusting parameters, consider
the following example where the duty cycle is set to 50%.
Press the TIMING softkey to access the Timing screen.
1
Use the cursor keys to select the W
2
Selection Modify/Enter Area
OFF Per 1.000 µs OFF
1
OFF OFF
Delay
Width
0ps
100.0ns
Delay 0ps
Width
parameter.
IDTH
2
100.0ns
MODIFY
*Width
DutyCycle
TrailDel
TIMING PATTERNLEVELSMODE/TRG
The available formats for the pulse width parameter are displayed in
the Modify/Enter area.
24
Introducing the 81110A/81104A Pulse and Pattern Generators
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81110AAAA////81104
8111081110
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8110481104
When changing the
parameter format,
the instrument
automatically
recalculates the
value.
3 Turn the knob to select D
The selected setting is indicated by an *.
4 Move the cursor to the right to select the duty cycle value.
5 Use the data entry keys or the knob to enter the required value: 50.
6 Press the ENTER key to confirm your selection.
UTYCYCLE
.
ON Per 1.000µs OFF
1
OFF OFF
Delay
DtyCyc
0ps
50.0%
Delay 0ps
Width 100.0ns
2
MODIFY
50.0
%
TIMING PATTERNLEVELSMODE/TRG
If you need to specify a unit for a parameter, simply press the appropriate
unit key (
With this small example, you have learned the basic steps required for
adjusting parameters. For a complete reference of parameters and
formats available in the individual screens, refer to Chapter 3 Using the
81110A/81104A on page 59.
NANO, MICRO/MEGA, MILLI/KILO) instead of the
ENTER
key.
25
Introducing the 81110A/81104A Pulse and Pattern Generators
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8111081110
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Advanced Procedures
The following features can be used to make operation more comfortable.
Selecting parameters
SHIFT
Most keys of the front panel have an additional function. The SHIFT
key provides fast access to the additional functions of the data entry
keys and the special function keys.
For example, it is possible to quickly access the pulse width
parameter by pressing SHIFT + 6 (WIDTH). The entry focus will be
positioned on the corresponding editing field.
Changing the step size
SHIFT
SHIFT
NNNNOOOOTE
TE Proper operation of the instrument outside of the specified ranges is not
TETE
When modifying a value in the Modify/Enter area, pressing the SHIFT
key followed by cursor left/right moves the cursor to a different digit
in the displayed number.
Thus, you can change the step size for parameter change before you
vary the value either with the up/down cursor keys or the knob.
Overprogramming
Pressing the SHIFT key while turning the knob, it is possible to exceed
specified parameter ranges to utilize the instrument to its limits.
guaranteed. It is recommended to have the output switched on when
overprogramming to have the internal error check system activated. This
error check system warns you about impossible settings.
26
Introducing the 81110A/81104A Pulse and Pattern Generators
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81110AAAA////81104
8111081110
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Switching the Outputs On and Off
When you switch the instrument on, the outputs and inverted outputs are
switched off to protect the device under test. The LED indicator next to
the connector indicates the output state.
ON/OFF1
0
For example, to switch output 1 on or off
either press SHIFT + 0 (ON/OFF1),
or move the cursor to the ON/OFF parameter in the Timing or Levels
screen and select the appropriate value by turning the knob.
To switch on or off output 2 and/or the inverted outputs, proceed in the
same way. You can use the following short cuts:
Short Cut Output
SHIFT + 0 (ON/OFF1) Normal Out 1
SHIFT + . (decimal point) (ON/OFF1
SHIFT + +/- (ON/OFF2) Normal Out 2
SHIFT + ENTER (ON/OFF2
) Inverted Out 2
) Inverted Out 1
27
Introducing the 81110A/81104A Pulse and Pattern Generators
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8111081110
81104AAAA
8110481104
Using the Special Function Keys
The instrument provides the following special function keys:
The MAN key can be used to run and to stop the instrument, and, in
MAN
RECALL
STORE
SHIFT
LOCAL
HELP
triggered or gated mode, to manually arm and/or trigger the
instrument if there is no other source available (see The
Mode/Trigger Screen on page 60).
The STORE key can be used to store/recall to/from 1 to 9 individual
settings in the instrument memory.
In the internal memory location 0 there is a default setting stored.
Pressing SHIFT + STORE (RECALL) and selecting 0 resets the instrument to
the default setting.
The SHIFT key provides fast access to additional functions.
When the front panel controls are locked in remote control, pressing
the SHIFT key unlocks the front panel controls.
The HELP key provides access to the instruments on-line help or in
warning or error state, access to Warning/Error Report screen.
Pressing SHIFT + HELP (AUTOSET) sets the instrument to a valid
setting based on the current period setting.
28
Introducing the 81110A/81104A Pulse and Pattern Generators
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Help is Available
Whenever you are in doubt or the instrument signals warnings or errors,
press the HELP key.
HHHHeeeellllpppp If there are no warnings or errors pending, pressing the HELP key
displays information on the currently selected parameter, the parameter
help. More information is available within the help system:
Parameter Help
The help information gives a short description of the parameter or
setting options and the corresponding SCPI command(s) syntax for
programming the parameter or setting.
If there is more than one screen available (indicated by small arrows),
use the knob or the cursor keys to scroll through the help
information.
To access parameter help from other screens of the help system,
press the ON FIELD softkey.
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Concept Help
Pressing the CONCEPT softkey within the help system displays a short
description of the instrument.
Serial Numbers and Software Revision
Pressing the SERIAL # softkey within the help system displays
information on serial numbers and software revision codes of the
instrument.
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t HHHHeeeellllpppp To exit from the help system, press the HELP key again, or press the EXIT
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If there are warnings or errors pending (indicated by a flushing W or E),
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pressing the HELP key displays a list of the current messages. Using the
ERROR QU and WARNING softkeys, you can toggle between both lists. For
more information on warnings and errors, see Warnings and Errors on
page 107.
HELP softkey.
29
Introducing the 81110A/81104A Pulse and Pattern Generators
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The Rear Panel
The rear panel always provides two connectors:
The external input (EXT INPUT) can be used to connect an external
arming source (started or gated modes).
The input connector for external clock or PLL reference
(CLOCK/REF INPUT) can be used if a higher frequency accuracy is
required.
The GP-IB connector providing the interface for remote control.
The following figure shows the rear panel view with the option UN2.
CLK/REF InputExternal Input GP-IB Connector
Inputs and Outputs
With option UN2 the major inputs and outputs of the instrument (as
described in The Front Panel on page 18) are available at the rear
panel:
external input (EXT INPUT)
clock/reference input (CLK/REF INPUT)
trigger signal (TRIGGER OUT)
signal output (OUTPUT)
30
Fuse Holder
AC Line Socket
Serial Number
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