Agilent 81134A, 81133A User Manual

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Agilent 81133A/81134A Pulse Generator

User Guide

Important Notice

Manual Part Number

5988-7401EN

Revision

August 2002

Printed in Germany

Agilent Technologies Herrenberger Straße 130 D-71034 Böblingen Germany

Authors: t3 medien GmbH

Warranty

The material contained in this document is provided "as is," and is subject to being changed, without notice, in future editions. Further, to the maximum extent permitted by applicable law, Agilent disclaims all warranties, either express or implied, with regard to this manual and any information contained herein, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or performance of this document or of any information contained herein. Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms, the warranty terms in the separate agreement shall control.

Technology Licenses

The hardware and/or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license.

Restricted Rights Legend

If software is for use in the performance of a U.S. Government prime contract or subcontract, Software is delivered and licensed as "Commercial computer software" as defined in DFAR 252.227-7014 (June 1995), or as a "commercial item" as defined in FAR 2.101(a) or as "Restricted computer software" as defined in FAR 52.227-19 (June 1987) or any equivalent agency regulation or contract clause. Use, duplication or disclosure of Software is subject to Agilent Technologies' standard commercial license terms, and non-DOD Departments and Agencies of the U.S. Government will receive no greater than Restricted Rights as defined in FAR

52.227-19(c)(1-2) (June 1987). U.S. Government users will receive no greater than Limited Rights as defined in FAR 52.227-14 (June 1987) or DFAR

252.227-7015 (b)(2) (November 1995), as applicable in any technical data.

Safety Notices

CAUTION

A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met.

WARNING

A WARNING notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met.

2 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Safety Requirements 7

Contents

Safety Summary 7

Environmental Conditions 7 Before Applying Power 8 Ground the Instrument 8 Do not Operate in an Explosive Atmosphere 8 Do not Remove the Instrument Cover 8

Initial Inspection 9 Power Requirements 10 Performance Requirements 10 Ventilation Requirements 10 Cleaning Recommendation 11 Declaration of Conformity 12

Introduction to the Agilent 81133A/81134A Pulse Generator 13

Benefits and Key Features 14 Front Panel Overview 15

Input and Outputs 16

Rear Panel Overview 18

Operating the Agilent 81133A/81134A Pulse Generator 19

Navigation through the Pages 20 How to Navigate through the Parameters at one Page 21 How to Select a Parameter from a Selection List 21 How to Change a Number Field 23

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 3

Contents

Setting Up Generic and Advanced Signals 27

Setting Up a Clock Signal 28

Using the Graphical User Interface 29 Using the Remote Programming Interfaces 35

Setting Up a Pulse Signal 36

Using the Graphical User Interface 36 Using the Remote Programming Interfaces 39

Setting Up a Data Pattern 40

Using the Graphical User Interface 40 Using the Remote Programming Interfaces 45

Setting Up a Burst Signal 46

Using the Graphical User Interface 46 Using the Remote Programming Interfaces 51

Setting Up a Repetitive Burst Signal 52

Using the Graphical User Interface 52 Using the Remote Programming Interfaces 57

Setting Up Signals for a Stressed Eye Diagram Measurement

Connecting the Instruments 59 Setting Up the 81134A by Using the Graphical User Interface 60 Setting Up the 33250A Waveform Generator 63 Viewing the Eye Diagram on the 86100 DCA 63 Play with the Settings 64

Using the Agilent 81133A/81134A Pulse Generator 65

Pages of the User Interface 66 Combining Parameters for Signal Generation 68

Instrument Modes 68 Pattern Modes 70 Signal Modes 71 Variable Crossover 72 Clock Sources 73 Start Mode 75 Trigger Out 75

4 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Contents

Timing of Generated Signals

Clock 77 Pulses 78 Data Pattern 79 PRBS 80 Started Burst 81 Repetitive Burst 82

Jitter Modulation 83 Saving and Recalling Settings 83

Updating the Firmware 85

Troubleshooting 87

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 5

Contents

6 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Safety Requirements

The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument.

Agilent Technologies Inc. assumes no liability for the customer's failure to comply with these requirements.

Before operation, review the instrument and manual for safety markings and instructions. You must follow these to ensure safe operation and to maintain the instrument in safe condition.

Safety Summary

This product is a Safety Class 1 instrument (provided with a protective earth terminal). The protective features of this product may be impaired if it is used in a manner not specified in the operation instructions.

All Light Emitting Diodes (LEDs) used in this product are Class 1 LEDs as per IEC 60825-1.

Environmental Conditions

This instrument is intended for indoor use in an installation category II, pollution degree 2 environment. It is designed to operate within an operating temperature range of 0 – 55 °C (32 – 130 °F) at a maximum relative humidity of 95% and at altitudes of up to 2000 meters.

Refer to the specifications tables for the ac mains voltage requirements and ambient operating temperature range.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 7

Safety Requirements Safety Summary

Before Applying Power

Verify that all safety precautions are taken.

The power cable inlet of the instrument is used to disconnect the instrument from the mains in case of hazard. The instrument must be positioned so that the operator can easily access the power cable inlet.

When the instrument is mounted in a rack, the rack must be provided with an easily accessible mains switch.

Ground the Instrument

To minimize shock hazard, the instrument chassis and cover must be connected to an electrical protective earth ground. The instrument must be connected to the ac power mains through a grounded power cable, with the ground wire firmly connected to an electrical ground (safety ground) at the power outlet. Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury.

Do not Operate in an Explosive Atmosphere

Do not operate the instrument in the presence of flammable gases or fumes.

Do not Remove the Instrument Cover

Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made only by qualified personnel.

Instruments that appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel.

8 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Initial Inspection Safety Requirements

Initial Inspection

Inspect the shipping container for damage. If the container or cushioning material is damaged, keep it until the contents of the shipment have been checked for completeness and the instrument has been verified both mechanically and electrically.

WARNING To avoid hazardous electric shock, do not perform electrical tests

when there are signs of shipping damage to any part of the instrument's outer covers or panels.

Check if the Agilent 81133A or 81134A shipping container contains the following standard deliverables:

• The Agilent 81133A or 81134A Pulse Generator

• The Getting Started Brochure and the Product CD

•A power cable

•A USB cable

If the contents are incomplete, if there is mechanical damage, or if the instrument does not work within its specifications, notify the nearest Agilent office. The Agilent office will arrange for repair or replacement without awaiting settlement.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 9

Safety Requirements Power Requirements

Power Requirements

NOTE When the front panel switch is off, the instrument is in “standby”

mode. The instrument is disconnected from the AC line power only by disconnecting the power cord.

The instrument can operate from any single-phase AC power source supplying 100 – 240 V in the frequency range from 47 – 63 Hz. The maximum power consumption is 200 VA with all options installed. When the instrument is switched on the power supply adapts automatically to the applied AC power (Auto Selection) and monitors the AC power range during operation.

Performance Requirements

For best performance of data transfer and for EMC compliance use an Agilent 82357-61601 Mini-USB cable only.

Ventilation Requirements

Make sure that there is adequate clearance of 50 mm (2 in) at the top and right side to ensure adequate air flow. If the air flow is restricted, the internal operating temperature will be higher, reducing the instrument's reliability.

NOTE Do not cover the ventilation holes.

10 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Cleaning Recommendation Safety Requirements

Cleaning Recommendation

Use a dry cloth or one slightly dampened with water to clean external case parts. Do not attempt to clean internally.

WARNING To prevent electrical shock, disconnect the instrument from mains

before cleaning.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 11

Safety Requirements Declaration of Conformity

Declaration of Conformity

DECLARATION OF CONFORMITY

According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

Manufacturer s Name:

Manufacturer s Address:

Agilent Technologies Deutschland GmbH

Boeblingen Verifications Solutions (BVS)

Herrenberger Str. 130

D-71034 Boeblingen

Declares, that the product

Product Name: 3.35 GHz Pulse Generator

Model Numbers: 81133A

81134A

Single Channel Pulse Generator

Dual Channel Pulse Generator

Product Options: This declaration covers all options of the above products.

Conforms with the following European Directives:

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC

(including 93/68/EEC) and carries the CE Marking accordingly.

Conforms with the following product standards:

EMC

Safety

Standard

IEC 61326-1:1997+A1:1998 / EN 61326-1:1997+A1:1998

CISPR 11:1997 / EN 55011:1998 Group 1 Class A

IEC 61000-4-2:1995 / EN 61000-4-2:1995 4 kV CD, 8 kV AD

IEC 61000-4-3:1995 / EN 61000-4-3:1995+A1:1998 3 V/m, 80-1000 MHz

IEC 61000-4-4:1995 / EN 61000-4-4:1995 0.5 kV signal lines, 1 kV power lines

IEC 61000-4-5:1995 / EN 61000-4-5:1995 0.5 kV line-line, 1 kV line-ground

IEC 61000-4-6:1996 / EN 61000-4-6:1996 3 V, 0.15-80 MHz

IEC 61000-4-8:1993 / EN 61000-4-8:1993 30 A/m

IEC 61000-4-11:1994 / EN 61000-4-11:1994 1 cycle/100%

Canada: ICES-001:1998

Australia/New Zealand: AS/NZS 2064.1

IEC 61010-1:2001 /EN 61010-1:2001

Canada: CSA C22.2 No. 1010.1:1992

USA: UL 3111-1:1994

Limit

Supplemental Information:

The products were tested in a typical configuration with Agilent Technologies test systems.

2002-August-01

Date

Authorized EU-representative: Agilent Technologies Deutschland GmbH, Herrenberger Strasse 130, D-71034 Boeblingen, Germany

Revision: A Issue Date: 2002-August-01

For further information, please contact your local Agilent Technologies sales office, agent or distributor.

Hans-Martin Fischer

Name

Product Regulations Engineer

Title

12 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Introduction to the Agilent 81133A/81134A Pulse Generator

The Agilent 81133A and 81134A Pulse/Pattern Generators are highend, easy-to-use tools for generating pulses, patterns and data at speeds up to 3.35 GHz. They are ideal instruments for testing logic devices (for example, ECL, LVDS, LVPECL) and other digital devices with clock rates from 15 MHz to 3.35 GHz.

You can use the Pulse Generators for applications where timing and performance are critical and full control over signal jitter is required. The instruments are ideal data and pattern sources for eye diagram measurements.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 13

Introduction to the Agilent 81133A/81134A Pulse Generator Benefits and Key Features

Benefits and Key Features

Your ad vant ages a re:

• Fast rise times, low jitter and full parameter flexibility

When timing is critical, the 81133A/81134A’s fast rise times, the low jitter and full parameter flexibility make it an ideal pulse, clock and data source.

•PRBS from 2

You can evaluate the performance of a device in eye diagram measurements with PRBS from 2

• Full signal manipulation

You can add jitter to clock or data signals with the Delay Control Input and deform the eye with the Variable Crossover feature.

-1 … 231-1

-1 … 231-1.

• Predefined levels

You can use the predefined levels to easily set up channels for commonly used logic families. These are: ECL, LVPECL, LVDS.

• Data can be 8 kB of pattern memory

You can create large data patterns with 8 kB of pattern memory.

Key Features Overview

The key features are:

Frequency Range 15 MHz – 3.35 GHz Clock Jitter 1.5 ps RMS typ. Voltage Amplitude 50 mV … 2.00 V PRBS 2 Transition Times 20% - 80%

(10% - 90%) Delay Modulation Range (Jitter) ± 250 ps, ± 25 ps selectable Data 8 kBit memory, RZ, NRZ,

Delay Range -5 ns … 230 ns Frequency Divider 1, 2, 4, ... 128

-1 … 231-1

< 60 ps (< 90 ps)

Burst Capability

Frequency Divider The freqency of the output signals must always be > 15 MHz. This

limits the available range for the frequency divider (for example, for a 32 MHz signal, for the frequency divider, 2 (= 16 MHz) is available, but not 4 (= 8 MHz)).

14 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Front Panel Overview Introduction to the Agilent 81133A/81134A Pulse Generator

Front Panel Overview

The following figure shows the main elements of the front panel.

Interface

Softkeys Inputs and outputsGraphical User

Tab Keys to navigate between the pages

The front panel has the following elements:

• Graphical User Interface The graphical user interface is used for monitoring (and changing)

the instrument’s settings

Numeric Keys

Navigation knob

•Softkeys The softkeys provide context-sensitive functions (functionality

changes according to requirements)

•Numeric keys Used to set parameter values.

•Tab keys Used to scroll through the pages of the graphical user interface.

• Navigation knob Used to navigate through and to change parameter values in an easy

way, and also for navigating through the online help. For more information, see “Operating the Agilent 81133A/81134A

Pulse Generator” on page 19.

•Inputs and Outputs The instrument provides global and channel-specific inputs and

outputs as described in the following section.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 15

Introduction to the Agilent 81133A/81134A Pulse Generator Front Panel Overview

Input and Outputs

Global Inputs and Outputs

Channel Inputs and Outputs

The Agilent 81133A/81134A pulse generator provides the following inputs and outputs:

Channel Specific Inputs and Outputs For each channel:

•One Delay Control Input to apply an external signal for jitter modulation.

For more information, see “Jitter Modulation” on page 83.

• One normal and one inverted Output for the generated signal

Global Inputs and Outputs For the instrument:

•Clock Input The clock input is used to apply an external clock signal or a

reference signal for the internal PLL if a higher frequency accuracy than 50ppm is required.

This input can be AC or DC terminated. If it is DC is terminated, the termination voltage can be set.

For more information, see “Clock Sources” on page 73.

•Start Input The start input is used to start the instrument on an external signal. For more information, see “Start Mode” on page 75.

• Trigger Output The trigger output can be used to trigger another instrument. For more information, see “Trigger Out” on page 75.

16 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Front Panel Overview Introduction to the Agilent 81133A/81134A Pulse Generator

LEDs The front panel of the 81133A/81134A pulse generator contains the

following LEDs:

LED Description

Unlock When this LED is lit, the frequency entered for the external clock

does not match the actual input from the external clock. In this state, the internal PLL is not locked and the instrument's outputs may not be within specification.

You have to either reenter the frequency of the external clock, or execute the Measure function. See “Clock Sources” on page 73 for details.

Active When lit, indicates that the instrument is either in external or direct

external clock mode. A valid external clock signal has to be applied to the clock input.

If not lit, the internal clock source is used.

Armed Indicates that the instrument is waiting for a signal at the Start In-

put.

When the specified signal arrives, the instrument starts generating signals.

Port LEDs Indicate the status of the port. When the LED is lit, the port is

active.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 17

Introduction to the Agilent 81133A/81134A Pulse Generator Rear Panel Overview

Rear Panel Overview

At the rear panel, you can find the connectors for the remote programming interfaces GPIB, USB and LAN, and the power connector.

GPIB LAN

USB

18 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Operating the Agilent 81133A/81134A Pulse Generator

The instrument provides several navigation buttons that make it easy to scroll through the different pages of the graphical user interface and to change parameter values.

Scrolling through the Pages

To scroll through the different pages, use the instrument's tab keys (located below the navigation knob).

See “Navigation through the Pages” on page 20.

Changing Parameter Values

To change parameter values, use the navigation knob.

The following sections shows:

• “How to Navigate through the Parameters at one Page” on page 21

• “How to Select a Parameter from a Selection List” on page 21

• “How to Change a Number Field” on page 23

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 19

Operating the Agilent 81133A/81134A Pulse Generator Navigation through the Pages

Navigation through the Pages

The key tabs at the lower left corner of the display allows you to scroll through the different pages (Main, Channel, Data, Aux, and Config) of the graphical user interface.

Channel Page

Main Page

Config Page

Aux Page

Data Page

20 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

How to Navigate through the Parameters at one Page Operating the Agilent 81133A/81134A Pulse Generator

How to Navigate through the Parameters at one Page

The navigation knob makes it easy to move through and set the parameters:

♦ Rotate the navigation knob to move from one parameter to the next.

How to Select a Parameter from a Selection List

To select a parameter from a selection list:

1 Move the selection to the corresponding list by rotating the

navigation knob.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 21

Operating the Agilent 81133A/81134A Pulse Generator How to Select a Parameter from a Selection List

2 Press the navigation knob to open the selection list.

Press

PressPress

3 Rotate the navigation knob to scroll through the list.

Press

PressPress

4 Select an item by pressing the navigation knob (like clicking with

the mouse).

22 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

How to Change a Number Field Operating the Agilent 81133A/81134A Pulse Generator

How to Change a Number Field

You have three possibilities for changing a number field:

• By entering new values with the keypad

• By using the navigation knob to modify the values for fine-tuning

• By changing single digits

Entering New Values

To enter a new value:

1 Focus at the number field by rotating the navigation knob to the

desired position.

2 Enter the value using the keypad.

You can tell if the value in a field is active by the color of the field:

– Yellow: Value is active (affects output).

– Orange: Value is inactive.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 23

Operating the Agilent 81133A/81134A Pulse Generator How to Change a Number Field

3 Modify the unit:

– By pressing the respective softkey function (in this case, you can

immediately see the changes at the output).

Softkey functions to select the unit

Press

PressPress

Press

PressPress

– OR – By rotating the navigation knob.

In this case, you have to press Enter or the navigation knob to see the changes at the output.

Modify Values (Fine-Tuning)

To modify the value by using the navigation knob:

1 Focus at the number field by rotating the navigation knob to the

desired position.

2 Press Enter or the navigation knob once to set the focus.

24 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

How to Change a Number Field Operating the Agilent 81133A/81134A Pulse Generator

3 Press and rotate the navigation knob to set the least significant digit

to change.

Press

PressPress

NOTE This method is useful for fine-tuning. It also changes the values in real-

time, so that you can immediately see the changes at the output.

4 Rotate the navigation knob to change the value.

5 Press the navigation knob once when you are done.

Changing Single Digits

NOTE This procedure can also be used to change the unit of the parameter.

1 Focus at the number field by rotating the navigation knob to the

desired position.

2 Press and rotate the navigation knob to select the digit (number or

unit).

Press

PressPress

NOTE You can also press the arrows next to navigation knob.

3 Release the navigation knob.

Now when you rotate it, the number (or the unit) changes.

4 Press the navigation knob to set the number (or the unit).

Press

PressPress

You can now see the changes at the output.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 25

Operating the Agilent 81133A/81134A Pulse Generator How to Change a Number Field

26 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up Generic and Advanced Signals

The intention of this chapter is to give the necessary steps to set up generic and advanced signals for first-time users of the Agilent 81133A/81134A Pulse Generator.

Examples are given for the following types of signals:

• “Setting Up a Clock Signal” on page 28

• “Setting Up a Pulse Signal” on page 36

• “Setting Up a Data Pattern” on page 40

• “Setting Up a Burst Signal” on page 46

• “Setting Up a Repetitive Burst Signal” on page 52

• “Setting Up Signals for a Stressed Eye Diagram Measurement” on

page 58

All these signals can be set up either by using the user interface, or by sending SCPI commands. In the following examples, both are described.

It is intended that you work through the example in the order in which they appear. The first example therefore provides the most detailed instructions, while the other examples are described in less detail.

NOTE For all examples, the Agilent 81134A Pulse Generator (with two

channels) is used.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 27

Setting Up Generic and Advanced Signals Setting Up a Clock Signal

Setting Up a Clock Signal

Ta s k Set up two clock signals with 100 MHz and 200 MHz frequencies, a

duty cycle of 50%, a high level of 1.0 V and a low level of 0 V.

Duty Cycle = 50%

1.0 V

0.0 V

f = 200 MHz

1.0 V

0.0 V

f = 100 MHz

Use Cases Generating clock signals can be used for:

•Boards evaluation

•Microprocessors

•A/D Converters

• PCI/PCI-X validation

• Digital ASIC design for high-speed HDD

Duty Cycle = 50%

28 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Clock Signal Setting Up Generic and Advanced Signals

Using the Graphical User Interface

First Steps Before you start:

1 Put the instrument into operation.

2 Protect the DUT by disconnecting the channel outputs first.

Do this by pressing the softkey next to the following function:

The open contactor shows you that your DUT is now disconnected.

Instrument Settings To set the instrument parameters:

1 In the instrument panel, choose the Pulse/Pattern mode.

2 Switch to Freq and then with the numeric keypad enter 200 as the

magnitude of the frequency.

3 Select the desired unit MHz by pressing the corresponding softkey.

Channel 1 Settings To set the channel parameters for channel 1:

1 Switch to the Channel page.

Per default, channel 1 is selected.

2 Select the pattern mode Square.

In the Timing panel, the following parameter are set as default:

–The Delay is set to 0 ps.

–The DCycle is set to 50%.

–The Deskew is disabled.

3 In the Levels panel:

–Switch Ampl to High and set High to 1.0 V.

–Set Low to 0 V.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 29

Setting Up Generic and Advanced Signals Setting Up a Clock Signal

4 Enable the Channel 1 normal Output:

By pressing the respective softkey in the user interface:

– OR – By pressing the normal Out softkey for channel 1 next to the Output

port.

Normal Out Channel 1

Instrument Mode

Pattern Mode

Predefined Timing Settings for the Square Wave Signal (Clock)

The Channel 1 page now looks as follows:

30 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Clock Signal Setting Up Generic and Advanced Signals

Channel 2 Settings To set the channel parameters for channel 2:

1 Switch to channel 2 by pressing the Ch2 softkey .

2 Select the pattern mode Square.

3 Set the Freq. Divider to 2.

4 In the Levels panel:

–Switch Ampl to High and set High to 1.0 V.

–Set Low to 0 V.

5 Enable the Channel 2 normal Output either:

By pressing the respective softkey in the user interface.

– OR – By pressing the normal Out softkey for channel 2 next to the Output

port.

Normal Out Channel 2

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 31

Setting Up Generic and Advanced Signals Setting Up a Clock Signal

The Channel 2 page now looks as follows:

Frequency Divider

Reconnect the DUT Reconnect the DUT by clicking the following softkey function:

32 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Clock Signal Setting Up Generic and Advanced Signals

Generated Signal If you attach a scope (as DUT), you can immediately see the signal.

Use the Pulse Generator’s TRIGGER OUT to trigger the scope.

To enable the trigger output:

1 At the Aux page, press the TrigOut softkey function.

Indicator

Trig O ut s of t k e y function

The green LED indicates that Trigger Out is enabled. – OR – Press the Trigger Out softkey next to the Trigger Out port.

Trig ger O ut softkey

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 33

Setting Up Generic and Advanced Signals Setting Up a Clock Signal

The signals as displayed on a standard oscilloscope are depicted below.

34 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Clock Signal Setting Up Generic and Advanced Signals

Using the Remote Programming Interfaces

The following code performs the same task.

Protect the DUT

Set up the Instrument

Set up Channel 1

Set up Channel 2

//disconnect channels :OUTP:CENT OFF

//set mode to Pulse/Pattern :FUNC PATT

//set freq to 200 MHz :FREQ 200 MHz

//set pattern mode to Square :FUNC:MODE1 SQU

//set high-Level to 1 V :VOLT1:HIGH 1.000 V

//set low-level to 0 V :VOLT1:LOW 0 V

//enable output channel 1 :OUTP1:POS ON

//set pattern mode to Square :FUNC:MODE2 SQU

// set freq div to 2 :OUTP2:DIV 2

//set the high-Level to 1 V :VOLT2:HIGH 1.000 V

//set low-level to 0 V :VOLT2:LOW 0 V

//enable output channel 2 :OUTP2:POS ON

Generate the Signals

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 35

//reconnect the channels :OUTP:CENT ON

//enable trigger output :OUTP0 ON

Setting Up Generic and Advanced Signals Setting Up a Pulse Signal

Setting Up a Pulse Signal

Ta s k Set up a continuous pulse signal with 20 ns period, a pulse width of

5 ns, an amplitude of 2.0 V and an offset of 1.5 V (high level 2.5 V, low level 500 mV).

Pulse Width = 5 ns

2.5 V

500 mV

Period = 20 ns

Using the Graphical User Interface

Instrument Settings To set the instrument parameters:

1 Disable the outputs.

2 In the instrument panel, choose the Pulse/Pattern mode.

3 Set the Period to 20 ns.

Channel Settings To set the channel parameters:

1 Switch to the Channel page.

2 Select the pattern mode Pulse.

3 In the Timing panel:

–Switch from DCyle to Width and set the Width to 5 ns.

4 In the Levels panel, set:

–The level format to Custom.

– Switch from High/Low to Amplitude/Offset.

– Amplitude to 2.0 V.

– Offset to 1.5 V.

36 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Pulse Signal Setting Up Generic and Advanced Signals

5 Enable the Channel 1 normal Output:

By pressing the respective softkey in the user interface:

– OR – By pressing the normal Out softkey for channel 1 next to the Output

port.

The Channel page now looks as follows:

Pattern Mode

Width

Levels

Reconnect the DUT Enable the outputs:

Generated Signal Use the pulse generator’s TRIGGER OUT to trigger the scope.

To set up the trigger output:

1 On the Aux page, select the trigger mode Pulse.

The frequency of the trigger output equals the system frequency.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 37

Setting Up Generic and Advanced Signals Setting Up a Pulse Signal

2 Enable the trigger output.

Tr ig g e r Mode

Trig Out sof t ke y function

The signal as displayed on a standard oscilloscope is depicted below.

38 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Pulse Signal Setting Up Generic and Advanced Signals

Using the Remote Programming Interfaces

The following code performs the same task.

Protect the DUT

Set up the Instrument

Set up Channel 1

Generate the Signals

//disconnect channels :OUTP:CENT OFF

//set mode to Pulse/Pattern :FUNC PATT

//set period to 20 ns :PER 20 ns

//set pattern mode to Pulse :FUNC:MODE1 PULSE

//set width to 5 ns :WIDT1 5 ns

//set ampl to 2 V :VOLT1:AMPL 2.000 V

//set offset to 1.5 V :VOLT1:OFFSET 1.5 V

//enable output channel 1 :OUTP1:POS ON

//reconnect channels :OUTP:CENT ON

//use trigger mode Pulse :OUTP0:SOUR PER

//enable trigger output :OUTP0 ON

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 39

Setting Up Generic and Advanced Signals Setting Up a Data Pattern

Setting Up a Data Pattern

Ta s k Set up two signals:

• A PRBS signal to test a digital transmitter.

• A 32-bit pattern signal with NRZ data output format at 500 MHz to check a digital circuit with ECL logic.

The pattern is:

11110011100110010010100100000000

NOTE This example is demonstrated with the 81134A instrument.

With the 81134A instrument, you can set up both signals simultaneously.

Using the Graphical User Interface

Instrument Settings To set the instrument parameters:

1 Disable the outputs.

2 In the instrument panel, choose the Pulse/Pattern mode.

3 Set the frequency to 500 MHz.

Channel Settings for the PRBS Signal To set the channel parameters for channel 1:

1 Switch to the Channel page.

2 Select the pattern mode PRBS.

3 Select the PRBS polynome 2

4 Select the signal mode NRZ.

5 In the Levels panel, select the predefined level format ECL.

This automatically sets:

–the Amplitude to 800 mV

–the Offset to –1.350 V

–the Term. Voltage to –2.0 V

-1.

40 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Data Pattern Setting Up Generic and Advanced Signals

6 Enable the Channel 1 normal Output:

By pressing the respective softkey in the user interface:

– OR – By pressing the normal Out softkey for channel 1 next to the Output

port.

The Channel page now looks as follows:

PRBS Polynome

Signal Mode

Pattern Mode PRBS

Channel Settings for the Pattern

Signal

ECL Levels

To set the channel parameters for channel 2:

1 Switch to Channel 2 by pressing the Ch2 softkey .

2 Switch to the Channel page.

3 Select the pattern mode Data.

4 Select the signal mode NRZ.

5 In the Levels panel, select the predefined level format ECL.

This automatically sets:

–the Amplitude to 800 mV

–the Offset to –1.350 V

– the Term. Voltage to –2.0 V

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 41

Setting Up Generic and Advanced Signals Setting Up a Data Pattern

6 Enable the Channel 2 normal Output either:

By pressing the respective softkey in the user interface.

– OR – By pressing the normal Out softkey for channel 2 next to the Output

port.

The Channel page now looks as follows:

Pulse Type NRZ

Pattern Mode Data

Data Settings for the Pattern Signal To set the data pattern:

1 Switch to the Data page.

2 Enter a Data Length of 32 bits.

3 Switch to the Numeric Edit Mode.

4 Enter the data pattern via the keypad for channel 2.

ECL Levels

42 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Data Pattern Setting Up Generic and Advanced Signals

The Data page now looks as follows:

Data pattern length

Data pattern for channel 2

Numeric Edit Mode

Reconnect the DUT Enable the outputs:

Generated Signals Use the pulse generator’s TRIGGER OUT to trigger the scope on the

data pattern.

To set up the trigger output:

1 On the Aux page, in the Trigger Output panel:

– Select the trigger mode Data.

One trigger pulse occurs at the start of the repetitive data pattern.

–Set the Ampl to 2 V.

–Set the Offset to 1 V.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 43

Setting Up Generic and Advanced Signals Setting Up a Data Pattern

2 Enable the trigger output.

Tr ig g e r Mode

Trig Out sof t ke y function

The signals as displayed on a standard oscilloscope are depicted below.

44 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Data Pattern Setting Up Generic and Advanced Signals

Using the Remote Programming Interfaces

The following code performs the same task:

Protect the DUT

Set Up the Instrument

Set up Channel 1

Set up Channel 2

//disconnect channels :OUTP:CENT OFF

//set mode to Pulse/Pattern :FUNC PATT

//set freq to 500 MHz :FREQ 500 MHz

//set pattern mode to PRBS :FUNC:MODE1 PRBS

//set polynome to 2^12-1 :FUNC:MODE1 PRBS, 12

//set datamode to NRZ :DIG1:SIGN:FORM NRZ

//set predefined levels to ECL values :VOLT1:AMPL 800 mV; :VOLT1:OFFS -1.350 V; :VOLT1:TERM -2.000 V

//enable output channel 1 :OUTP1:POS ON

//set pattern mode to Data :FUNC:MODE2 DATA

//set datamode to NRZ :DIG2:SIGN:FORM NRZ

//set predefined levels to ECL values :VOLT2:AMPL 800 mV; :VOLT2:OFFS -1.350 V; :VOLT2:TERM -2.000 V

//enable output channel 2 :OUTP2:POS ON

//set datalength to 32 :DIG2:PATT:LENG 32

//set pattern in channel 2 :DIG2:PATT #23211110011100110010010100100000000, DUAL

Generate the Signals

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 45

//reconnect channels :OUTP:CENT ON

// Set up the trigger

//set trigger mode to data :OUTP0:SOUR BITS

//set ampl to 2 V :VOLT0:AMPL 2 V

//set offset to 1 V :VOLT0:OFFSET 1 V

//enable trigger output :OUTP0 ON

Setting Up Generic and Advanced Signals Setting Up a Burst Signal

Setting Up a Burst Signal

Ta s k Set up a burst signal consisting of a 32-bit data pattern repeated twice

at a period of 500 ps with 50 ps delay and 100 ps pulse width.

The data pattern is: 10100000000000000000000000000000

The amplitude is 2.0 V and the offset is 0 V.

Start the output at the rising edge of an external signal with 1 V threshold applied at the start input.

Arming Source

Triggered by:

External Signal

Width = 100 ps

Generated

Signal

1 V

-1 V

Delay = 50 ps

Period = 500 ps

Using the Graphical User Interface

Instrument Settings To set the instrument parameters:

1 Disable the outputs.

2 In the instrument panel, choose the Burst mode.

3 Set the burst repetition to 2.

4 Set the Period to 500 ps.

46 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Burst Signal Setting Up Generic and Advanced Signals

The instrument panel now looks as follows:

Burst RepetitionInstrument

Mode

Channel Settings for the PRBS Signal To set the channel parameters:

1 Switch to the Channel page.

2 Set the signal mode to RZ.

3 In the Timing panel:

–Switch from Dcycle to Width and set the Width to 100 ps.

–Set the Delay to 50 ps.

4 In the Levels panel, set:

– The level format to Custom.

– Amplitude to 2.0 V.

– Offset to 0.0 V.

5 Enable the Channel 1 normal Output:

By pressing the respective softkey in the user interface:

– OR – By pressing the normal Out softkey for channel 1 next to the Output

port.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 47

Setting Up Generic and Advanced Signals Setting Up a Burst Signal

The Channel page now looks as follows:

Timing Parameter

Levels

Data Settings for the Pattern Signal To set the data pattern:

1 Switch to the Data page.

2 Enter a Data Length of 32 bits.

3 Enter the data pattern via the keypad for channel 1.

The Data page now looks as follows:

Data pattern length

Data pattern for channel 1

Graphic Edit Mode

48 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Burst Signal Setting Up Generic and Advanced Signals

Reconnect the DUT Enable the outputs:

Auxiliary Settings for Start Input and

Trigger Output

NOTE In burst mode, the “armed” mode is deactivated as soon as the

To set the start input and trigger output parameters:

1 Switch to the Aux page.

2 In the Start Input panel, set:

–The start mode to Ext. Input.

This automatically puts the instrument in “armed” mode. This is indicated by the activated Armed softkey function.

“Armed” mode means that the signal is output as soon as the specified external signal occurs at the start input.

specified burst has been output. To put the instrument in “armed” mode again, press the Armed

softkey function.

– Start on the Rising edge.

– The threshold to 500 mV.

3 In the Trigger Output panel:

– Select the trigger mode Pulse.

The frequency of the trigger output equals the frequency as specified in the instrument panel.

– Set Ampl to 2 V.

– Set Offset to 0 V.

– Enable the trigger output.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 49

Setting Up Generic and Advanced Signals Setting Up a Burst Signal

The Aux page now looks as follows:

Armed is activated

Parameters to start the output by an external

Tr ig g e r Mode

signal

Tr ig O ut softkey function

Generated Signal Use the generator’s TRIGGER OUT to trigger a scope.

The signal as displayed on a standard oscilloscope is depicted below.

50 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Burst Signal Setting Up Generic and Advanced Signals

Using the Remote Programming Interfaces

The following code performs the same tasks:

Protect the DUT

Set Up the Instrument

Set up Channel 1

//disconnect channels :OUTP:CENT OFF

//set mode to Burst, 2 :FUNC BURST, 2

//set period to 500 ps :PER 500 ps

//set signalmode to RZ :DIG1:SIGN:FORM RZ

//set width to 100 ps :WIDT1 100 ps

//set delay to 50 ps :DEL1 50 ps

//set predefined levels to Custom values (Ampl=2V; Offset=0mV) :VOLT1:AMPL 2 V; :VOLT1:OFFS 0 mV

//enable output channel 1 :OUTP1:POS ON

//set datalength to 32 :DIG:PATT:LENG 32

//set pattern in channel 1 :DIG1:PATT #23210100000000000000000000000000000, DUAL

Generate the Signals

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 51

//reconnect channels :OUTP:CENT ON

// Set up the trigger

//set startmode to Ext. Input :ARM:SOUR EXT

//set starton to Rising :ARM:SLOP POS

//set threshold to 500 mV :ARM:LEV 500 mV

//set trigger mode to Pulse :OUTP0:SOUR PER

//set ampl to 2 V :VOLT0:AMPL 2 V

//set offset to 0 V :VOLT0:OFFSET 0 V

//enable trigger output :OUTP0 ON

Setting Up Generic and Advanced Signals Setting Up a Repetitive Burst Signal

Setting Up a Repetitive Burst Signal

Ta s k Set up a signal with 4 repeated bursts.

Each burst consists of a 32-bit pattern signal with NRZ data output format at 100 MHz to check a digital circuit with LVPECL logic.

The data pattern is:

11100000000000000000000000000000

Data Data Data Data Data Data Data

Data Length = 32 x 10 ns

Burst Length = 4

x Data Length

Number of Null data packets =

Burst Length

Using the Graphical User Interface

Instrument Settings To set the instrument parameters:

1 Disable the outputs.

2 In the instrument panel, choose the RBurst mode.

3 Enter 4 for the number of null data packets.

4 Define that the number of zeros that follows the repeated bursts is

as large as the burst length.

5 Set the frequency to 100 MHz.

52 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Repetitive Burst Signal Setting Up Generic and Advanced Signals

The instrument panel now looks as follows:

Instrument Mode

Channel Settings for the PRBS Signal To set the channel parameters:

1 Switch to the Channel page.

2 In the Timing panel:

– Set the signal mode to NRZ.

–Set the Delay to 50 ps.

3 In the Levels panel, set:

– The level format to Custom.

– Amplitude to 2.0 V.

Burst Repetition

Specifies the number of zeros

– Offset to 0.0 V.

4 Enable the Channel 1 normal Output:

By pressing the respective softkey in the user interface:

– OR – By pressing the normal Out softkey for channel 1 next to the Output

port.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 53

Setting Up Generic and Advanced Signals Setting Up a Repetitive Burst Signal

The Channel page now looks as follows:

Levels

Data Settings for the Pattern Signal To set the data pattern:

1 Switch to the Data page.

2 Enter a Data Length of 32 bits.

3 Enter the data pattern via the keypad for channel 1.

The Data page now looks as follows:

Data pattern length

Data pattern for channel 1

Graphic Edit Mode

54 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Repetitive Burst Signal Setting Up Generic and Advanced Signals

Reconnect the DUT Enable the outputs:

Generated Signal Use the pulse generator’s TRIGGER OUT to trigger a scope.

To set up the trigger output:

1 On the Aux page, in the Trigger Output panel:

– Select the trigger mode Pulse.

One trigger pulse occurs at the start of the repetitive data pattern.

–Set the Ampl to 1 V.

–Set the Offset to 0 V.

–Set the Divider to 256.

2 Enable the trigger output.

The Aux page looks now as follows:

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 55

Setting Up Generic and Advanced Signals Setting Up a Repetitive Burst Signal

The signal as displayed on a standard oscilloscope is depicted below.

56 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up a Repetitive Burst Signal Setting Up Generic and Advanced Signals

Using the Remote Programming Interfaces

The following code performs the same tasks:

Protect the DUT

Set Up the Instrument

Set up Channel 1

Generate the Signals

//disconnect channels :OUTP:CENT OFF

//set mode to rBurst, 4, 4 :FUNC RBURST, 4, 4

//set freq to 100 MHz :FREQ 100 MHz

//set signalmode to NRZ :DIG1:SIGN:FORM NRZ

//set delay to 50 ps :DEL1 50 ps

//set predefined levels to Custom values (Ampl=2V; Offset=0mV) :VOLT1:AMPL 2 V; :VOLT1:OFFS 0 mV

//enable output channel 1 :OUTP1:POS ON

//set datalength to 32 :DIG:PATT:LENG 32

//set pattern in channel 1 :DIG1:PATT #23211100000000000000000000000000000, DUAL

//reconnect channels :OUTP:CENT ON

// Prepare the trigger

//set trigger mode to Data :OUTP0:SOUR BITS

//set ampl to 1 V :VOLT0:AMPL 1 V

//set offset to 0 V :VOLT0:OFFSET 0 V

//enable trigger output :OUTP0 ON

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 57

Setting Up Generic and Advanced Signals Setting Up Signals for a Stressed Eye Diagram Measurement

Setting Up Signals for a Stressed Eye Diagram Measurement

Ta s k Set up signals for a stressed eye measurement by:

• Intentionally adding jitter to your signals

• Changing the crossover of the eye pattern

One-Channel Setup For a one-channel setup, you need:

• An 81133A or 81134A instrument

• An arbitrary waveform generator to generate additional jitter, for example, the 33250A

• A scope for displaying the signals, for example, the 86100 DCA

Two-Channel Setup For a two-channel setup, you need:

• An 81134A instrument

• An arbitrary waveform generator to generate additional jitter, for example, the 33250A (you might need two of them for two “independently jittering” output signals)

• A scope for displaying the signals, e.g. the 86100 DCA

NOTE This example is demonstrated with the 81134A instrument. The

two-channel instrument allows you to generate the distorted eye and a clean “reference eye” at the same time.

Use Cases Stressed eye measurements can be used:

• In board design: For testing the RF behavior of different board materials and transmission line geometries.

• For testing cables and connectors.

• For testing A/D converters.

58 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up Signals for a Stressed Eye Diagram Measurement Setting Up Generic and Advanced Signals

Connecting the Instruments

Connect the Pulse Generator, the Arbitrary Waveform Generator and the DCA as follows:

CAUTION Before disconnecting/connecting any cables make sure that the

81134A output channels are turned off!

81134A Pulse Generator

33250A

Arbitrary Waveform Generator

BNC-SMA Adaptor and 20 dB Attenuator

Channel 2

Delay Control

Input

Output

TrigOut

Channel 1

Trigger In

86100 DCA

Channel 1 Channel 2

Input

20 dB Attenuator

In detail:

1 Connect the 33250A output to the channel 2 delay control input of

the 81134A (use the BNC-SMA adaptor and a 20 dB attenuator).

2 Connect a 20 dB attenuator each to the channel 1 and the trigger

input of the DCA.

3 Connect the 81134A channel 2 output to the DCA’s channel 1 input.

4 Connect the 81134A trigger output to the DCA’s trigger input.

5 Power on the three units after you have made all connections.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 59

Setting Up Generic and Advanced Signals Setting Up Signals for a Stressed Eye Diagram Measurement

Setting Up the 81134A by Using the Graphical User Interface

Instrument Settings To set the instrument parameters:

1 Disable the outputs.

2 In the instrument panel, choose the Pulse/Pattern mode.

3 Set the Period to 1 GHz.

Channel Settings To set the channel parameters for channel 2:

1 Switch to the Channel page.

2 Switch to Channel 2 by pressing the Ch2 softkey .

3 Select the pattern mode PRBS.

4 Select the PRBS polynome 2

5 Select the signal mode NRZ.

-1.

6 Enable the variable crossover and set the crossover point at first to

50 %.

7 In the Timing panel:

– Select Delay Ctrl Input 250 ps.

–Set the Delay to 0 s.

– Set the DCycle to 50 %.

8 In the Levels panel, set:

–The level format to Custom.

– High to 1.0 V.

– Low to -1.0 V.

60 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up Signals for a Stressed Eye Diagram Measurement Setting Up Generic and Advanced Signals

The Channel page now looks as follows:

Delay Control Input for Channel 2 (Enabled)

Variable Crossover Point

Delay Ctrl Sensitivity

Reconnect the DUT Enable the outputs:

Generated Signal Use the pulse generator’s TRIGGER OUT to trigger the scope.

To set up the trigger output:

1 On the Aux page, select the trigger mode Pulse.

The frequency of the trigger output equals the system frequency.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 61

Setting Up Generic and Advanced Signals Setting Up Signals for a Stressed Eye Diagram Measurement

2 Enable the trigger output.

Tr ig g er Output (Enabled)

Delay Control Input (Enabled)

Trig Out sof t ke y function

62 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Setting Up Signals for a Stressed Eye Diagram Measurement Setting Up Generic and Advanced Signals

Setting Up the 33250A Waveform Generator

Program a 50 MHz sine wave with an amplitude of 2 Vpp:

1 Press the Freq softkey.

2 With the numeric keypad enter 50 as the frequency.

3 Select the desired unit MHz by pressing the corresponding softkey.

4 Press the Ampl softkey.

5 Enter the value 2 with the numeric keypad.

6 Press the Vpp softkey to select the desired unit.

Viewing the Eye Diagram on the 86100 DCA

To view the eye diagram on the scope:

1 Ensure that the channel outputs and the trigger output at the

81134A instrument are enabled.

2 On the scope, switch to channel 1.

3 Press the Source button near the trigger input until front panel is

selected.

4 Press the Eye/Mask Mode button.

5 Press AutoScale.

6 Switch on the 33250A output with the output key.

The signal as displayed on a standard oscilloscope is depicted below.

Delay modulated with sine wave

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 63

Setting Up Generic and Advanced Signals Setting Up Signals for a Stressed Eye Diagram Measurement

Play with the Settings

The delay control input adds additional delay to the signal depending on the voltage that is fed to the input.

• On the 33250A, you can change the amplitude and frequency of the signal to show the influence of the delay control input.

• Change from sine wave to rectangular wave by pressing the corresponding button.

You can also change the variable crossover point on the 81134A Channel panel.

The following signals show a clear eye, a signal modulated with sine wave and a signal modulated with rectangular wave.

Clear Eye Delay modulated with sine

wave

50 % Variable Crossover 30 % Variable Crossover 70 % Variable Crossover

Delay modulated with rectangle wave

64 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Using the Agilent 81133A/81134A Pulse Generator

CAUTION When using the Agilent 81133A/81134A Pulse Generator, make sure

you do not set parameters to values outside of the specified ranges. If any parameters are out of range, the generated signals may not be valid. The instrument does not check if values are within range.

For valid ranges, see the Online Help (available by pressing the "?" button on the instrument).

This chapter:

• Describes different pages of the graphical user interface.

• Describes how to combine parameters for generating specific signals.

• Shows typical timings. See “Timing of Generated Signals” on page 76.

• Provided information of saving and recalling of parameter settings. See “Saving and Recalling Settings” on page 83.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 65

Using the Agilent 81133A/81134A Pulse Generator Pages of the User Interface

Pages of the User Interface

The instrument has a user interface to simplify entering and monitoring of the signal settings. The user interface is divided into different pages and panels.

The following figure shows the instrument panel and the Channel page.

Instrument Panel

Channel Page

The parameters are available at the following panels and pages in the 81133A/81134A graphical user interface:

• Instrument Panel

The instrument panel is part of each page and provides controls that

define the basic setup of the instrument, such as base frequency and instrument mode.

These controls affect all channels.

•Main Page The Main page is used to display the results of the selftest and to

store and recall your parameter settings.

•Channel Page At the Channel page, you can specify the signal to be generated for

each channel individually regarding pattern mode, timing, and levels.

66 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Pages of the User Interface Using the Agilent 81133A/81134A Pulse Generator

• Data Page At the Data page, you can set up an arbitrary data pattern up to the

maximal available memory (8 kBit) per channel.

•Aux Page The Aux page provides controls to specify:

– The Clock Source

–The Start Input

– The Trigger Output

• Config Page If you want to program the instrument remotely, the Config page is

used to set up all necessary parameters to establish the connection between the instrument and your control PC.

To access the individual pages, use the instrument's tab keys (located below the navigation knob).

NOTE For a detailed description of the pages and their parameters, please

refer to the Online Help.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 67

Using the Agilent 81133A/81134A Pulse Generator Combining Parameters for Signal Generation

Combining Parameters for Signal Generation

The following table shows you how the various modes and parameters can be combined. Empty cells indicate that the combination is not applicable:

Instrument Mode Pulse/Pattern Burst RBurst

Pattern Mode

Signal Mode

Var iabl e

Crossover

Burst Length

Factor p

(For calculating the

length of the pause

that follows the

repeated data)

Square Pulse Data/PRBS Data Data

R1 RZ NRZ R1 RZ NRZ R1 RZ NRZ

30%

…

70%

1 … 16384 4 … 16384

NOTE For the clock source, the Internal YIG Oscillator, External Clock Input

and 10 MHz Reference can be used as the clock source for all combinations. The Internal Direct and External Direct can only be used as the clock source for Square pattern mode and NRZ signal mode.

30%

…

70%

(in increments of 4)

4 … 16384

(in increments of 4)

30%

…

70%

Instrument Modes

The instrument provides the following modes:

• Pulse/Pattern Mode In this mode, each channel can be set independently to generate a

continuous stream of:

– Square waves (clocks) of fixed width

– Pulses with selectable width or duty cycle

68 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Combining Parameters for Signal Generation Using the Agilent 81133A/81134A Pulse Generator

– Data in either RZ, R1 or NRZ format

– Pseudo random bit stream (PRBS) polynomials For details on these signals, see “Pattern Modes” on page 70.

•Burst Mode This mode enables you to generate a burst consisting of data

repeated n times followed by continuous zero data.

In Burst mode, exactly one burst of data is output after either:

– Applying a external signal at the start input.

– Asserting a manual trigger on one of the remote interfaces.

– Pressing the start button on the user interface. A burst consists of data packets repeated a selectable number of

times (in data pattern mode).

• Repetitive Burst Mode This mode enables you to generate a repetitive burst consisting of

data repeated n times. A pause of zeros is inserted between two successive bursts.

The repetitive burst is specified by two numbers. The first number (n) defines how often the specified data is repeated. The second number (p) defines the length of the pause that follows the repeated data.

The length of the pause is calculated by:

p x Length of Data Packets

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 69

Using the Agilent 81133A/81134A Pulse Generator Combining Parameters for Signal Generation

Pattern Modes

You can select the following pattern modes:

•Square Generates a square wave (clock) of fixed width (50% duty cycle).

•Pulse Generates pulses with selectable width or duty cycle.

•Data Generates data in either RZ, R1 or NRZ format. In RZ and R1 mode,

the pulse width can be selected as either width or duty cycle.

•PRBS Generates a PRBS polynomial of selectable type in either RZ, R1 or

NRZ format. In RZ and R1 mode, the pulse width can be selected as either width or duty cycle.

You can also select a frequency divider for all pattern modes.

70 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Combining Parameters for Signal Generation Using the Agilent 81133A/81134A Pulse Generator

Signal Modes

In Data and PRBS pattern modes, the pulse output format can be selected from RZ, R1, and NRZ. The timing of the different format is shown in the following diagram:

111001

NRZ

•RZ Return to 0 pulse format. On every 0 bit of the pattern, the signal remains low. On every 1 bit

of the pattern, the signal goes to high and then back to low after the time specified by the pulse width or duty cycle parameter.

•R1 Return to 1 pulse format. On every 1 bit of the pattern, the signal remains high. On every 0 bit

of the pattern, the signal goes to low and then back to high after the time specified by the pulse width or duty cycle parameter.

•NRZ Non-return to zero pulse format. A leading edge is generated for a 0 -> 1 data transition, a trailing

edge is generated for a 1 -> 0 data transition.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 71

Using the Agilent 81133A/81134A Pulse Generator Combining Parameters for Signal Generation

Variable Crossover

You can change the crossover point in range 30% … 70% of the NRZ

signal separately for each channel. The variable crossover is used to artificially close the eye pattern, which simulates distortion.

The crossover adjustment is not calibrated except for the 50% point.

Example The figure below shows the normal and complement output with the

crossover point set to 50% and 70% respectively.

Normal

50 %

Out

50 %

70 %

30 %

Compl.

Out

Normal

Out

Compl.

Out

72 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Combining Parameters for Signal Generation Using the Agilent 81133A/81134A Pulse Generator

Clock Sources

The selected clock source defines the time base from which all other

timing parameters are derived. You can select between:

•Internal The clock is derived from the internal YIG oscillator.

•External Enable the external clock input (Clock In) to accept an external

clock signal that forms the time base. The frequency is measured once by selecting the Measure function from the user interface or as a remote SCPI command (

:MEASure:FREQuency?

Measure Function

Clock Source

This value is then used to calculate frequency-dependent values, like the pulse width or the phase (available at the Channel page).

For more information about the Measure function, please refer to the Online Help.

• External 10 MHz Reference Enables the external clock input (Clock In) to apply a 10 MHz

reference clock. This clock is used as a reference for all timing parameters.

• Int. Direct/Ext. Direct The direct modes allow changes of frequency without dropouts in

the range of 1:2. They are used for applications (precise clock source) where dropouts would make a measurement impossible, for example, PLL frequency sweeps and microprocessor clock sweeps.

–Int. Direct

Allows you to vary the clock derived from the internal YIG oscillator in the range of one octave.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 73

Using the Agilent 81133A/81134A Pulse Generator Combining Parameters for Signal Generation

–Ext. Direct

Allows you to vary the frequency of the external clock signal in the range of one octave.

In external direct mode, the internal PLL is bypassed. This ensures that the instrument frequency exactly follows the external clock.

Range switching occurs at the following frequencies:

– 1680 MHz

– 840 MHz

– 420 MHz

– 210 MHz

– 105 MHz

– 52.5 MHz

– 26.25 MHz

NOTE The range-switching frequencies are based on 1680 MHz divided by

the frequency divider.

74 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Combining Parameters for Signal Generation Using the Agilent 81133A/81134A Pulse Generator

Start Mode

When the Ext. Input start mode is selected, the instrument sends the generated signal to the outputs according to the signal applied at the Start In connector.

You can define the following parameters that the external signal must meet:

• Threshold (voltage)

• Termination voltage

• Edge (rising/falling)

If you select the Ext. Input mode, the instrument automatically switches in armed mode. This means, the instrument waits for the selected edge to appear.

The further behavior of the instrument depends on the selected instrument mode:

• In Burst Mode: As soon as the selected signal appears at the input, the armed mode

is deactivated (the instrument sends one burst and then stops).

• In Pulse/Pattern and Repetitive Burst Mode: The instrument stays in armed mode (it sends the pattern/burst

every time the selected signal appears). The trigger output frequency is calculated by dividing the instrument frequency by the length of the data pattern.

Trigger Out

The trigger output can be set to one of the following modes:

•Trigger on pulse The trigger output is generated according to the instrument

frequency. It can optionally be divided by 1 up to 2

•Trigger on data One trigger pulse is generated on every start of the repetitive data

pattern. The trigger output frequency is calculated by dividing the instrument frequency by the length of the data pattern.

- 1 optionally.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 75

Using the Agilent 81133A/81134A Pulse Generator Timing of Generated Signals

NOTE The trigger divider does not take the frequency divider of the

channels into account. For a frequency divider of n, n trigger pulses are generated for each data packet, starting with the first edge of bit 0 of the data packet.

To get one trigger pulse per data packet when the channel divider factor is not equal to 1, the trigger mode must set to Trigger on pulse and the divider to n x X, where n is the frequency divider and X is the data length. For example, if the data length = 32 bits and the frequency divider of channel 1 = 2, the frequency divider of the trigger output has to be 64.

The trigger output can be enabled/disabled. The levels of the trigger output can be set as:

• Low Level – High Level

• Amplitude – Offset

Timing of Generated Signals

The following sections provide information about the signals that can be generated and shows the typical timings.

The instrument allows you to generate the following signals:

•Clock signals

•Pulses

• Data patterns

•PRBS

• Started bursts

• Repetitive bursts

NOTE You can also set the frequency divider for all channels. The minimum

frequency must remain above 15 MHz.

76 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Timing of Generated Signals Using the Agilent 81133A/81134A Pulse Generator

Clock

The following figure shows the typical timing for the clock signal.

Duty Cycle = 50 %

Output

Channel 1

Output

Channel 2

Freq. Divider = 2

Trigger Out

Characteristics • Pulse periods are generated continuously where:

– Delay and deskew of all channels is zero.

– The duty cycle is fixed at 50%.

• The instrument mode is Pulse/Pattern.

• The pattern mode is Square.

• For the clock source, you can select from:

– Internal (YIG Oscillator)

– External signal at Clock Input

– External 10 MHz Reference at Clock Input

– Direct Internal

– Direct External at Clock Input For more information about the clock sources, see “Clock Sources”

on page 73.

• The Trigger Out is generated with every clock pulse, but can be optionally divided by any number in the range 1 ... 2

– 1.

See also “Trigger Out” on page 75.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 77

Using the Agilent 81133A/81134A Pulse Generator Timing of Generated Signals

Pulses

The following figure shows the typical timing for continuous pulses.

Duty Cycle

Output

Channel 1

Delay

Output

Channel 2

Freq. Divider = 2

Trigger Out

Characteristics • Pulse periods can be either generated continuously or can be

started manually or by the arming source.

• Delay, pulse width (or duty cycle) and deskew can be set for each channel.

• The instrument mode is Pulse/Pattern.

• The pattern mode is Pulse.

• For the clock source, you can select from:

– Internal (YIG Oscillator)

– External signal at Clock Input

– External 10 MHz Reference at Clock Input For more information about the clock sources, see “Clock Sources”

on page 73.

• The Trigger Out is generated with every clock pulse, but can be

optionally divided by any number in the range 1 ... 2 See also “Trigger Out” on page 75.

– 1.

78 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Timing of Generated Signals Using the Agilent 81133A/81134A Pulse Generator

Data Pattern

The following figure shows the typical timing for a data pattern.

Data Pattern of 32 bits

Output

NRZ

Output

Trigger Out

11 0

01 1

Characteristics • A data pattern can be either generated continuously or can be

started manually or by the arming source. The data length is selectable in the range 32 … 8192 bits (in steps of

32).

• The instrument mode is Pulse/Pattern.

• The pattern mode is Data.

• You can select between RZ, NRZ and R1 signal modes for each output.

In R1 and RZ modes, the pulse width can be selected as either width or duty cycle.

• You can select between normal and inverted signals for each output.

• For the clock source, you can select from:

– Internal (YIG Oscillator)

– External signal at Clock Input

– External 10 MHz Reference at Clock Input For more information about the clock sources, see “Clock Sources”

on page 73.

• The Trigger Out marks every start of the repetitive data pattern, as long as no frequency divider has been applied.

See also “Trigger Out” on page 75.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 79

Using the Agilent 81133A/81134A Pulse Generator Timing of Generated Signals

PRBS

See “Data Pattern” on page 79 for for the timing diagram.

Characteristics • A PRBS signal can be either generated continuously or can be

started manually or by the arming source. The PRBS polynome is selectable from 2

• The instrument mode is Pulse/Pattern.

• The pattern mode is PRBS.

• You can select between RZ, NRZ and R1 signal modes for each output.

In R1 and RZ modes, the pulse width can be selected as either width or duty cycle.

• You can select between normal and inverted signals for each output.

• For the clock source, you can select from:

– 1 … 231 – 1.

– Internal (YIG Oscillator)

– External signal at Clock Input

– External 10 MHz Reference at Clock Input For more information about the clock sources, see “Clock Sources”

on page 73.

• The Trigger Out marks every start of the repetitive PRBS, as long as no frequency divider has been applied.

See “Trigger Out” on page 75.

80 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Timing of Generated Signals Using the Agilent 81133A/81134A Pulse Generator

Started Burst

The following figure shows the typical timing for the started burst. The bursts are started by the rising edge of the arming source.

Arming Source

Triggered by:

External Input

Manual Start

Output

Trigger Out

101

Data Pattern (Burst of 2)

00101

00 0000

Continuous Zeros

Characteristics • A burst of repeated data is started manually or by the arming

source.

• You can select the number of repeated bursts in the range 1 … 16384.

• The instrument mode is Burst.

• The pattern mode is Data.

• You can select between RZ, NRZ and R1 signal modes for each output.

In R1 and RZ modes, the pulse width can be selected as either width or duty cycle.

• You can select between normal and inverted signals for each output.

• For the clock source, you can select from:

– Internal (YIG Oscillator)

– External signal at Clock Input

– External 10 MHz Reference at Clock Input For more information about the clock sources, see “Clock Sources”

on page 73.

• The Trigger Out marks every start of the repetitive data pattern, as long as no frequency divider has been applied.

See also “Trigger Out” on page 75.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 81

Using the Agilent 81133A/81134A Pulse Generator Timing of Generated Signals

Repetitive Burst

The following figure shows the typical timing for the repetitive burst.

Burst = 4 x Data Pattern 4 null data packets

Output

Channel 1

Trigger Out

Data Data

Characteristics • A burst of repeated data can be either generated continuously or

Data Data

can be started manually or by the arming source.

• You can select the number of repeated data in the range 4 ... 16384 (in increments of 4).

• You can specify the factor p for calculating the length of the pause that follows the repeated data in the range 4 ... 16384 (in increments of 4):

null data length = Data pattern length x p

• The instrument mode is RBurst.

• The pattern mode is Data.

• You can select between RZ, NRZ and R1 signal mode for each output. In R1 and RZ mode, the pulse width can be selected as either width

or duty cycle.

• You can select between normal and inverted signals for each output.

• For the clock source, you can select from:

– Internal (YIG Oscillator)

– External signal at Clock Input

– External 10 MHz Reference at Clock Input For more information about the clock sources, see “Clock Sources”

on page 73.

• The Trigger Out marks every start of the repetitive data pattern, as long as no frequency divider has been applied.

See also “Trigger Out” on page 75.

82 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Jitter Modulation Using the Agilent 81133A/81134A Pulse Generator

Jitter Modulation

The external source for jitter modulation is applied to the delay control input. Jitter modulation can be turned on and off individually for each channel. Either one of two fixed sensitivities can be selected.

The source for the jitter modulation input is assumed to be either a function generator or an arbitrary waveform generator. Both have the capability of setting the output levels. Therefore, the instrument has no

capabilities of adjusting the jitter modulation input.

Saving and Recalling Settings

For permanently saving the instrument setting, nine save/recall registers are provided.

All parameters are saved, including the data. User interface specifics, such as the current visible page, are not saved.

When the instrument is turned on, the last used setting is restored.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 83

Using the Agilent 81133A/81134A Pulse Generator Saving and Recalling Settings

84 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Updating the Firmware

Firmware updates of the instrument can be done by using one of the supported programming interfaces.

Updates and patches are available on the Agilent Web at:

http://www.agilent.com/find/pulse_generator

They are applied by downloading the update/patch from the web (single executable) and running it.

The connection path to the instrument is queried for the time the executable is run. A warning is issued if a new firmware revision would be overwritten by an older one. Nevertheless, this down-grade can be forced.

Updating the Firmware

Prerequisites

The instrument must be connected to a PC through one of the supported remote programming interfaces. The operating system running on the PC must be either Windows 98, Windows NT or Windows 2000.

An upgrade/patch always includes all parts of the software (that is firmware and BIOS).

For more information, please refer to the Programming Guide delivered on the product CD.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 85

Updating the Firmware

86 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Troubleshooting

This chapter provides basic troubleshooting tips that you can use if the instrument is not performing as expected.

Instrument out of Specs

The specification is valid within +/- 10 degree Celsius after running Selfcalibration. If the operating temperature changes, you can run the SelfCal function. SelfCal is started by pressing the SelfCal softkey on the Main page.

Outputs Disabled

The outputs are automatically turned off to protect the instrument when they are not terminated correctly.

In the user interface, check the termination mode and voltage for the output line in question, and make sure that the actual termination matches this.

Unlock LED Lit

The Unlock LED lights up when an external clock source is used, and the set frequency/period of the clock source does not match the actual signal.

In this case, you can either enter the frequency of the clock source manually, or press Measure to cause the instrument to measure the frequency of the clock source.

Display is Black

If the display is black, but you are sure the instrument is running, it is possible that the display was shut off remotely.

To reactivate the display, press any key. As a last resort, you can power the instrument down and back up. Before you do this, though, make sure that no one is carrying out remote tests using the instrument.

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 87

Troubleshooting

Instrument does not Respond

If the instrument does not respond when you press a button, it is possible that it is being used remotely.

To reactivate the instrument, press the Local key (if this is available). As a last resort, you can power the instrument down and back up. Before you do this, though, make sure that no one is carrying out remote tests using the instrument.

Instrument not Operable via LAN

If the instrument cannot be programmed via LAN, make sure that you have installed the latest Agilent I/O library on your computer.

Visit the Agilent web site for the newest version.

88 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Index

advanced signals

setup 27

Aux page 67

benefits 14

Burst (instrument mode) 69

burst signal

example 46

channel page

pages

channel 66

cleaning recommendations 11

clock

timing 77

Clock Input 16

clock jitter 14

clock signal

example 28

Clock Source

Ext. Direct 73 External 73 External 10 MHz Reference 73 Int. Direct 73 Internal 73

clock sources 73

Config page

pages

Config 67

data 14

Data (pattern mode) 70

Data page 67

data pattern

example 40 timing 79

declaration of conformity 12

Delay Control Input 16

delay modulation range 14

delay range 14

entering new values 23

environmental conditions

requirements 7

error messages 87

example

burst signal 46 clock signal 28 data pattern 40 pulse signal 36 repetitive burst signal 52 signals for stressed eye diagram measurement 58

example for jitter modulation 60

example for setting the variable crossover 60

Ext. Direct (Clock Source) 73

External (Clock Source) 73

External 10 MHz Reference (Clock Source) 73

frequency range 14

front panel 15

front panel inputs 16

front panel outputs 16

generated signals

timings 76

generic signal

setup 27

GPIB connector 18

graphical user interface 15

pages 66

ground the instrument 8

initial inspection 9

inputs 16

Clock Input 16 Delay Control Input 16 Start Input 16

instrument cover removing 8

instrument mode

Pulse/Pattern 68

instrument modes 68

Burst 69 Repetitive Burst 69

instrument panel 66

Int. Direct (Clock Source) 73

Internal (Clock Source) 73

internal PLL 74

jitter modulation 83

example 60

key features 14

clock jitter 14 data 14 delay modulation range 14 delay range 14 frequency range 14 PRBS 14 transition times 14 voltage amplitude 14

LAN connector 18

Main page 66

modes

instrument 68 pattern 70 signal 71 trigger output 75

modifying of units 24

modifying of values 24

navigation

through pages 20 through parameters 21

navigation knob 15

NRZ 71

number field

changing 23

numeric keys 15

Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002 89

Index

outputs 16

inverted Output 16 normal Output 16 Trigger Output 16

pages

Aux 67 Data 67 graphical user interface 66 Main 66 scrolling 19

pages overview 20

parameter

selecting 21

parameter values

changing 19

pattern mode

Data 70 PRBS 70 Pulse 70 Square 70

pattern modes 70

PRBS 14

timing 80

PRBS (pattern mode) 70

Pulse (pattern mode) 70

pulse signal

example 36

Pulse/Pattern (instrument mode) 68

pulses

timing 78

R1 71

rear panel 18

recalling settings 83

repetitive burst

timing 82

Repetitive Burst (instrument mode) 69

repetitive burst signal

example 52

requirements

cleaning 11 environmental conditions 7 power supply 8 safety 7 ventilation 10

RZ 71

safety requirements 7

saving settings 83

scope

setup 63

setting up

advanced signals 27 generic signals 27

signal generation

conbining parameters 68

signal mode

NRZ 71 R1 71 RZ 71

signal modes 71

signals for stressed eye diagram measurement

example 58

single digits

changing 25

softkeys 15

Square (pattern mode) 70

Start Input 16

start mode 75

tab keys 15

timing

clock 77 data pattern 79 PRBS 80 pulses 78 repetitive burst 82 triggered burst 81

transition times 14

Trigger Out

modes 75

Trigger Output 16

trigger output

levels 76

trigger output levels 76

triggered burst

timing 81

troubleshooting 87

units

modifying 24

USB connector 18

values

entering 23 modifying 24

variable crossover 72

variable crossover setup

example 60

ventilation requirements 10

voltage amplitude 14

waveform generator

setup 63

90 Agilent 81133A/81134A Pulse Generator User’s Guide, August 2002

Agilent 81134A, 81133A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Safety Requirements

Safety Summary

Environmental Conditions

Before Applying Power

Ground the Instrument

Do not Operate in an Explosive Atmosphere

Do not Remove the Instrument Cover

Initial Inspection

Power Requirements

Performance Requirements

Ventilation Requirements

Cleaning Recommendation

Declaration of Conformity

Introduction to the Agilent 81133A/81134A Pulse Generator

Benefits and Key Features

Front Panel Overview

Input and Outputs

Rear Panel Overview

Operating the Agilent 81133A/81134A Pulse Generator

Navigation through the Pages

How to Navigate through the Parameters at one Page

How to Select a Parameter from a Selection List

How to Change a Number Field

Setting Up Generic and Advanced Signals

Setting Up a Clock Signal

Using the Graphical User Interface

Using the Remote Programming Interfaces

Setting Up a Pulse Signal

Using the Graphical User Interface

Using the Remote Programming Interfaces

Setting Up a Data Pattern

Using the Graphical User Interface

Using the Remote Programming Interfaces

Setting Up a Burst Signal

Using the Graphical User Interface

Using the Remote Programming Interfaces

Setting Up a Repetitive Burst Signal

Using the Graphical User Interface

Using the Remote Programming Interfaces

Setting Up Signals for a Stressed Eye Diagram Measurement

Connecting the Instruments

Setting Up the 81134A by Using the Graphical User Interface

Setting Up the 33250A Waveform Generator

Viewing the Eye Diagram on the 86100 DCA

Play with the Settings

Using the Agilent 81133A/81134A Pulse Generator

Pages of the User Interface

Combining Parameters for Signal Generation

Instrument Modes

Pattern Modes

Signal Modes

Variable Crossover

Clock Sources

Start Mode

Trigger Out

Timing of Generated Signals

Clock

Pulses

Data Pattern

PRBS

Started Burst

Repetitive Burst

Jitter Modulation

Saving and Recalling Settings

Updating the Firmware

Troubleshooting

Index