Agilent 81104A Specifications Sheet

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Reference Guide

HP 81110A 165/330 MHz, HP 81104A 80 MHz Pulse/Pattern Generators

Front Panel Display and Softkeys

Reference Guide

HP 81110A 165/330 MHz,

HP 81104A 80 MHz

Pulse/Pattern Generators

HP Part No. 81110-91010

Printed in Germany June 1998

Edition 1.0, E0698

NOTICE

 1998 Hewlett-Packard GmbH.

Herrenberger Str. 110-140 71034 Boeblingen Federal Republic of Germany

Safety

For safety informat ion, please refer to the Installation and Safety Requirements chapter in the HP 81110A and HP 81104A Quick Start Guide.

Warranty This Hewlett-Packard produ ct has a warr anty aga inst de fects in materi al and workmanship for a peri od of one year f rom date of ship ment. During the warranty period, Hewlett-Pa ckard Company will , at its optio n, 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 Hewlett-Packard. The Buyer shall pay Hewlett-Packard’s round-trip travel expenses . For pro ducts re turned t o Hewlett- Packard f or warranty service, the Buyer shall prepay shipping charges to HewlettPackard and Hewlett-Packard shall pay shipping charges to return the product to the Buyer. However, the Buyer sh all pay all shipping ch arge s, duties and taxes for products returned to Hewlett-Packard from another country. Hewlett-Packard warrants that it s software and firmware designated by Hewlett-Packard for use with an instrument will execute its programming instructions when properly installed on that instrument. Hewlett-Packard does not warrant that the operation of the instrument software, or firmware, will be uninterrupted or error free.

6 NOTICE HP 81110/04A Quick Start

NOTICE

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 environmen tal speci ficati ons for the product , or impro per site preparation or maintenance. No other warranty is exp ressed or im plied. Hewlett -Packa rd spe cifical ly disclaims the impl ied warr antie s of mer chanta bilit y and fitnes s for a par ticular purpose.

Exclusive R emedies The remedies supplied are the Buyer’s sole and exclusive remedies. Hewlett-Packard shall not be liable for any direct, indirect, special, incidental, or consequen tial damage s, whethe r based on contract , tort or any other legal theory.

Assistance

Product maintenance agreements and other customer assistance agreements are available for Hewlett-Packard products. For any assistance, contact your nearest Hewlett-Packard Sales Office.

Certification

Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment. Hewlett-Packard further certifies that its calibration measurements are traceable to the United States Institute of Standards an d Technology , to the exte nt allowed by t he Institu te’s calibrating facility, and to the calibration facilities of other International Standards Organization members.

HP 81110/04A Quick Start NOTICE 7

About this book

This reference guide gives you in-depth operating hints and a list of the device commands to program the instrument with all possible modules installed. In addition in the specification chapter the valid instrument specification are provided. The information is valid for HP 81104A and HP 81110A. Where required the differences are explicitly mentioned. Possible configurations are:

Output Module for HP 81104A Mainframe:

Module Description Max Quantity

HP 81105A 10V/ max.80 MHz Output Channel 2

Output Modules for HP 81110A Mainframe:

Module Description Max Quantity

HP 81111A 10V/ max. 165 MHz Output Channel 2

Module Description Max Quantity

HP 81112A 3.8V/ max. 330 MHz Output Ch annel 2

As standard the instruments are equipped with one output channel, so, some of the described features will not be available.

8 About this book HP 81110/04 A Quick Start

Installing

Please refer to the Quick Start Guide, p/n 81110-91010.

Introduction

Please refer to the Quick Start Guide, p/n 81110-91010.

Getting Started

Please refer to the Quick Start Guide, p/n 81110-91010.

Operating Reference

A reference for using the front panel parameter screens to operate the instrument with diagrams of signal outputs in different operating modes.

Programming Reference

A SCPI reference for programming the instrument via HI-IB.

Specifications

The valid specifications of the HP 81110A and HP 81104A.

About this book

HP 81110/04 A Quick Start About this book 9

About this book

10 About this book HP 81110/04A Quick Start

Table of Contents

NOTICE ...................................................................................................... 6

About this book ........................................................................................... 8

Output Module for HP 81104A Mainframe: ................................................ 8

Output Modules for HP 81110A Mainframe: .............................................. 8

Table of Contents ..................................................................................... 11

Chapter 1 Operating Reference

Introduction .............................................................................................. 22

Using Help ................................................................................................. 23

Parameter Help |ON FIELD| .......................... 23

Concept Help |CONCEPT| ............................ 23

Serial Numbers and Software Revision |SERIAL #| .......... 23

Warning Help |WARNINGS| ........................... 24

Error Queue |ERROR QU| ............................ 24

Table of Contents

Front Panel Controls ................................................................................ 25

Softkeys and ............................................................................................. 25

Key ..................................................... ...... ...... ........................................... 26

Key ..................................................... ...... ...... ........................................... 27

DATA ENTRY .......................................................................................... 28

CURSOR/DIGIT ........................................................................................ 28

MODIFY knob ........................................................................................... 28

Connectors .................................................................................................. 29

HP 81110/04A Quick Start Table of Contents 11

Table of Contents

EXT INPUT.............................................. ..... ...... ....................................... 29

TRIGGER OUT.......................................................................................... 29

STROBE OUT............................................................................................ 30

Regular User Interface Tasks ................................................................. 31

Switching Outputs ON/OFF ...................... 31

Modifying the Value of a Parameter .......................................................... 31

Modifying the Format of a Parameter ........................................................ 32

Toggling Graphics and Text Mode ............................................................ 33

|MODE/TRG| Screen ............................................................................... 34

General Information.................................................................................... 36

CONTINUOUS PULSES Mode ................................................................ 37

CONTINUOUS BURST Mode ................................................................... 38

CONTINUOUS PATTERN Mode .............................................................. 39

TRIGGERED PULSES Mode ................................................................. 41

TRIGGERED BURST Mode ................................................................... 43

TRIGGERED PATTERN Mode ................................................................ 45

GATED PULSES Mode ............................................................................ 48

GATED BURST Mode ............................................................................... 50

GATED PATTERN Mode .......................................................................... 52

EXT WIDTH Mode .................................................................................... 53

|TIMING| screen ...................................................................................... 54

Pulse-period Parameter ........................................................ ...... ..... ........... 55

Pulse Delay Parameter ............................................................................... 56

Delay .......................................... 56

Delay% ......................................... 56

Phase .......................................... 56

Pulse Width Parameter ............................................................................... 57

Width .......................................... 57

12 Table of Contents HP 81110/04A Quick Start

Table of Contents

DutyCyc ........................................ 57

Pulse Leading-edge Parameter ................................................................... 59

LeadEd ......................................... 59

LeadEd% ........................................ 59

Pulse Trailing-edge Parameter ................................................................... 60

=LeadE ......................................... 60

TrailEd ........................................ 60

TrailE% ........................................ 60

|LEVELS| screen ...................................................................................... 62

Normal/Complmnt Parameter ............................................................... 63

Seperate/Added Outputs Parameter ................................................... 63

Separate Outputs ............................... 63

Added at Output 1 .............................. 63

Offset, Amplit, High, Low Level Parameters ........................... 65

Set TTL ........................................ 65

High-Low ....................................... 65

Offs-Ampl ...................................... 65

Set ECL ........................................ 66

mv V mA A Voltage/Current Mode ......................................................... 66

50 Ω into Output Source Impedance Parameter .................................. 66

50.0Ω Load Impedance Parameter .......................................................... 66

Output Voltage and Power Protection ........................................................ 67

HP 81110/04A Quick Start Table of Contents 13

Table of Contents

|OUTPUT| Screens ................................................................................... 68

Pulse-period Parameter ........................................................ ...... ..... ........... 69

Normal/Complmnt Parameter .............................................................. 69

Pulse Delay Parameter ............................................................................... 69

Pulse Width Parameter ............................................................................... 69

Pulse Leading-edge Parameter .................................................................. 69

Pulse Trailing-edge Parameter ................................................................... 70

Separate/Added Outputs Parameter ................................................... 70

Offset, Amplit, High, Low Level Parameters ........................... 70

mv, V, mA, A Voltage/Current Mode ................................................. 70

50Ω into OUTPUT Source Impedance Parameter .............................. 70

50.0Ω Load Impedance Parameter .......................................................... 71

Output Voltage and Power Protection ....................................................... 71

|PATTERN| Screen .................................................................................. 72

UPDATE Parameter .................................................................................... 73

UPDATE (Upd Cont) .............................. 73

NO UPD (Upd Once) .............................. 73

Addr Parameter ......................................................................................... 73

Last Parameter.......................................................................................... 73

Bit-Editing Window ................................................................................... 73

RZ/NRZ Data Format ................................................................................. 74

OUTPUTS (CH1,CH2) and STROBE OUT (STRB)................................ 74

CH1 CH2 BOTH STRB Block Editing Functions ................................... 75

Some Hints on Editing Pattern Data .......................................................... 79

Example ...................................................................................................... 79

|LIMITS| screen ....................................................................................... 81

|TRG-LEV| ............................................ ..... ...... ...... ..... ............................ 83

EXT-IN Parameter .................................................................................... 83

Set TTL ........................................ 83

14 Table of Contents HP 81110/04A Quick Start

Table of Contents

Set ECL ........................................ 84

Voltage ........................................ 84

50Ω/10kΩ EXT INPUT Impedance Parameter ......................................... 84

CLK-IN Parameter .................................................................................... 84

50Ω/10kΩ CLK IN Impedance Parameter ............................................. 84

TRIGGER-OUT TRIGGER OUT Level Parameter ................................... 84

STROBE-OUT STROBE OUT Level Parameter ....................................... 85

|MEMCARD| Screen .......................................... ...... ................................ 86

Dir Path Current Directory Parameter .................................................. 87

To change directory..................................................................................... 88

Filename Parameter ............................................................................... 89

Memory Card Operations ........................................................................... 89

ReadCard ....................................... 89

Recall ......................................... 89

Store ............................................................................................................ 90

To modify the filename............................................................................... 90

Store All ...................................... 91

To modify the filename............................................................................... 91

Delete ......................................... 92

Format ......................................... 92

|CONFIG| Screen ...................................................................................... 93

HP-IB Address ................................. 93

Perform Operation Selftest ......................... 94

Perform Operation Calibrate ......................... 94

Parameter Grouping Group Params by ................. 94

TIMING/LEVELS .................................. 94

OUTPUT 1/2 ..................................... 95

PLL Reference............................................................................................. 95

Internal ....................................... 95

CLK-IN ......................................... 96

HP 81110/04A Quick Start Table of Contents 15

Table of Contents

Warnings and Errors ............................................................................... 97

Warnings .................................................................................................... 97

Errors ......................................................................................................... 98

AUTOSET ................................................................................................. 99

An Example of Warning and Error Reporting ........................................... 99

Chapter 2 Programming Reference

Introduction ............................................................................................ 104

Programming Recommendations ............................................................. 104

Common Command Summary ............................................................. 107

SCPI Command Summary ................................................................... 108

Default Values, standard settings ......................................................... 114

Programming the Instrument Trigger Modes ................................... 120

CONTINUOUS .................................... 121

TRIGGERED ..................................... 121

GATED ......................................... 122

EXT WIDTH ..................................... 122

PULSES ........................................ 122

BURST of ...................................... 123

PATTERN ....................................... 123

SCPI Instrument Command List ........................................................ 124

Status Model ........................................................................................... 268

Condition Register.................................................................................... 269

Transition Filters....................................................................................... 269

Event Register........................................................................................... 269

Enable register .......................................................................................... 270

Status Byte................................................................................................ 271

16 Table of Contents HP 81110/04A Quick Start

Standard Event Status Group.................................................................... 272

OPERation Status Group........................................................................... 273

QUEStionable Status Group.................................................................. 27477

Chapter 3 Specifications

Introduction ............................................................................................ 278

Specifications .......................................................................................... 278

General .................................................................................................... 279

Environmental Conditions......................................................................... 279

Safety......................................................................................................... 279

Power requirements................................................................................... 279

Maximum Dimensions (H x W x D)......................................................... 279

Weight....................................................................................................... 280

Recalibration period.................................................................................. 280

Warranty.................................................................................................... 280

Acoustic Noise Emission .......................................................................... 280

Table of Contents

Declaration of Conformity ..................................................................... 281

HP 81110A and HP 81104A Pulse Generator Mainframes ................ 282

Timing ...................................................................................................... 282

Period ........................................................................................................ 282

PLL Ref In/CLK In .................................................................................. 283

Clock Input/ PLL Reference Input............................................................ 283

Phase Locked Loop (PLL)........................................................................ 284

External Clock........................................................................................... 284

Configuration ........................................................................................... 285

Channel Addition ..................................................................................... 285

Output Modes ........................................................................................... 285

Pulses Mode .............................................................................................. 285

HP 81110/04A Quick Start Table of Contents 17

Table of Contents

Burst Mode ............................................................................................... 285

Pattern Mode....................................... ...................................................... 286

Trigger Modes .......................................................................................... 286

Continuous................................................................................................ 286

External Triggered.................................................................................... 286

External Gated .......................................................................................... 287

External Width.......................................................................................... 287

External Input .......................................................................................... 287

Strobe Output ........................................................................................... 288

Trigger Output ......................................................................................... 288

Typical Delays ......................................................................................... 289

Human Interface ...................................................................................... 290

Overprogramming..................................................................................... 290

Warnings and Errors................................................................................. 290

Memory .................................................................................................... 290

Non-volatile memory................................................................................ 290

Memory-card ............................................................................................ 290

Remote Control ........................................................................................ 291

Function Code:.......................................................................................... 291

Programming times:.................................................................................. 291

Specifications for Output Channel Types ............................................ 292

Timing Parameters ................................................................................... 292

Common specifications............................................................................. 292

Width ........................................................................................................ 293

Delay......................................................................................................... 293

Double Pulse Delay .................................................................................. 294

Transition Times....................................................................................... 294

Level Parameters ...................................................................................... 295

18 Table of Contents HP 81110/04A Quick Start

Table of Contents

External Load compensation..................................................................... 296

Level Specifications ................................................................................. 296

Levels in Channel Addition ...................................................................... 297

Pulse Performance .................................................................................... 297

Pulse Parameter Definitions .................................................................. 298

Pulse Period: ..............................................................................................299

Trigger Delay ............................................................................................ 299

Pulse Width:.............................................................................................. 299

Pulse Delay: ...............................................................................................300

Double Pulse Delay:.................................................................................. 300

Interchannel Delay (Skew) ........................................................................300

Transition Time:........................................................................................ 300

Linearity:................................................................................................... 301

Jitter: .......................................................................................................... 301

Stability: .................................................................................................... 301

Pulse Levels: ............................................................................................. 302

Preshoot, Overshoot, Ringing: .................................................................. 303

Settling Time:............................................................................................ 304

Repeatability: ............................................................................................ 304

Index ........................................................................................................ 305

Front Panel Controls ................................................................................. 313

HP 81110/04A Quick Start Table of Contents 19

Table of Contents

20 Table of Contents HP 81110/04A Quick Start

Chapter 1

1Operating Reference

HP 81110/04A Reference Operating Reference 21

Operating Reference

Introduction

This chapter is a reference guide for operating the instrument using the frontpanel contr ols. It co ntains in format ion on using the key and the main frontpanel con trols, follow ed by a reference section for

each of the parameter s cre ens selected by the softkeys under the display:

• Using Help, see page 23.

• Front Panel Controls, see page 25.

• Regular User Interface Tasks, see page 31.

|MODE/TRG| Screen, see page 34.

•

|TIMING| Screen, see page 54.

•

|LEVELS| Screen, see page 62.

•

|OUTPUT| Screen, see page 68.

•

|PATTERN| Screen, see page 72.

•

|LIMITS| Screen, see page 81.

•

|TRG-LEV| Screen, see page 83.

•

|MEMCARD| Screen, see page 86.

•

|CONFIG| Screen, see page 93.

•

• Warning and Errors Screen, see page 97.

22 Operating Reference HP 81110/04A Reference

Operating Reference

Using Help

Parameter Help |ON FIELD|

If there are no Warnings or Errors (Refer to “Warnings and Errors” on page 97.) press the key at any time to obtain information about the current location of the parameter cursor. The help infor mat ion

gives a short description of the parameter or setting options and the SCPI command(s) syntax for programming the parameter or setting. Use the MODIFY knob or the CURSOR keys to scroll through the help information if there is more than one screen available.

|EXIT HELP| or again to return to normal operation.

Press

Concept Help |CONCEPT|

If there are no Warnings or Errors (Refer to “Warnings and Errors” on page 97.) press the key followed by the to view a short description of the instrument.

|CONCEPT| softkey

Serial Numbers and Software Revision |SERIAL #|

If there are no Warnings or Errors (Refer to “Warnings and Errors” on page 97.) press the key followed by the softkey to see a list of the installed boards and their serial numbers fol-

lowed by the software revision code of the instrument's firmware.

HP 81110/04A Reference Operating Reference 23

|SERIAL #|

Operating Reference

Using Help

Warning Help |WARNINGS|

If a Warning condition occurs, indicated by a flashing W, press

to see a list of the current warning messages.

Error Queue |ERROR QU|

If an Error condition occurs, indicated by a flashing E, press

to see a list of the current error messages.

24 Operating Reference HP 81110/04A Reference

Front Panel Controls

Figure 1 Front Panel Display and Softkeys

Operating Reference

Front Panel Controls

Softkeys and

There are four sof tkeys undernea th the displ ay . Use the soft keys to selec t the parameter sc reens. The names of th e para meter scr eens a re displ ayed

above the softkeys. Press to display alternative parameter screens.

HP 81110/04A Reference Operating Reference 25

Operating Reference

Front Panel Controls

Figure 2 Front Panel Controls

Key

Press to enter SHIFT-mode. A flashing S indicates that you are in SHIFT-mode. The extra functions available in SHIFT-mode are

shown in blue above the keys.

NOTE: Note that when using the DIGIT keys (CURSOR keys in SHIFT-

mode) you must press again to exit from SHIFT-

mode. When the instrument is programmed via the HP-IB it enters remote mode and disables the frontpanel controls. Press the key to return to LOCAL operating mode.

26 Operating Reference HP 81110/04A Reference

Operating Reference

Front Panel Controls

Key

Press to obtain help on the currently selected parameter/setting. Press AUTOSET ( ) to set the instrument to a valid setting based on the actual period setting.

Key

Press to store the current instrument setting in one of 9 memories. Press RECALL( ) to recall a co mplete instrument setting from one of t he 9 memor ies, or to r ecal l the default ins tru-

ment settings from memory 0.

Key

Use the key to generate a manual trigger or gate sign al when the instrument is run ning in

MAN key as the selected trigger/gate source.

HP 81110/04A Reference Operating Reference 27

TRIGGERED or GATED trigger mode with the

Operating Reference

Front Panel Controls

DATA ENTRY

Use the DATA ENTRY keys to quickly enter a parameter value into the Modify Window. Enter the numeric value followed by the appropriate

unit key, or press where appropriate. During the data entry you can press CANCEL ( ) to cancel the entry or use the cur-

sor left to backspace the digit-cursor.

Use the DATA ENTRY functions indicated in blue above the keys to quickly select a particular parameter.

CURSOR/DIGIT

Use the CURSOR keys to move t he entry field on the para meter scre ens. The entry field highlights the currently selected parameter, parameter format or mode which is then displayed in the Modify Window at the right hand side of the display.

In SHIFT-mode the CURSOR keys move the digit-cursor within the Modify Window and vernier the value of the selected digit.

MODIFY knob

Use the knob to modify the selected parameter in the Modify Window, or to select a setting from the list displayed in the Modify window.

On the

28 Operating Reference HP 81110/04A Reference

|PATTERN| screen when the cursor is located in the bit-editing

Operating Reference

Front Panel Controls

window you can use the knob to scroll through the pattern data. Modify the data wi th the DATA ENTRY keys.

When is displayed, make the s elect ion an d press the

key to start a function.

Connectors

EXT INPUT

You can use an external signal connected to the EXT INPUT to trigger the instrument by selecting

EXT-IN

on the |MODE/TRG| screen.

You can use an external signal connected to the EXT INPUT to gate (enable/disable) the instrument by selecting

: EXT-IN on the |MODE/TRG| screen.

You can use an external si gnal c onnecte d to t he EXT I NPUT to gener ate leading and trailing edges by selecting

EXT-IN

on the |MODE/TRG| screen.

TRIGGERED mode and Triggered by

GATED mode and Gated

EXT_WIDTH mode and Width:

TRIGGER OUT

The TRIGGER OUT signal generates an output pulse for each pulseperiod generated by the instrument.

You can set the output levels to TTL or ECL on the

HP 81110/04A Reference Operating Reference 29

|TRG-LEV| screen.

Operating Reference

Front Panel Controls

STROBE OUT

In PULSES mode, the STROBE OUT signal is not used.

In each burst of pulses g enerat ed. The r ising edge of the STROBE si gnal i s synchroni zed to the start of the first pulse-period in a burs t, the falling edge is synchroni zed to the start o f the las t puls e-perio d in the bu rst. ( see Figure 5 on page 38 for example)

In the pulses are generated. ( Figure 6 on page 39 for example)

Continuous Triggered T T, S T, S

Gated T T, S T, S Ext. Width Tn/an/a

BURST mode, the STROBE OUT signal marks the start and end of

PATTERN mode, the STROBE OUT signal is bit-programmable on

|PATTERN| page. The pulse-width is not programmable, only NRZ

Table 1: Trigger and Strobe Availability

Pulse Mode Burst Mode Pattern Mode

T, S

T = Trigger Out

S = Strobe Out

You can set the output level to TTL or ECL on the |TRG/LEV| screen.

30 Operating Reference HP 81110/04A Reference

Operating Reference

Regular User Interface Tasks

Switching Outputs ON/OFF

Switch the OUTPUT signa l on and off in the |LEVELS| and |TIMING| screens.

NOTE: You can use the short-cut keys for

output 1 or for output 2 to quickly toggle the OUTPUTS on and off.

Modifying the Value of a Parameter

You can adjust a parameter value in graphics or text mode. Example screens are shown in the following subsections for graphics mode only.

1 Move the parameter cursor onto the value you want to modify using

the CURSOR keys.

2 Modify the value with the knob.

NOTE: Note that when you use the knob, the parameter range can be

restricted to prevent any warnings or errors occurring (refer to

“Warnings and Errors” on page 97.). Overprogramming - If you want to set a value outside this temporary range, use the DATA

HP 81110/04A Reference Operating Reference 31

Operating Reference

Regular User Interface T asks

ENTRY keys or press and turn the knob. If you try to

set a value outside the absolute maximum or minimum limits, the

maximum or minimum limit will be set.

Modifying the Format of a Parameter

NOTE: You can only modify the format of a parameter in text mode

Many parameters can be displayed in different formats, for example the pulse period can be displayed as a period or frequency. To modify the format of a para meter:

1 If you are in GRAPHics mode, select TEXT mode wi th

2 Move the cursor onto the parameter name. 3 Use the MODIFY knob to select a parameter format from the list in

the MODIFY window.

32 Operating Reference HP 81110/04A Reference

Operating Reference

Regular User Interface Tasks

Toggling Graphics and Text Mode

The TIMING, LEVELS and PATTERN screens can be toggled between graphic and text mode by pressing the corresponding softkey or the

keys.

NOTE: Note that in graphi cs mod e you can only adjust the values of each

parameter, not the parameter format. If you want to change the format of a pa rameter, for example

, you must be in text mode to select the parameter name with

Low

the cursor.

Offset/Amplit to High/

HP 81110/04A Reference Operating Reference 33

Operating Reference

|MODE/TRG| Screen

Figure 3 Typical |MODE/TRG| screen

Use the |MODE/TRG| page to set up the overall operating modes of the instrument. For summaries of main settings available on screen see Table 2. The numbers in Figure 2 relate to the numbers in Table 1.

34 Operating Reference HP 81110/04A Reference

Operating Reference

|MODE/TRG| Screen

Table 2: |MODE/TRG| Summary of modes

1 Trigger Mode

2 Pulse Mode PULSES BURST PATTERN PULSES BURST PATTERN PULSES BURST PATTERN

3 Pulse Type Single/Double RZ/NRZ Single/Double RZ/NRZ Single/Double RZ/NRZ

4 Length 2-65536

5 Period Source

6 Arming Source

TRIGGER OUT

STROBE OUT

1 2

CONTINUOUS TRIGGERED GATED EXT

int Osc int PLL CLK-IN

Not Used

↑on 1st ↓on last

2-16384

Programmable

MANKey EXT INPUT

Not Used

2-65536

int Osc int PLL CLK-IN

MANKey EXT INPUT

PLL

Marks each pulse-period generated

↑on1st ↓on last

2-16384

Program mable

int Osc int PLL CLK-IN

MANKey EXT INPUT

Not Used

2-65536

↑on 1st ↓on last

Set Last on |PATTERN| screen PLL cannot be used as Pulse and Arming source at the same time

2-16384

Program mable

T o c hang e a se ttin g, move t he ent ry fi eld o nto th e set ting u sing t he CURSOR keys and modify the setting with the MODIFY knob.

The following sections explain the mode combinations in more detail.

WIDTH

MANKey EXT INPUT

Not Used

HP 81110/04A Reference Operating Reference 35

Operating Reference

|MODE/TRG| Screen

General Information

NOTE: For intrinsic fixed delays refer to Chapter 3, Specifications, for

typical values

SinglePulses

DoublePulses

Single pulse per period, delay parameter sets delay to leading-edge from start of period.

Double pulse per period, double-delay parameter sets delay between leading-edges of pulses.

• Select pulse-period source (See 5 in Figure 3 on page 34)

• As the PLL clock is fitt ed, select the pulse-p eriod source (See 5 in Fig-

ure 3 on page 34):

• internal Osc (VFO)

• internal PLL (Higher accuracy)

• ext CLK-IN (External signal), synchronize t o rising or falling edge.

Data Output Formats

NRZ

A single pulse is generated in each pulse-period with data value 1, no pulse is generated for data value 0.

A leading-e dge is generated for a 0→1 data transition, a trailing-ed ge is gener ated for a 1 →0 data transition.

36 Operating Reference HP 81110/04A Reference

|MODE/TRG| Screen

CONTINUOUS PULSES Mode

Figure 4 Timing Diagram: CONTINUOUS PULSES

Operating Reference

• Pulse-periods are generated continuously

• Select between Single and Double-pulses per pulse-period for each

OUTPUT (See 3 in Figure 3 on page 34)

• As the PLL clock is fitte d, select the pulse-p eriod source (See 5 in Fig-

ure 3 on page 34)

• internal Osc (VFO)

• internal PLL (Higher accuracy)

• ext CLK-IN (External signal), synchronize t o rising or falling edge.

• TRIGGER OUT marks each pulse period.

• STROBE OUT not used in continuous pulse mode.

HP 81110/04A Reference Operating Reference 37

Operating Reference

|MODE/TRG| Screen

CONTINUOUS BURST Mode

Figure 5 Timing Diagram:CONTINUOUS BURST

• A burst of pulse-perio ds i s r epeated continuously. The OUTPUT sig-

nal is the same as PULSES mode, but the STROBE OUT no w marks the beginning and end of each burst.

• Select the number of pulse-periods per burst in the range 2 - 65536

(See 4 in Figure 3 on page 34).

• Select between Single and Double-pulses per pulse-period for each

OUTPUT (See 3 in Figure 3 on page 34).

• Select pulse-period source (see 5 in Figure 3 on page 34)

• TRIGGER OUT marks each pulse period.

• STROBE OUT rises at the start of the f irst pul se-period in a burst and

38 Operating Reference HP 81110/04A Reference

Operating Reference

|MODE/TRG| Screen

falls at the start of the last pulse-period.

CONTINUOUS PATTERN Mode

Figure 6 Timing Diagram: CONTINUOUS PATTERN

• A pattern of pulses is repeated continuously.

• Select between RZ and NRZ da ta pu lses for e ach OUTPUT ( See 3 in

Figure 3 on page 34):

RZ A si ngl e pul se i s ge n er a ted in e a ch p uls e-p eri o d w i th

data value 1, no pulse is generated for data value 0.

NRZ A leading-e dge is generated for a 0

HP 81110/04A Reference Operating Reference 39

→1 data transition,

Operating Reference

|MODE/TRG| Screen

• Select th e pulse-period source (S ee 5 in Figure 3 on page 34)

a trailing-edge is generated for a 1→0 data transition.

• Select the

|PATTERN| screen to set the pa ttern length in t he range 2-

16 384.

• Select the

|PATTERN| screen to program the data values for each

OUTPUT.

• TRIGGER OUT marks each pulse period.

• STROBE OUT is bit-programmable, like the OUTPUTS, in NRZ for-

mat on the

|PATTERN| screen.

40 Operating Reference HP 81110/04A Reference

|MODE/TRG| Screen

TRIGGERED PULSES Mode

Figure 7 Timing Diagram: TRIGGERED PULSES

Operating Reference

• Single pulse-peri ods are triggered by (Trg’d by) an active edge a t

the selected arming source (See 6 in Figure 3 on page 34)

• MAN Key on frontpanel, triggered by press or release or both.

• EXT INPUT (External signal) triggered by rising or falling or bo th edges (Figure 8 on page 42).

HP 81110/04A Reference Operating Reference 41

Operating Reference

|MODE/TRG| Screen

NOTE: The PLL cannot be selected as the arming source. Select

CONTINUOUS PULSES mode with the PLL as Period source to achieve the same result.

Figure 8 Timing Diagram: TRIGGERED PULSES Trg’d by Both

• Select between Single and Double-pulses per pulse-period for

each OUTPUT (See 3 in Figure 3 on page 34)

• TRIGGER OUT marks each pulse period.

• STROBE OUT not used in triggered pulses mode.

42 Operating Reference HP 81110/04A Reference

Operating Reference

|MODE/TRG| Screen

TRIGGERED BURST Mode

Figure 9 Timing Diagram: TRIGGERED BURST Pulse-Period: inter-

nal Osc

• A burst of pulse-periods is triggered by (Trg'd by) an active edge at

the selected arming source (See 6 in Figure 3 on page 34)

• MAN Key on frontpanel, triggered by press or release or both.

• EXT INPUT (External signal) triggered by rising or falling or both edg es.

• PLL (Internally triggered bursts), select the triggering period.

• Select the number of pulse-periods per burst in the range 2 - 65536

(See 4 in Figure 3 on page 34).

• Select between Single and Double-pulses per pulse-period for each

OUTPUT (See 3 in Figure 3 on page 34).

HP 81110/04A Reference Operating Reference 43

Operating Reference

|MODE/TRG| Screen

Figure 10 Timing Diagram: TRIGGERED BURST Pulse-Period:

internal PLL or CLK-IN

Select the pulse-period source. (See 5 in Figure 3 on page 34)

• internal Osc (start of burst synchronized to trigger, see Figure 9 on page 43)

• internal PLL (Higher accuracy, start of burst not synchronized to trigger, see Figure 10 on page 44)

• ext CLK-IN (External signal), pulse-period synchronized to rising or falling edge.

NOTE: You cannot use the PLL as both Pulse-Period source and Trg ’d by

(arming) sour ce at the same time.

• TRIGGER OUT marks each pulse period.

• STROBE OUT rises at the st art of the first pul se-period in a burst and

falls at the start of the last pulse-period.

44 Operating Reference HP 81110/04A Reference

Operating Reference

|MODE/TRG| Screen

TRIGGERED PATTERN Mode

Figure 11 Timing Diagram: TRIGGERED PATTERN Pulse-Period:

internal Osc

NOTE: For intrinsic fixed delays refer to Chapte r 3 for typical values.

• A pattern of pulses is triggered by (

Trg’d by) an active edge from

the selected arming source (See 6 in Figure 3 on page 34)

• MAN Key on frontpanel, triggered by press, release o r both.

• EXT INPUT (External signal) triggered by rising, falling or both edges .

• PLL (Internally triggered patterns), select th e triggering period.

• Select between RZ and NRZ data pulses for each OUTPUT

(See 3 in Figure 3 on page 34).

HP 81110/04A Reference Operating Reference 45

Operating Reference

|MODE/TRG| Screen

Figure 12 Timing Diagram: TRIGGERED PATTERN Pulse-Period:

Select the pulse-period source. (See 5 in Figure 3 on page 34)

internal PLL or CLK-IN

• internal Osc (start of burst synchronized to trigger, see Figure 9 on page 43)

• internal PLL (Higher accuracy, start of burst not synchronized to trigger, see Figure 10 on page 44)

• ext CLK-IN (External signal), pulse-period synchronized to rising or falling edge.

NOTE: You cannot use the PLL as both Pulse-Period source and Trg’d

by (arming) source at the same time.

• Select the

16384.

• Select the

OUTPUT.

46 Operating Reference HP 81110/04A Reference

|PATTERN| screen to set the pat tern le ngth in t he range 2 -

|PATTERN| screen to program the data values for each

Operating Reference

|MODE/TRG| Screen

• TRIGGER OUT marks each pulse period.

• STROBE OUT is bit-programmable, like the OUTPUTS, in NRZ format on the

|PATTERN| screen.

HP 81110/04A Reference Operating Reference 47

Operating Reference

|MODE/TRG| Screen

GATED PULSES Mode

Figure 13 Timing Diagram: GATED PULSES, Pulse-Period: in-

ternal Osc

• Pulse-periods ar e Gated by (ena bled by) an a ctive leve l at the se lect-

ed arming source (See

• MAN Key on frontpanel, gated while pressed or released or both.

• EXT INPUT (External signal) gated by high, low or both levels.

6 in Figure 3 on page 34)

• Select between Single and Double-pulses per pulse-period for each

OUTPUT (See 3 in Figure 3 on page 34).

48 Operating Reference HP 81110/04A Reference

Operating Reference

|MODE/TRG| Screen

Figure 14 Timing Diagram: GATED PULSES, Pulse-Period: PLL or

CLK-IN

Select the pulse-period source. (See 5 in Figure 3 on page 34)

• internal Osc (start of burst synchronized to trigger, see Figure 9 on page 43)

• internal PLL (Higher accuracy, start of burst not synchronized to trigger, see Figure 10 on page 44)

• ext CLK-IN (External signal), pulse-period synchronized to rising or falling edge.

• TRIGGER OUT marks each pulse period.

• STROBE OUT not used in gated pulse mode.

HP 81110/04A Reference Operating Reference 49

Operating Reference

|MODE/TRG| Screen

GATED BURST Mode

Figure 15 Timing Diagram: GATED BURST, Pulse-Period: internal

Osc

• Bursts of pulse- periods are Gated by (enabled by ) an active le vel at

the selected arming source (See 6 in Figure 3 on page 34):

• MAN Key on frontpanel , g a te d wh il e pres s ed o r released or both.

• EXT INPUT (External signal) gated while high or low or both.

• Select the number of pulse-periods per burst in the range 2-65536

(See 4 in Figure 3 on page 34).

• Select between Single and Double-pulses per pulse-period for each

OUTPUT (See 3 in Figure 3 on page 34).

50 Operating Reference HP 81110/04A Reference

Operating Reference

|MODE/TRG| Screen

Figure 16 Timing Diagram: GATED BURST Pulse-Period: internal

PLL or CLK-IN

Select the pulse-period source. (See 5 in Figure 3 on page 34)

• internal Osc (start of burst synchronized to trigger, see Figure 9 on page 43)

• internal PLL (Higher accuracy, start of burst not synchronized to trigger, see Figure 10 on page 44)

• ext CLK-IN (External signal), pulse-period synchronized to rising or falling edge.

• TRIGGER OUT marks each pulse period.

• STROBE OUT rises at the st art of the first pul se-period in a burst and

falls at the start of the last pulse-period.

HP 81110/04A Reference Operating Reference 51

Operating Reference

|MODE/TRG| Screen

GATED PATTERN Mode

• A pattern of pulses is Gated by (enabled by) an active level at the se-

• Select between RZ and NRZ da ta pu lses for e ach OUTPUT ( See 3 in

lected arming source (See 6 in Figure 3 on page 34).

• MAN Key on frontpanel, gated while presse d, released o r both.

• EXT INPUT (External signal) gated while high or low or both.

Figure 3 on page 34).

A single pulse is generated in each pulse-period with data value 1, no pulse is generated for data value 0.

NRZ

A leading-e dge is generated for a 0→1 data transition, a trailing-ed ge is gener ated for a 1 →0 data transition.

Select the pulse-period source. (See 5 in Figure 3 on page 34)

• internal Osc (start of burst synchronized to gate, see Figure 9 on page 43)

• internal PLL (Higher accuracy, start of burst not synchronized to gate, see Figure 10 on page 44)

• ext CLK-IN (External signal), pulse-period synchronized to rising or falling edge.

• Select the |PATTERN| screen to set the pattern lengt h in the range 2 -

16384.

• Select the

OUTPUT.

|PATTERN| screen to program the data values for each

52 Operating Reference HP 81110/04A Reference

Operating Reference

|MODE/TRG| Screen

• TRIGGER OUT marks each pulse period.

• STROBE OUT is bit-programmable, like the OUTPUTS, in NRZ format on the

EXT WIDTH Mode

|PATTERN| screen.

• The pulse-width is determined by an external signal:

• MAN Key Pressing the key generates a leading-edge, re-

leasing the key generates a trailing-edge.

• EXT-IN A rising-edge at the EXT INPUT generates a leading-edge, a

falling-edge at the EXT INPUT generates a trailing-edge.

• Set the threshold and impedance of the EXT INPUT on the

|TRG-LEV| screen.

• The period, delay, and width of the output pulse are not programmable in this mode as they are determined by the external signal.

HP 81110/04A Reference Operating Reference 53

Operating Reference

|TIMING| screen

The |TIMING| screen is only avai lable if you have two channels fitted to your HP 81110A or HP 81104A mainframe and you have selected

Group Params by: TIMING/LEVELS on the |CONFIG|

screen.

NOTE: On screens of the HP 81110A with HP 81112A 3.8V/330 Mhz

|TIMING| screen, text mode

Outputs the second status output is displayed for differential outputs. The trailing edge is always coupled to the leading edge. The leading edge has selectable values of 0.8 ns or 1.6 ns.

Figure 17 |TIMING| screen, graphics mode

Use the |TIMING| screen to view and control the pulse-timing parame-

54 Operating Reference HP 81110/04A Reference

Operating Reference

|TIMING| screen

ters for both channels on one screen. If you have a single channel instrument both the timing and level parameters are on the

|OUTPUT| screen,

see page 68.

NOTE: Note that in graphi cs mod e you can only adjust the values of each

parameter, not the parameter format. If you want to change the format of a parameter, for example

Width to DutyCycle, you

must be in text mode to select the parameter name with the cursor.

Pulse-period Parameter

Set the pulse-period as either Period or Frequency.

NOTE: You can select the pulse-period source on the |MODE/TRG|

screen. If you select the CLK IN connector as the pulse-period source,

the pulse-period/frequency is determined from the signal applied to CLK IN:

Meas Once

The external signal is measured once, Press to measure again

Meas Cont

The external signal is continuously measured.

HP 81110/04A Reference Operating Reference 55

Operating Reference

|TIMING| screen

Pulse Delay Parameter

Figure 18 |TIMING/OUTPUT| Timing parameter graphics,Delay

Delay the leading edge of the pulse within the pulse-period. There are three delay formats available, selectable in text mode:

Delay Delay

is the absolute delay from the start of a pulse-period to the start of the leading edge of the pulse. The absolute delay is inde pendent of the pulse period so the leading-edge does not move relative to the start of the period if you change the period.

Delay% Delay%

is the delay from th e st ar t of the pulse-period to the start of t he leading edge expressed as a percentage of the pulse period. In this format if you change the period, the leading-edge moves relative to the start of the period in order to maintain the percentage delay.

Phase Phase

the start of the leading edge. (360

is the phase del ay in degrees from the start of the pul se- per io d t o

° = 1 pulse-p eriod). In this format if

you change the period, the leadi ng-edge mov es relat ive to the s tart of the

56 Operating Reference HP 81110/04A Reference

Operating Reference

|TIMING| screen

period in order to maintain the phase delay.

Pulse Width Parameter

Figure 19 |TIMING/OUTPUT TIMING| parameter graphics,Width

Set the width of the output pulse. There are three width formats available, selectable in text mode.

Width Width

is the absolute pulse-width measured from start of the leading edge to start of the trailing edge. In this format the pulse-width is independent of changes in pulse period and delay.

DutyCyc DutyCycle

is the pulse-width measured from start of the leading edge to start of the trailing edge expressed as a percentage of the period. In this format if you adjust the period, the a bsolute width is adjusted to maintain the dutycycle.

HP 81110/04A Reference Operating Reference 57

Operating Reference

|TIMING| screen

NOTE: You cannot have the width for mat set to DutyCyc and t he leading/

trailing-edge format set to percentage of width (

TrailE%) at the same time.

TraDel

Figure 20 TIMING/OUTPUT Timing parameter graphics, Trailing De-

lay

LeadEd%/

TrailingDelay

is the absolute del ay fro m the s tart of the pulse- peri od

to the start of the trailing-edge. In this format the trai ling-edge remains fixed relative t o the start of the p ulse- period i f you adj ust the pulse-de lay (leading-edge delay) or the pulse period.

58 Operating Reference HP 81110/04A Reference

Operating Reference

|TIMING| screen

Pulse Leading-edge Parameter

Figure 21 |TIMING/OUTPUT| Timing parameter graphics, Leading-

edge

Set the leading -e dge tr ans it io n-t ime of the pulse, measured from 10% to 90% of pulse amplitude .

NOTE: The leading and trailing-edges are independently programmable

within certain ranges only, see Figure 48 on page 295. There are two formats available, selectable in text mode:

LeadEd

The absolute transit i on-t i me meas ure d f rom 10 % t o 90 % of p uls e ampl i tude. In this format the leading-edge is independent of the pulse-width.

LeadEd%

The absolute transition-time expressed as a percentage of pulse-width. In this format if you adjust the pulse-width, the transition-time is adjusted to maintain the edge-time as a percentage of the width.

HP 81110/04A Reference Operating Reference 59

Operating Reference

|TIMING| screen

NOTE: You cannot have the width for mat set to DutyCyc and t he leading/

trailing-edge format set to percentage of width (

TrailE%) at the same time.

LeadED%/

NOTE: The leading edge of a HP 81110A with HP 81112A 3.8 V/330

MHz outputs can be selected from 0.8 ns or 1.6 ns.

Pulse Trailing-edge P arameter

Set the trailing-edge transition-time of the pulse, measured from 10% to 90% of pulse amplitude .

NOTE: The leading and trailing-edges are independently programmable

within certain ranges only, see Figure 48 on page 295. There are three formats available, selectable in text mode:

=LeadE

The trailing-edge transition-time is coupled directly to the leading edge to maintain a symmetrical pulse.

TrailEd

The absolute transit i on-t i me meas ure d f rom 10 % t o 90 % of p uls e a mpl i tude. In this format the trailing-edge is independent of the leading-edge and pulse-width.

TrailE%

The trailing-edge transition-time expressed as a percentage of pulsewidth. In this format if you adjust the pulse-width, the transition-time is adjusted to maintain the edge-time as a percentage of the width.

60 Operating Reference HP 81110/04A Reference

Operating Reference

|TIMING| screen

NOTE: Note that you cannot have the width format set to DutyCyc and

the leading/trailing-edge format set to percentage of width(LeadEd%/TrailE%) at the same time.

NOTE: The trailing edge of HP 81110 A with HP 81112A 3.8 V/33 0 MHz

outputs is always coupled to the leading edge.

HP 81110/04A Reference Operating Reference 61

Operating Reference

|LEVELS| screen

The |LEVELS| screen is only available if you have two channels fitted to your HP 81110A or HP 81104A mainframe and you have selected

Group Params by: TIMING/LEVELS on the |CONFIG| screen.

Figure 22 |LEVELS| screen, text mode

Figure 23 |LEVELS| screen, graphics mode

Use the |LEVELS| screen to vi ew and control the pulse-level parameter for both channels o n one scree n. If you have a s ing le chan nel in stru ment both the timing and level parameters are on the page 68.

62 Operating Reference HP 81110/04A Reference

|OUTPUT| screen, see

Normal/Complmnt Parameter

NOTE: This paramete r is only available in text mode.

Operating Reference

|LEVELS| screen

Normal and Complement modes.

Normal

Switch the OUTPUT between

Pulse Leading-edge rises from low to high-level, trailing- edge falls from high to low-level.

Complmnt

Pulse leading-edge falls from high to low level, trailing-edge rises from low to high-level

Seperate/Added Outputs Parameter

NOTE: The channel add option is not available for the HP 81110A with

HP 81112A 3.8 V 330 MHz outputs installed. This param eter is only available in text mode, and if you have two output channels fitted.

Switch

Separate Outputs

Added output mode on and off.

OUTPUT 1 and OUTPUT 2 operate as entirely separate output channels.

Added at Output 1

OUTPUT 1 and OUTPUT 2 signals are added together at the OUTPUT 1 connector. The OUTPUT 2 connector is no longer used. You can use this mode to create complex pulse waveforms as shown, see Figure 24.

HP 81110/04A Reference Operating Reference 63

Operating Reference

|LEVELS| screen

Figure 24 |TIMING| screen, Added Outputs

NOTE: Note that by using |PATTERN| mode you can code 3 or 4-level

codes, or place spike pulses from OUTPUT CH2 on particular data pulses on OUTPUT CH1 for example. Since OUTPUT 2 is no longer used, its Impedance parameters are no longer available, see Figure 25.

Figure 25 |LEVELS| screen, Added Outputs text mode

The |LEVELS| graphic page is also modified to indicate the multiple levels formed by OUTPUT 1 + 2:

64 Operating Reference HP 81110/04A Reference

Operating Reference

|LEVELS| screen

Figure 26 |LEVELS| screen, Added Outputs graphics mode

Offset, Amplit, High, Low

Level Paramet ers

Set and display th e pulse levels in terms of either Offset and Amplitude, or High- and Low-level. You can quickly set TTL or ECL output levels using the

Set TTL

Set TTL and Set ECL formats.

Select High and Low-level formats and automatically set the levels to the default TTL levels:

TTL-HI +2.50 V TTL-LOW +0.0 mV

The default levels are set once and can be adjusted afterwards by moving the cursor onto the values as normal.

High-Low

Select High and Low-level format for the pulse levels.

Offs-Ampl

Select Offset and Amplitude format for the pulse levels. Offset is measured from 0 V to the middle o f the pulse amp litude. Pulse- amplitude is

HP 81110/04A Reference Operating Reference 65

Operating Reference

|LEVELS| screen

the difference between the High- and Low-levels of the pulse.

Set ECL

Select High and Low-l evel for mat and autom atic ally s et th e l evels to th e default ECL levels:

ECL-HI -850mV ECL-LOW -1.80V

These default level s are se t once and can be adjust ed afte rwards by moving the cursor onto the value as normal.

mv V mA A Voltage/Current Mode

NOTE: This parameter is only available in text mode.

Move the entry field onto the level units to select between setting the pulse-levels

in Volts or in Amperes.

50 Ω into Output Source Impedance Parameter

NOTE: This paramete r is only available in text mode

An impedance of 50

Ω or 1 kΩ is selectable. There is no selection for the

HP 81110A when fitted with HP 81112A 3.8 V / 330 MHz output channels.

50.0Ω Load Impedance Parameter

Adjust the load impedance value expected at the OUTPUT to compensate for non-50

66 Operating Reference HP 81110/04A Reference

Ω loads. The displayed level-parameters are then calcu-

Operating Reference

|LEVELS| screen

lated using this value and therefore represent the levels at a non-50Ω static load.

Output Voltage and Power Protection

NOTE: When an OUTPUT is switc hed on, the instrument monitors the

actual voltage and current levels at the OUTPUT. The OUTPUT is automaticall y switched o ff if vol tage levels or power dissipati on reach levels which could damage the OUTPUT circuits.

The available output levels for an OUTPUT could therefore be limited by external voltages, loads and the level settings of the other OUTPUT if you are using a dual channel instrument with Outputs added at OUTPUT 1. Refer to Specifications Chapter 3, Outputs Table 73 on page 344.

NOTE: On the screen of the HP 81110A with HP 81112A 3.8 V/330 MHz

outputs installed the second status output is displayed for differential outputs. The instrument also assumes 50 impedance and there is no added outputs option available.

Ω load

HP 81110/04A Reference Operating Reference 67

Operating Reference

|OUTPUT| Screens

The |OUTPUT| screen i s avai la ble if you hav e only o ne c hannel f itt ed to your HP 81110A or HP 81104A mainframe.

PUT 2|

selected The

OUTPUT 1| screen shown in this section.

Figure 27 |OUTPUT| screen, text mode

screens are available on a two channel instrument if you have

Group Params by:OUTPUT 1/2 on the |CONFIG| screen.

|OUTPUT| screen on a single channel instrument is identical to the

|OUTPUT 1| and |OUT-

Figure 28 |OUTPUT 2| screen, text mode

The |OUTPUT| screen mode can be toggled between textual and graphi-

68 Operating Reference HP 81110/04A Reference

Operating Reference

|OUTPUT| Screens

cal displays

Pulse-period Parameter

To set the Pulse Period Parameter please refer to TIMING, “Pulse- period Parameter” on page 55.

Normal/Complmnt Parameter

For details of the normal/complmnt Parameter please refer to LEVELS, “Normal/Complmnt Parameter” on page 63.

Pulse Delay Parameter

For details of the Pulse Delay Parameter please refer to TIMING, “Pulse Delay Parameter” on page 56.

Pulse Width Parameter

For details of the Pulse Width parameter please re fer to TIMING, “Pulse Width Parameter” on page 57.

Pulse Leading-edge Parameter

For details of the Pulse Leading-edge Parameter please refer to TIMING, “Pulse Leading-edge Parameter” on page 59.

HP 81110/04A Reference Operating Reference 69

Operating Reference

|OUTPUT| Screens

Pulse Trailing-edge P arameter

For details of the Pulse Trailing Edge Parameter please refer to

TIMING, “Pulse Trailing-edge Parameter” on page 60.

Separate/Added Outputs Parameter

For details o f the Separate/Added Outputs Parameter please refer to LEVELS, “Seperate/Added Outputs Parameter” on page 63.

Offset, Amplit, High, Low Level Parameters

For details on the Offset, Amplit, High and low parameters please refer to LEVELS, “Offset, Amplit , High, Low Level Parameters” on pag e 65.

mv, V, mA, A Voltage/Current Mode

For details o n the mv, V, mA, A Voltag e/Current Mode please refer to LEVELS, “mv V mA A Voltage/Current Mode” on page 66.

50Ω into OUTPUT Source Impedance Parameter

For details on the 50Ω into OUTPUT Source Impedance Parameter please refer to LEVELS, “50 W into Output Source Impedance Parameter” on page 66.

70 Operating Reference HP 81110/04A Reference

Operating Reference

|OUTPUT| Screens

50.0Ω Load Impedance Parameter

For details on the 50.0Ω Load Impedance Parameter please refer to

LEVELS, “50.0W Load Impedance Parameter” on page 66.

Output Voltage and Power Protection

For details on Output Voltage and Power Protection please refer to LEVELS, “Output Voltage and Power Protection” on page 67.

HP 81110/04A Reference Operating Reference 71

Operating Reference

|PATTERN| Screen

Figure 29 |PATTERN| screen, text mode

Figure 30 |PATTERN| screen, graphics mode

Use the |PATTERN| screen to edit th e pattern data which is generated when you select the pattern mode on the

You can toggle between graphics and text mode by pressing the

|PATTERN| softkey or .

72 Operating Reference HP 81110/04A Reference

|MODE/TRG| screen.

Operating Reference

|PATTERN| Screen

UPDATE Parameter

UPDATE (Upd Cont)

The pattern data at the outputs are updated continuously as you edit the data on the screen.

NO UPD (Upd Once)

The pattern data at the outputs are not updated automatically from the screen. You can therefore modify the data patte rns on t he scr ee n withou t affecting the pattern which is currently being generated at the Outputs.

Press to update the pattern once.

Addr Parameter

Adjust the address of the bit-editing window to scroll through the data. Figure 31 shows the bit-editing window located at the third bit in the pattern.

Last Parameter

Adjust the last bit number to set the length of th e pattern in the ra nge 2 to

16384.

Bit-Editing Window

Move the entry field into the bit-editing window to edit individual data bits. The bit-editing window moves automatically one location to the right for each pattern entered.

HP 81110/04A Reference Operating Reference 73

Operating Reference

|PATTERN| Screen

Figure 31 |PATTERN| screen, Bit-editing window

While the entry field is in the bit-edit window you can use the knob to scroll through the data.

RZ/NRZ Data Format

The data output format RZ or NRZ can be selected for the channels if not already done in the |MODE/TRG| screen

OUTPUTS (CH1,CH2) and STROBE OUT (STRB)

Use the DATA ENTRY keys to edit the data bit at the cursor:

Set bit to 0, and move the bit-editing window to the next

bit.

Set bit to 1, and move the bit-editing window to the next

bit.

Toggle bit without moving the bit-editing window.

You can edit both output channels together in the BOTH pattern. This makes it easy to enter data for 3 or 4-level codes.

74 Operating Reference HP 81110/04A Reference

Operating Reference

|PATTERN| Screen

Figure 32 |PATTERN| screen, Bit-editing window BOTH

Table 3: Conversion Table

BOTH DATA ENTRY CH2 CH1

CH1 CH2 BOTH STRB Block Editing Fu nctions

Move the entry field onto the CH1, CH2, BOTH or STRB at the left hand side of the screen to use the block editing functions.

HP 81110/04A Reference Operating Reference 75

Operating Reference

|PATTERN| Screen

Figure 33 |PATTERN| screen, Block editing functions

Select the function using the MODIFY knob. Press to carry out the edit.

NOTE: Most of the block editing functions apply from (or at) the current

Addr of the bit-editing window to the Last bit in the pattern. The data memory is 16384 bits long. Bits beyond the Last bit are

not affected by the editing functions except when you insert or delete bits.

Fill 0

Set all bits from Addr to Last inclusive to 0.

Fill 1

Set all bits from Addr to Last inclusive to 1.

Invert

Invert all bits from Addr to Last incl usive.

76 Operating Reference HP 81110/04A Reference

Operating Reference

|PATTERN| Screen

First Bit

Set the first bit to 1, and bits 2 to Last to 0.

Last Bit

Set the last bit to 1, and all preceding bits to 0.

Ins Bit

Insert a bit a t Addr. The bit value is co pied from the current bit at Addr, and bits

Addr to 16384 are shifted right. Bit 16384 is lost.

NOTE: The Last parameter is not automatically incremented, so the

length of the generated pattern is not increased unless you adjust the Last parameter yourself.

Del Bit

Delete the bit at Addr. Bits (Addr + 1) to 16 384 are shifted left and bit 16 384 is copied.

NOTE: The Last parameter is not automatically decremented, so the

length of the generated pattern is not decreased unless you adjust the Last parameter yourself.

Clock÷N

Fill bits Addr to Last with a divided clock pattern. After pressing

you can adjust the dividing fa ctor from 2 to 16384 an d press

again to implement.

HP 81110/04A Reference Operating Reference 77

Operating Reference

|PATTERN| Screen

For example:

n=2 Sequence = 101010101010101....

n=3 Sequence = 100100100100100....

n=4 Sequence = 110011001100110....

n=5 Sequence = 110001100011000....

n=6 Sequence = 111000111000111....

n=7 Sequence = 111000011100001....

n=8 Sequence = 111100001111000....

NOTE: Note that the output signal is only a squarewave if you are using

NRZ data. You can see this best in graphics mode:

Figure 34 |PATTERN| Clock÷4, CH1=RZ, CH2=NRZ

78 Operating Reference HP 81110/04A Reference

Operating Reference

|PATTERN| Screen

PRBS 2n-1

Fill bits Addr to Last with a 2n-1 Pseudo-random Binary Sequence. After pressing you can adjust n in the range 7 to 14 and

press again to implement.

Some Hints on Editing Pattern Data

The block editing functions, apart from Insert and Delete, do not affect data bits beyond the current

Last parameters to define the block of bits you want to edit.

and Remember, however, that the the pattern generated at the output s.

Example

Last bit. Therefore you can use the Addr

Last parameter also defines the length of

You are currently generating a 48 bit pattern on OUTPUT 1 and now want to fill bits 10 to 20 with data value 1. On the

1 If necessary, move the cursor to

UPDATE and select Upd Once to

|PATTERN| screen:

prevent the data edits from affecting the pattern currently being generated at the OUTPUT.

NO UPD is already shown, or it isn’t important if the pattern is

If disturbed during the editing you can ignore thi s ste p.

2 Adjust 3 Adjust

Addr to 10. Last to 20

UPDATE is still active, the pattern at the OUTPUT will now be

automatica lly reduced to 20 bits in lengt h.

4 Move the cursor to

CH1 to access the block editing functions for

OUTPUT 1.

HP 81110/04A Reference Operating Reference 79

Operating Reference

|PATTERN| Screen

5 Use the MODIFY knob to select Fill 1 from the list of functions.

6 Press to fill bits 10 to 20 with data value 1.

UPDATE is still active, the pattern a t the OUTPUT will now c hange

If automatical ly.

7 Adjust

Last back to 48 to return the pattern length to 48.

UPDATE is still active, the pattern at the OUTPUT will now return

to 48 bits in length.

8 If necessary, move the cursor to

NO UPD and press to

update the pattern being generated at the OUTPUT (or select

)

Cont

Upd

80 Operating Reference HP 81110/04A Reference

Operating Reference

|LIMITS| screen

Figure 35 |LIMITS| screen

Use the |LIMITS| screen to set up voltage and current limits for the pulse level para meters to prevent accidental damage of the device under test.

After you switch on the limits, the pulse level parameters on the

|LEVELS|/|OUTPUT| screens cannot be adjusted outside the ranges on

|LIMITS| page if the OUTPUT is switched on. Note that because

the current and voltage limits apply, the available ranges of the impedance parameters are also affected.

When output limits are on, the limits are indicated on the

|OUTPUT| pages in graphics mode and the level bar is scaled accord-

|LEVELS|/

ingly:

HP 81110/04A Reference Operating Reference 81

Operating Reference

|LIMITS| screen

Figure 36 Level graphics with Limits ON on OUTPUT 1|TRG-LEV|

screen

82 Operating Reference HP 81110/04A Reference

Operating Reference

|TRG-LEV|

Figure 37 |TRG-LEV| screen

Use the |TRG-LEV| screen to:

• Set the triggering threshold and input impedance for the EXT

INPUT connector.

• Set the triggering threshold and input impedance for the HP 81106A

CLK IN connector, if fitted.

• Set the output levels fo r the STROBE OUT and TRIGGER OUT

connectors.

EXT-IN Parameter

Move the entry fie ld on to EXT-IN to qu ickly set t he tr igger ing t hr eshold of the EXT INPUT to a TTL or ECL compat ible level.

Set TTL Set the EXT INPUT threshold to +2.5V.

You can adjust the threshold by moving the entry field onto the value.

HP 81110/04A Reference Operating Reference 83

Operating Reference

|TRG-LEV|

Set ECL Set the EXT INPUT threshold to -1.3V.

You can adjust the threshold by moving the entry field onto the value.

Voltage

Set any threshold level in the range -10.0 V to +10.0 V. Move the entry field onto the value to adjust it.

50Ω/10kΩ EXT INPUT Im pedance Parameter

T oggl e the inpu t impedanc e of the EXT INPUT connect or betwee n 50 Ω and 10 kΩ.

CLK-IN Parameter

Move the entry fie ld on to CLK-IN to qu ickly set t he tr igger ing t hr eshold of the CLK IN to a TTL or ECL compatible level.

Levels can be selected in the same way as for EXT-IN, see page 86.

50Ω/10kΩ CLK IN Impedance Par ameter

T oggl e the i nput i mpeda nce of t he CLK IN co nnecto r betwee n 50 Ω and 10 kΩ.

TRIGGER-OUT TRIGGER OUT Level Parameter

Set the output levels into 50 Ω for the TRIGGER OUT connector.

84 Operating Reference HP 81110/04A Reference

Operating Reference

|TRG-LEV|

TTL

High-level +2.50 V Low-level 0V

ECL

High-level -0.85V Low-level -1.8V

STROBE-OUT STROBE OUT Level Parameter

Set the output levels into 50 Ω for the STROBE OUT connector. Select TTL or ECL levels as for TRIGGER OUT.

HP 81110/04A Reference Operating Reference 85

Operating Reference

|MEMCARD| Screen

Figure 38 |MEMCARD| screen, No card present.

Use the |MEMCARD| screen to:

• Store instrument settings to the memory-card.

• Recall instrument settings from the memory-card.

• Delete files from the memory-card.

• Format a memory card.

NOTE: Note that the HP 81110A and th e HP 8110 4A use DOS f ormat t ed

memory-cards and you cannot create or delete directories using the instrument.

86 Operating Reference HP 81110/04A Reference

Operating Reference

|MEMCARD| Screen

Dir Path Current Di rectory Parameter

Move the entry field onto Dir Path to change directory on the memory-card or to view the subdirectories in the current directory (The current directory name is displayed next to

Dir Path).

All the sub-dire ctori es in the cu rr ent di recto ry are l isted in the MODI FY window .

Figure 39 |MEMCARD| screen, Dir Path Example

NOTE: Settings from HP 81104A can not be used in the HP 81110A or

vice versa.

HP 81110/04A Reference Operating Reference 87

Operating Reference

|MEMCARD| Screen

To change directory

1 Use the MODIFY knob to select the directory name from the list of

2 Press .

Figure 40 |MEMCARD| screen, Subdirectory Example

files and directories in the MODIFY window.

NOTE: Note that when you are in a sub-directory you can return to the

parent-directory by selecting .. from the directory list in the MODIFY window.

88 Operating Reference HP 81110/04A Reference

Operating Reference

|MEMCARD| Screen

Filename Parameter

Move the entry field onto the Filename parameter to view and select a file from th e current directory. Use the MODIFY knob to scroll through the filenames listed in the MODIFY window.

Figure 41 |MEMCARD| screen, Filename Example

Memory Card Operations

Move the entry field onto Perform Operation and use the knob to select the operation:

ReadCard

Read the DOS file-system information from the memory-c ard after inserting a new card. Press to carry out the operation.

Recall

Recall the selected file as the current-instrument setting. Press

to carry out the operation.

HP 81110/04A Reference Operating Reference 89

Operating Reference

|MEMCARD| Screen

Store

Store the curre nt instrument-s etting to the memory-card.

Figure 42 |MEMCARD| screen, Store Operation

Press once to start edi ti ng th e filename for the setting in the MODIFY window. The currently selected filename is used as default.

CAUTION: If you do not modify the filename, the existing file will be overwritten

when you press .

Press to CANCEL the store operation at any time.

To modify the filename

1 Move the character cursor with the CURSOR keys.

The filename can be up to 8 characters long.

2 Modify a character using the knob.

When you have finished, press to store the setting.

90 Operating Reference HP 81110/04A Reference

Operating Reference

|MEMCARD| Screen

NOTE: Note that the DOS filename suffix.ST0(STx) is added

automatically to the filename when you store the current settings.

Store All

Store the curr ent instr ument-setti ng and the i nstrument-s etting me mories 1 to 9 to the memory-card. Each setting is stored in a separate file with the same name but different suffixes:

Setting Filename Suffix

Current Setting Memory 1 Memory 2 . . Memory 9

.ST0 .ST1 .ST2 . . .ST9

Press once to start edi ti ng th e filename for the setting in the MODIFY window. The currently selected filename is used as default.

CAUTION: If you do not modify the filename, the existing file will be overwritten

when you press .

Press to CANCEL the store operation at any time.

To modify the filename

Same procedure as for the Store Operation, see page 90.

HP 81110/04A Reference Operating Reference 91

Operating Reference

|MEMCARD| Screen

Delete

Delete the selected file from the memory-card. Press to carry out the operation.

Format

CAUTION: Formatting a memory-card destroys any existing files on the card.

Format the memory-card. Press to carry out the operation.

92 Operating Reference HP 81110/04A Reference

|CONFIG| Screen

Figure 43 |CONFIG| screen

Use the |CONFIG| screen to:

Operating Reference

|CONFIG| Screen

• Set the HP-IB address of the HP 81110A.

• Perform a s elftest.

• Group the pulse parameters by

OUTPUT1 OUTPUT2 on a two channel instrument.

• Select the frequency reference source and frequency for the PLL.

HP-IB Address

Set the HP 81110A or HP 81104A HP-IB address in the range 0 to 30. The default address of HP 81110A and HP 81104A is 10.

HP 81110/04A Reference Operating Reference 93

TIMING/LEVELS or

Operating Reference

|CONFIG| Screen

Perform Operation Selftest

Select Selftest in the MODIFY area.

Perform a selfte st by pr essing . If the selftest fails, a fl ashin g

E is displayed. Press to see the list of error messages.

Perform Operation Calibrate

Select Calibrate in the MODIFY area. Perform a timing calibration for

the VFO-period, delay and width circuitries by pressing .

If the calibration fails, a flashing the list of error messages.

NOTE: Timing Calibration is available for HP 81110A only.

E is displayed. Press to see

Parameter Grouping Group Params by

NOTE: This option is only available if you have two Output modules

fitted to your HP 81110A or HP 81104A mainframe.

Configure the grouping of the pulse-parameters on the user interface:

TIMING/LEVELS

The pulse-timing param eters for OUTPUTS 1 and 2 are grouped together on the

94 Operating Reference HP 81110/04A Reference

|TIMING| parameter screen.

Operating Reference

|CONFIG| Screen

The pulse-level parameters for OUTPUTS 1 and 2 are grouped together

|LEVELS| parameter screen.

on the

OUTPUT 1/2

All timing and level par amet ers for OUTPUT 1 ar e gr ouped together on

|OUTPUT 1| parameter scre en.

the

All timing and level parameters for OUTPUTS 2 are grouped together

|OUTPUT 2| parameter screen.

on the

PLL Reference

Set the frequency reference source for the PLL:

Internal

The internal 5 MHz reference.

HP 81110/04A Reference Operating Reference 95

Operating Reference

|CONFIG| Screen

CLK-IN

An external reference si gnal at the CLK IN (PLL REF) connector. You can set the expected frequency of the external reference to 5 MHz or 10 MHz:

Figure 44 |CONFIG| screen, External PLL Reference frequency

96 Operating Reference HP 81110/04A Reference

Operating Reference

Warnings and Errors

The HP 81110A and HP 81104A have two levels of error reporting called warnings and errors. On a single channel instrument, or a two channel instrument with output s ing checking is always enabled unless you switch it off vi a the HP-IB using the :

SYSTem:CHECk command.

NOTE: On a two channel instrument with Separate Outputs, error

and warning checking is automatically disabled for a channel which is switched off. This allows you to ignore the settings of a channel you are not using. You can also switch off error and warning checking via the HP-IB.

←------------------- ---Maximu m prog rammable range of select ed parameter--------------------→

Added at Output 1, error and warn-

Probably invalid

ERROR WARNING WARNING ERROR Setting not

implemented

Probably valid ALL signal parameters

in specification

←----------------- Setting implemen ted in h ardware- -------------→ Setting not

Probably vali d Probably

invalid

implemented

Warnings

A warning is generated when the output signal could be invalid due to a combination of worst cas e unc ertai ntie s at the cu rrent setti ngs of all re levant parameters. For example, when adjusting the pulse-width, the leading edge, trailing edge, and pulse period settings and their uncertainties have to be considered in order to chec k if the width settin g will fit within the pulse period. R efer to "An Example of Warning and Error Reporting". Note that the warning limits are therefore not fixed for a particular parameter, but vary with the setting s of the relate d parameters. It is also

HP 81110/04A Reference Operating Reference 97

Operating Reference

Warnings and Errors

possible that the error and warning limi ts are the same, tha t is, a warning does not occur before the error limit is reached.

If a warning occurs, the settings are still implemented in the hardware since the worst case conditions used to evaluate the warning limits are very unlikely to occur in practice. A blinking

together.

Errors

An error is generated when an invalid mode is chosen, or the required parameter se ttings cannot be implemente d in the output hardware. Multiple errors can occur, but only the first error detected is displayed. An error is indicated by a blinking error message at the bottom of the screen.

W indicates that one or more warnings have occurred. Press

to view the warning list. Multiple warni ngs can exist

NOTE: If you are using the knob to adjust parameters it is normally not

possible to generate warnings or errors. All parameters are automatically limited to settings which guarantee specified operation.

If you do want to use the knob to adjust a parameter beyond its warning limits:

1. Adjust to the limit with the knob

2. Press and adjust beyond the limit with the knob.

98 Operating Reference HP 81110/04A Reference

Operating Reference

Warnings and Errors

AUTOSET

You can press to carry out an AUTOSET. The instrument res ets all p aramete rs, bas ed on the c urrent pe riod sett ing,

to remove all warning and error conditions.

An Example of Warning and Error Reporting

1 Switch on instrument and recall standard settings with

The period is now set to 1

µs.

2 Switch on OUTPUT 1 with .

3 On the

onto the value of the Width parameter (

4 Use the knob to make the

940ns).

|TIMING| or |OUTPUT 1| screen, move the parame ter cursor

100ns).

Width as large as possi bl e ( approximately

This limit is intended to guarantee that the actual output pulse is within specifications, for the actual period. The limit is calculated taking into accou nt a worst case combination of minimum period from the peri od setting ( width from the width setting (

940 ns) together with min imum

leading and trailing edge settings (e.g.

HP 81110/04A Reference Operating Reference 99

1 µs) and maximum

2.00 ns).

Operating Reference

Warnings and Errors

NOTE: Note that if you now try and adjust the Leading Edge from its

current setting of e.g. 2.00 ns with the knob, it c ann ot be adjusted. This is bec ause the upper a nd lowe r warnin g limits a re curren tly

2.00 ns. The width is at its maximum value and width+leading edge+trailing edge < period.

5 Press and adjust the Width above its warning limit. A

flashing

W appears to indicate that a warning condition has occurred.

NOTE: Note that as long as no errors occur, the output hardware is set up

and attempts to generate the required output.

6 Press to see the warning message:

Trailing edge 1 may cut next pulse

7 Press again to return to the Width parameter.

8 Increase the

Width further to approximately 980 ns and press

to see the current warnings:

Width 1 too close to period

Trailing edge 1 may cut next pulse

9 Press again to return to the Width parameter.

10 Increase the

(approximately 1.10

Width further until a flashing error message appears

µs):

OUTPUT 1: Width > Period

You have reached the current upper error-limit of the Width parameter.

100 Operating Reference HP 81110/04A Reference

Operating Reference

Warnings and Errors

The setting is not implemented in the output hardware.

11 Press to carry out an AUTOSET.

HP 81110/04A Reference Operating Reference 101

Operating Reference

Warnings and Errors

102 Operating Reference HP 81110/04A Reference

Agilent 81104A Specifications Sheet

Specifications and Main Features

Frequently Asked Questions

User Manual