HP 83480A, 54750A User manual

User's Guide

HP

83480A

Analyzer

,

HP 54750A Oscilloscope

HP Part No. 83480-90027

Printed in USA September 1997

Hewlett-Packard Company

Lightwave Operations

1400 Fountaingrove Parkway

Santa Rosa, CA

95403-1799, USA

(707) 577-1400

Notice.

without

to

The information contained in this document is subject to change

notice

material,

this

merchantability

for

liable

be

not

connection

damages

in

material.

Restricted

Government

the

of

252.227-7013

Commercial

other

Regulatory

Rights

Computer

agencies

Information.

is

in

for

information.

Hewlett-P

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including

and tness

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limited

herein

no

to

or

makes

not

particular

a

furnishing,

duplication,

,

set

as

and Computer

subparagraphs

and

,

Restricted

matter

front

warranty

implied

the

,

purpose

for

.

incidental

performance

disclosure

or

forth in

subparagraph

Software

(c) (1)

this

clause

book

Rights

of

kind

any

of

warranties

Hewlett-P

consequential

or

use

or

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by

clause

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contains

regard

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

Copyright Hewlett-P

ackard Company 1997

written permission is prohibited, except as allowed under the copyright laws.

CAUTION

Safety Symbols

The following safety symbols are used throughout this manual. Familiarize

yourself with each of the symbols and its meaning before operating this

instrument.

The

caution

sign denotes a hazard to the instrument. It calls attention to a

procedure which, if not correctly performed or adhered to, could result in

damage to or destruction of the instrument. Do not proceed beyond a

caution

sign until the indicated conditions are fully understood and met.

the

necessary

is

a

life-threatening

.

are

Do

manual

refer

a

correctly

proceed

not

understood

fully

symbol.

instructions

the

to

performed

product

The

in

denotes

warning

G

N

I

N

R

A

W

The

procedure

injury

in

indicated

Instruction

Manual

sign

which,

of

loss

or

conditions

instruction

The

user

the

for

if

life

not

to

hazard.

or

beyond

and

marked

is

manual.

the

met.

It

adhered

a

warning

this symbol

with

, could

to

sign until

when

result

it

attention to

calls

L

,

year

a

y

CE

ISM 1-A

accompanied

CE

The

it's when

is

mark

the design

registered

a

was proven).

trademark

Community

European

the

of

(if

This is a symbol of an Industrial Scientic and Medical Group 1 Class A product.

b

The CSA mark is a registered trademark of the Canadian Standards Association.

j

The line power on symbol.



The line power o symbol.

iii

General Safety Considerations

WARNING

IN

RN

WA

N

I

N

R

A

W

N

I

N

R

A

W

N

I

N

AR

W

Before this instrument is switched on

, make sure it has been properly

grounded through the protective conductor of the ac power cable to a

socket outlet provided with protective earth contact.

Any interruption of the protective (grounding) conductor, inside or

outside the instrument, or disconnection of the protective earth terminal

can result in personal injury.

of

a

in

only

materials

or

cause

the

only

the

by

normal

with

by

is

G

There

personal injury

are

.Be

points

many

Any adjustments

protective covers

instrument

trained

this

G

If

equipment

condition

continued

or

G

F

same

with

service

instrument

could

which

(in

and

type

personnel.

protection

ratings

in

extremely careful.

or service

not

is

impaired.

be

all

procedures that

as

used

This

means

for

against

nA/nV). The

(type

removed should

specied,

protection

re hazard,

instrument

the

which

instrument

use of

can,

require operation

performed

be

protection

the

used

be

must

intact)

are

replace

other

only

line

fuses

provided

.

fuse

contacted,

if

prohibited.

remain

may

its

that

power

supply

internal

connected

power cord

G

The

5 seconds

for

is

disconnecting

after

to

the

capacitors

from

plug

live

.

CAUTION

Before this instrument is switched on,

make sure its primary power circuitry

has been adapted to the voltage of the ac power source.

Failure to set the ac power input to the correct voltage could cause damage to

instrument

the

is

This

Safety

a

when

Class

ac

the

Product

1

power

cable

(provided with

plugged

is

incorporated in the power cord). The mains plug shall only be

socket outlet provided with

the protective conductor inside or

the instrument dangerous

a protective earth contact. Any interruption of

outside of the instrument is likely to make

. Intentional interruption is

in.

protective

a

earthing

prohibited.

ground

inserted in a

iv

CAUTION

Always use the three-prong ac power cord supplied with this instrument.

Failure to ensure adequate earth grounding by not using this cord may cause

instrument damage.

CAUTION

N

O

I

T

U

A

C

This instrument is designed for use in INSTALLATION CATEGORY II and

POLLUTION DEGREE 2 per IEC 1010 and 664 respectively.

Ventilation requirements: When installing the instrument in a cabinet,

the convection into and out of the instrument must not be restricted. The

ambient temperature (outside the cabinet) must be less than the maximum

operating temperature of the instrument by 4C for every 100 watts

dissipated in

greater than

circuits

input

The

damage

of

applying

static

connecting

conductors

outer

and

connectors

input

instrument

the

electrical

The

54750A

HP

the cabinet.

800 watts

misuse

to

due

discharges

coaxial

any

without rst

is properly

ports of

very sensitive

,are

the

If

,then

damaged

be

can

not

is

to

cable

the

of

earth-grounded

plug-in modules

total

forced

covered

front-panel

the

to

together

touching

electrostatic

to

power

convection

electrostatic

by

under

connectors

.

the

to

used

,

dissipated

must

warranty

connectors

input

momentarily

,

touching

void

A

of

frame

prevent

the

with

discharge

the

in

used.

be

discharge

Therefore

.

instrument.

the

buildup

83480A

HP

.

cabinet

(ESD).

.

short

the

of

is

Repair

avoid

,

Before

center

the

front-panel

Be

charge

static

and

sure

NOTE

This instrument has been designed and tested in accordance with IEC Publication 1010.1, and has been

supplied in a safe condition. The instruction documentation contains information and warnings which

must be followed by the user to ensure safe operation and to maintain the instrument in a safe

condition.

.

v

NOTE

Clean the cabinet using a damp cloth only.

vi

X-Ray Radiation Notice

vii

Declaration of Conformity

viii

Additional Information

The following table lists additional performance information for the EMC

product specications listed in the

EMC Product Specication Performance Code

IEC 801-2:1991 /EN 50082-1 (1992): 4kV CD,8kVAD PASS - Temporary degradation, self-recoverable.

Declaration of Conformity

.

IEC 801-3:1984 /EN 50082-1 (1992); 3 V/m, (1 kHz 80%

AM, 27-1000 MHz)

IEC 801-4:1988 /EN 50082-1 (1992): 0.5 kV Sig Lines, 1kV

Power Lines

PASS - Temporary degradation, self-recoverable.

PASS - Normal operation, no eect.

ix

Typeface Conventions

WARNING

N

O

I

T

U

A

C

4

Front-Panel Key

NNNNNNNNNNNNNNNNNNNNNNN

Softkey

Screen Text

This symbol will appear along with bold print to highlight a warning.

symbol

This

5

This represents a key physically located on the instrument.

This indicates a \softkey," a key whose label is determined

by the rmware of the instrument.

This indicates text displayed on the instrument's screen.

required.

is

will

appear

when

special

care

x

Certication

Hewlett-Packard Company certies that this product met its published

specications at the time of shipment from the factory.Hewlett-Packard

further certies that its calibration measurements are traceable to the United

States National Institute of Standards and Technology, to the extent allowed

by the Institute's calibration facility, and to the calibration facilities of other

International Standards Organization members.

xi

Warranty

This Hewlett-Packard instrument product is warranted against defects in

material and workmanship for a period of one year from date of shipment.

During the warranty period, Hewlett-Packard Company will, at its option,

either repair or replace products which prove to be defective.

For warranty service or repair, this product must be returned to a service

facility designated by Hewlett-Packard. Buyer shall prepay shipping charges

to Hewlett-Packard and Hewlett-Packard shall pay shipping charges to return

duties

product

the

and taxes

.

Buyer

to

for products

However

,

returned to

Buyer

shall

Hewlett-Packard

pay

shipping

all

from

charges

another

,

country

.

,

Hewlett-Packard

Hewlett-P

instructions

does

rmware

Limit

The

or

ackard

when

warrant

not

be

will

of

tion

a

foregoing

inadequate

interfacing,

environmental

maintenance

or

NO

OTHER

W

warrants that

for use

with an

properly installed

the

that

uninterrupted

arranty

W

warranty

maintenance

unauthorized

specications

.

ARRANTY

its software

instrument

operation

error-free

or

not

shall

Buyer

by

modication

for

EXPRESSED

IS

on that

the

of

to

apply

Buyer-supplied

,

or

product,

the

OR

and rmware

execute

will

instrument.

instrument,

.

operation

,

improper

or

resulting

defects

misuse

IMPLIED

designated

programming

its

Hewlett-P

software

or

software

site

HEWLETT-P

.

by

ackard

or

,

improper

from

or

outside

preparation

A

of

CKARD

SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Exclusive Remedies

THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE

ANY

HEWLETT-P

REMEDIES

DIRECT

AMA

D

.

INDIRECT

,

GES

WHETHER

LEGAL THEORY

,

.

CKARD

A

SPECIAL,

ASED

B

SHALL

INCIDENT

CONTRACT

ON

BE LIABLE

NOT

OR CONSEQUENTIAL

AL,

TORT

,

FOR

OTHER

ANY

OR

,

the

xii

Assistance

Product maintenance agreements and other customer assistance agreements

are available for Hewlett-Packard products.

For any assistance, contact your nearest Hewlett-Packard Sales and Service

Oce.

When an instrument is returned to a Hewlett-Packard service oce for

servicing, it must be adequately packaged and have a complete description of

the failure symptoms attached.

nature

the

failure

about

(such

and

,

as

error

When describing

problem. Include

of the

instrument

messages)

failure

along

the failure

copies of

settings,

the

with

, please

additional failure

data related

instrument

be as

being

specic

instrument

to

returned.

possible

as

information

time

as

any

in

.

the

service

instrument

before

Please

Any

This

quickly

The

were

Hewlett-P

ON

TI

AU

C

Instrument

original

do

notify

special

will

as

original

not

materials.

adequately

not

arrangements

the

help

possible

shipping

retained,

ackard

oce

damage

HP

.

service

the

oce

for

service

containers

identical

packaging

.

result

can

Never use

cushion the

the

oce

from

styrene pellets

instrument or

returning

instrument

repair

should

be

materials

using

your

can

return

and

If

used.

are

packaging

as packaging

prevent it

discussed

be

your

the

available

materials

original

from

for

this

at

instrument

materials

through

other

material.

shifting

than

They

the carton. They may also cause instrument damage by generating static

electricity.

xiii

Hewlett-Packard Sales and Service Oces

U.S. FIELD OPERATIONS

Headquarters

Hewlett-Packard Company

19320 Pruneridge Avenue

Cupertino, CA 95014 U.S.A.

(800) 752-0900

Colorado

Hewlett-Packard Company

24 Inverness Place, East

Englewood, CO 80112

649-5000

(303)

Jersey

New

y

Compan

ackard

Hewlett-P

Road

ond

P

Green

150

07866

NJ

,

y

Rockawa

586-5400

(201)

Headquarters

S.A.

ackard

Hewlett-P

vril

Nant-d'A

Me

yrin

du

2/Geneva

150, Route

1217

Switzerland

780.8111

22)

(41

Britain

Great

Hewlett-Packard Ltd.

Eskdale Road, Winnersh Triangle

Wokingham, Berkshire RG11 5DZ

California, Northern

Hewlett-Packard Company

301 East Evelyn

Mountain View, CA 94041

(415) 694-2000

Georgia

Hewlett-Packard Company

2000 South Park Place

Atlanta, GA 30339

955-1500

(404)

exas

T

Compan

ackard

Hewlett-P

Road

Campbell

East

930

75081

Richardson,

(214)

EUROPEAN

TX

231-6101

FIELD

OPERA

France

ackard

Hewlett-P

Canada

Du

venue

1A

Courtaboeuf

Zone

F-91947

D'Activite

De

Cedex

Ulis

es

L

France

60

82

69

1)

(33

y

TIONS

California, Southern

Hewlett-Packard Company

1421 South Manhatten Ave.

Fullerton, CA 92631

(714) 999-6700

Illinois

Hewlett-Packard Company

5201 Tollview Drive

Rolling Meadows, IL 60008

342-2000

(708)

Germany

GmbH

ackard

Hewlett-P

Bad

y

Strasse

Homburg

16-0

Hewlett-Packard

61352

German

6172)

(+49

xiv

Hewlett-Packard Sales and Service Oces (continued)

INTERCON FIELD OPERATIONS

Headquarters

Hewlett-Packard Company

3495 Deer Creek Rd.

Palo Alto, California 94304-1316

(415) 857-5027

China

China Hewlett-Packard Company

Road

Huan X1

Bei San

38

Shu

u

Y

Shuang

District

Hai Dian

China

Beijing,

256-6888

1)

(86

aiwan

T

aiwan

T

ackard

Hewlett-P

Building

H-P

Floor,

8th

Road

North

Hsing

Fu

337

aiwan

T

aipei,

T

712-0404

2)

(886

Australia

Hewlett-Packard Australia Ltd.

31-41 Joseph Street

Blackburn, Victoria 3130

(61 3) 895-2895

Japan

Yokogawa-Hewlett-Packard Ltd.

, Sagamihara

Yabe

1-27-15

Japan

Kanagawa

(81 427)

229,

59-1311

Canada

Hewlett-Packard Ltd.

17500 South Service Road

Trans-Canada Highway

Kirkland, Quebec H9J 2X8

Canada

(514) 697-4232

Singapore

Hewlett-Packard Singapore Ltd.

. Ltd.

Pte

87

Box

.

.O

Alexandra

P

Singapore 9115

271-9444

(65)

xv

Electrostatic Discharge Information

Electrostatic discharge (ESD) can damage or destroy electronic components.

All work on electronic assemblies should be performed at a static-safe work

station. Figure 0-1 shows an example of a static-safe work station using two

types of ESD protection:



Conductive table-mat and wrist-strap combination.



Conductive oor-mat and heel-strap combination.

protection.

ESD

of

signicant

provide

together

used

when

,

types

Both

only the

Of the

two,

ESD protection

ensure user

o

T

isolation

of

static-safe

G

N

I

N

R

A

W

These

working

from ground.

accessories

techniques

circuitry

on

table-mat and

when used

safety,

the

.

a

for

with

static-safe

,

alone.

static-safe

Refer to

voltage

a

T

a

wrist-strap

accessories

for

0-1

able

station

work

potential

combination

level

provide

must

information

should

greater

not

than

provides

least

at

ordering

on

used

be

volts

500

adequate

M

1

when

.

xvi

Figure

0-1.

Example

a

of

static-safe

work

station.

xvii

Reducing ESD Damage

The following suggestions may help reduce ESD damage that occurs during

testing and servicing operations.



Personnel should be grounded with a resistor-isolated wrist strap before

removing any assembly from the unit.



Be sure all instruments are properly earth-grounded to prevent a buildup of

static charge.

Table 0-1 lists static-safe accessories that can be obtained from

Hewlett-Packard using the HP part numbers shown.

Table 0-1. Static-Safe Accessories

HP Part

Number

wire

includes:

(The

.

9300-0797 Set

9300-0980 Wrist-strap

9300-1383 Wrist-strap

post-type

9300-1169 ESD

heel-strap

static control

3M

wrist-strap

1.5

cord

black,

color

,

connection.

(reusable

and

m

wrist-strap

ft)

(5

stainless

to

6

mat 0.6

steel,

months).

12

Description

2

m

are

cord

without

1.2

not

cord,

(2

m

included.

has

ft

2

four

ft)

4

must be

They

adjustable

and

4.6

links

(15

cm

ordered

and a

ground

ft)

separately

mm

7

.)

xviii

Lightwave Connector Care

CAUTION

Introduction

Improper connector care, cleaning, or use of mismatched cable connectors

can invalidate the published specications and damage connectors. Clean all

cables before applying to any connector. Repair of damaged connectors due to

improper use is not covered under warranty.

Lightwave cable interfaces can be damaged by improper cleaning and

connection procedures. Dirty or damaged lightwave interfaces can result in

nonrepeatable

practices

best

Lightwave

connectors

connections

receivers

sources

or

Fiber

and

,

components

cables

optic

dierent environments

in

combinations

of

cables

do not

or

to

may

.

jackets,

,

inaccurate

clean,

care

are

used

be

patch

,

used

are

and

well

work

measurements

connect, and

,

for

to

used

cables

join

to

terminals

,

panels

dierent

at

There

.

indexes

together

connect

between

wavelengths

are

refraction.

of

Cables

.

chapter

This

.

inspect lightwave

ends

ber

two

optical

other

many

and

in

,

variety

a

should

of

general,

In

match

will suggest

together

ports

types

single

core/cladding

,

sizes

each

on

or

dierent

other

some

connectors.

These

.

laser

devices

of

,

systems

multimode

types

and

,

the

system.

However

provide

to

another

to

regardless

,

direct

a

When

.

of

and

these

cable

the

low-loss

connectors

type

optical

are

the

,

signal

used

connectors

transition from

measurement system,

in a

have only

one function:

one ber

end

repeatability becomes an important factor.

Lightwave connectors dier from electrical or microwave system

connectors.

In a ber optic system, light is transmitted through an extremely

small ber core. Because ber cores are often 62.5 microns (0.0625 mm) or

less in diameter, and dust particles range from tenths of a micron to several

microns

core

ber

diameter,

in

can degrade

dust

the

two cores meet). Therefore

minute

very

and

performance

contamination

connector

the

of

, the connector must be precisely aligned and the

on

interface

(where

the

of

end

the

connector interface free of trapped foreign material.

Connector (or insertion) loss is one important performance characteristic

.

of a lightwave connector

Typical values are less than 1 dB of loss

sometimes as little as 0.1 dB of loss with high performance connectors

,and

.

xix

Return loss

is another important factor. It is a measure of reection. The less

reection the better, (the larger the return loss, the smaller the reection).

The best physically contacting connectors have return losses better than

50 dB, although 30 to 40 dB is more common.

Causes of connector loss and reections

include core misalignment,

dierences in the numerical aperture of two bers, spacing and air gaps,

reections caused by damaged, worn, or loose ber ends, and the improper

use and removal of index matching compounds.

Achieving the best possible connection,

where the ber end faces are ush

(no air gap) and properly aligned, depends on two things:

connector

of

type

the

1.

connection

the

If

using the

2.

lossy

is

be

dierence

not

less

proper

reective

or

smooth

accurate

in

cleaning

,

the

or

F

.

optical

and

will

light

connection

reason,

this

or

measurement

connecting

make

not

is

lightwave

systems

a

repeatable

not

techniques

smooth

connections

.

transition.

measurement

,

can

the

If

make

transition

will

data

critical

a

is

xx

Cleaning and handling

Proper cleaning and handling of lightwave connectors is imperative for

achieving accurate and repeatable measurements with your Hewlett-Packard

lightwave equipment. Lightwave interfaces should be cleaned before each

measurement using the techniques described in this handbook. Information

on protecting and storing your connectors/cables and tips on how to properly

mate connectors are also included in this section.

Denition of terms

To avoid confusion, the following denitions are used in this handbook.

Connector Houses the ber end, most open at the end of a lightwave

cable or on the front panel of an instrument or accessory.

dapter

A

Does

not

contain

optical

ber

optical

two

mate

to

Used

.

connectors.

Handling

Always

should

ends

cleaning

or

Always

are

they

handle

never

solutions

keep

not

lightwave connectors

allowed to

be

tools

and

cable

.

(See

and

\Storage

connectors

use

in

.

touch

ends

.")

and cable

anything

covered

ends

except

with

other

protective

a

mating

cap

surfaces

when

Fiber

.

care

great

with

Cleaning

clean

to

cleaning

Two

non-lensed

lightwave

processes

lightwave

adapters

are

connectors

.

provided.

The

.

rst

The

second

process

describes

how

to

clean

CAUTION

Hewlett-Packard strongly recommends index matching compounds NOT

be applied to their instruments and accessories. Some compounds, such as

gels, may be dicult to remove and can contain damaging particulates.If

you think the use of such compounds is necessary, refer to the compound

manufacturer for information on application and cleaning procedures.

xxi

Cleaning non-lensed

lightwave connectors

Equipment

The following is a list of the items that should be used to clean non-lensed

lightwave connectors.

CAUTION

Isopropyl alcohol

Cotton swabs

Foam swabs

Compressed air

::::: ::::::: :::::: ::::::: ::::::

:::::::::::::::::::::::::::::::::::

::::::: ::::::: :::::: ::::::: ::::::: ::

:::::: :::::: ::::::: ::::::: :::::: :

HP part number 8500-5344

HP part number 8520-0023

HP part number 9300-1223

HP part number 8500-5262

Hewlett-Packard recommends you do not use any type of foam swab to clean

optical ber cable ends.Foam swabs can leave lmy deposits on ber ends

that can degrade performance. However, foamisrequired to clean inside bulk

head

connectors

.

Process

of the

parts

other

swabs

Some

particles

be

can

across

displace

and

amount

done

particles

and

,

when

by

the

compressed

clean

wiping or

of

application

applying

end

ber

smaller

mild

of

alcohol

the

several

than

one

Before

cleaning

connector

Then

.

air

scrubbing

cotton

a

.

alone

This

alcohol

to

times

Use

.

alcohol

use

the

of

will

swab

technique

ber

the

isopropyl

to

end

ber

remove

not

moving

and

can

end,

alcohol,

clean

can

help

clean

the

help

them.

back

it

remove

the

clean

ber

remove

This

and

ferrules

cotton

end.

forth

or

micron.

clean

the

Allow

compressed

end after

ber

the

across

the

connector

. Compressed

air

end.

ber

dry (about

to

air lessens

the alcohol

Visually inspect

a minute)

evaporates.

the ber

dry

or

the chance

It should

end for

immediately

it

of deposits

blown

be

stray

with

remaining

horizontally

cotton

bers

on

As

.

soon as the connector is dry, the connection should be made.

CAUTION

Inverting the compressed air canister while spraying will produce residue on

the sprayed surface. Refer to instructions provided on the compressed air

canister.

xxii

Cleaning lightwave

adapters

Equipment

All of the items listed above for cleaning connectors may be used to clean

lightwave adapters. In addition, small foam swabs may be used along

with isopropyl alcohol and compressed air to clean the inside of lightwave

connector adapters.

NOTE

As noted in a previous caution statement, the foam swabs can leave lmy deposits. These deposits

are very thin however, and the risk of other contamination buildup on the inside of adapters greatly

outweighs the

risk of

contamination

of

adapters.

of

inside

the

cleaning

from

left

deposits

swab

foam

Process

connector

the

Clean

with

clean

adapter

the

swab

foam

a

compressed

by

Allow

.

air

applying

the

.

isopropyl

adapter

to

alcohol

dry

air

inside

the

to

it

dry

or

,

of

immediately

with

Storage

Making connections

Hewlett-P

of

All

or

shutter

caps

instrument. Also

cable ends

from damage

ackard's

caps

dust

of

,all

lightwave

the

on

cables

the

contamination.

or

instruments

adapters

shipped

are

that

These

are

shipped

that

have

dust

come

covers

caps

with

and

either

to

protective

laser

the

protect

covers should be kept on the equipment except when in use.

Proper connection technique requires attention to connector compatibility,

insertion technique and torque requirements. Connectors must be the same

the

.

the

ber

connector

Attempting

connection

type

to

from

order

in

connect

functioning

ensure mechanical

to

incompatible

properly

connector

even cause

and

optical

and

types may

compatibility

prevent

damage

to

surfaces. A visual inspection of the mechanical interfaces may not be

enough because some connector types have the same mechanical interface

but have dierent optical ber interfaces (for example

angled-contact or

manufacturer's data sheet

straight-contact ber interfaces). Refer to the

to conrm connector type compatibility before

, angled-no-contact,

connecting.

xxiii

the

CAUTION

When you insert the ferrule into an adapter, make sure the ber end does

not touch the outside of the mating adapter. This ensures you will not rub

the ber end against any undesirable surface. Many connectors have a keyed

slot provided for optimum measurement repeatability that also helps to align

and seat the two connectors. After the ferrule is properly seated inside the

other connector, use one hand to keep it straight, rotate it to align the key,

and tighten it with the other hand.

Most connectors using springs to push ber ends together exert one to two

pounds of force. Over-tightening or under-tightening these connectors can

result in misalignment and nonrepeatable measurements. Always nger

tighten the connector in a consistent manner. Refer to the manufacturer's

sheet

data

OPTION

Use

.

care

pull

not

minimum

any

for

INSTRUMENTS:

3XX

an

only

bare

the

radius

bend

torque

recommendations

appropriate

of

out

ber

.

T

ber

its

avoid

o

jacket,

cleaver

.

damage

tool

crush

handle

,

for

kink

it,

the

cutting

it,

or

pigtail

ber

the

bend

ber

it

Do

.

past

with

its

Summary

making

When

following

the

measurements:

Conrm



Use



Be



Use



eep

K



connector

extreme

the

sure

cleaning

the

connectors

xxiv

measurements

precautions

type

handling

in

care

connector

interfaces

methods

cable

and

with lightwave

to

help

will

compatibility

lightwave

all

are

described

covered

ends

insure

.

clean

this

in

instruments

reliable

good,

cables

before

handbook.

not

when

connectors

and

making

use

in

accessories

or

repeatable

,

any

.

,

.

connections

.

Inspection

performance

Optical

testing

Visual inspection

Although it is not necessary, visual inspection of ber ends can be helpful.

Contamination and/or imperfections on the cable endface can be detected as

well as cracks or chips in the ber itself.

Several ber inspection scopes are on the market, but any microscope with

an enlargement range of 100X to 200X can be used. It is helpful to devise

some method to hold the ber in place while viewing in this range.

Inspect the entire endface for contamination, raised metal, or dents in the

metal, as well as any other imperfections. Inspect the ber core for cracks

and chips.

Visible

imperfections

performance of

from contacting).

bers

the

assurance

that

touching

not

the lightwave

Consistent optical

your lightwave

the

connection (unless

measurements

connection is

performing

the imperfections

are

properly

.

the

keep

best

the

aect

not

may

core

ber

Introduction

good

a

,

you

cables

and

you

are

may

or

return

will

know

to

wish

accessories

upon

loss

to

able

be

tell

Consistent

indication

insertion

the

your cables

test

you

the

and

future if

receipt,

in

measurements

you have

that

loss and/or

and accessories

retain the

any degradation

your

with

connections

good

return

loss

measured data

has

lightwave

.

your

of

insertion

for

comparison,

for

occurred.

equipment

However

lightwave

loss

If

.

Insertion

loss

Insertion loss can be tested using a number of dierent test equipment

congurations. Some of these are:



an HP 8702B or HP 8703A lightwave component analyzer system with a

lightwave source and receivers

power

a

analyzer

sensor

an



an



HP 83420

HP 8153A

lightwave

with

set

test

multimeter

an

with

HP

a

8510

source

network

and

module

Many other possibilities exist. The basic requirements are an appropriate

lightwave source and a compatible lightwave receiver

. Refer to the manuals

provided with your lightwave test equipment for information on how to

perform an insertion loss test.

xxv

Typical insertion loss for cables is less than 1 dB, and can be as little as

0.1 dB.For actual specications on your particular cable or accessory, refer to

the manufacturer.

Return loss

Return loss can be tested using a number of dierent test equipment

congurations. Some of these are:



an HP 8703A lightwave component analyzer



an HP 8702B lightwave component analyzer with the appropriate source,

receiver and lightwave coupler

8504B

HP

an



an HP



Many

lightwave

Refer

8153A

other

the

to

source

coupler

information

Typical

return

specications

precision

lightwave

possibilities

compatible

a

,

.

how

loss

provided

to

for

your

manuals

on

reectometer

multimeter

exist.

perform

mode

single

particular

and

basic

The

lightwave

your

with

return

a

units

or

cable

81534A

HP

requirements

and

receiver

,

lightwave

loss test.

is better

accessory

than

, refer

return

are

a

test

40

loss

appropriate

an

compatible

equipment

or

F

.

dB

manufacturer

the

to

module

for

actual

.

xxvi

In This Book

This manual provides information about the HP 83480A-series digital

communications analyzers and the HP 54750A-series digitizing oscilloscopes.

Part 1

Introduction

2

Part

Communications

Digital

Analyzer

Part

Digitizing

Functions

3

Oscilloscope

Functions

Part 4

System Functions

Chapter 1 gives you a brief overview of the instrument and describes

the menu and key conventions and the front and rear panels

of the instrument.

Chapter 2 describes the front panel keys and functions.

Chapter

3

4

5

6

7

8

9

10

the

lists

an

gives

the

gives

describes

and

base

describes

time-interval

make

describes

specications

overview

eye

the

trigger

the

how

of

mask

,

test,

mask

menus

automatic

use

to

increase

to

measurements

acquisition,

the

characteristics

and

calibration

the

and eyeline

measure

.

waveform

built-in automatic

the

measurement

channel

of the

options

measurement tutorials

channel setup

,

eye

measurement

accuracy and

.

dene

,

setup

instrument.

.

time

,

process

.

measurements.

how to

measure

,

FFT, histogram, math, time base and trigger menus.

Chapter 11 describes the disk, display, limit test, marker, setup, setup

print, utility and waveform menus.

Chapter

12 provides

Chapter 13

a

instrument's

list

display

messages

of

.

that

appear

may

describes basic instrument architecture

the

on

.

xxvii

Contents

1. The Instrument at a Glance

Ordering Information . . . . . . . . . . . . . . . .

Menu and Key Conventions . . . . . . . . . . . . . .

The FrontPanel . . . . . . . . . . . . . . . . . . .

4

Autoscale

5

. . . . . . . . . . . . . . . . . . . . .

Display . . . . . . . . . . . . . . . . . . . . .

Entry devices . . . . . . . . . . . . . . . . . . .

. .

anel

P

Displa

N

unction

F

Key

ts .

.

eys

K

Key

y

.

Key

.

2.

Indicator ligh

Rear

The

General

Clear

The

N

NN

Fine

Help

cal

Lo

Run

Stop/Single

Purpose

N

1-5

1-7

1-9

1-10

1-11

1-13

1-14

.

1-15

.

. .

.

. .

.

. .

.

2-3

2-4

.

2-5

.

2-6

.

2-7

.

2-8

.

Characteristics

Specications

3.

Horizon

rigger

T

Standard

tal

sp

and

system

ecications

instrumen

.

electrical

2.5

t,

.

GHz

.

and

.

mo

.

optical

.

de

.

hannels

c

.

. .

.

Option 100, 12 GHz mode . . . . . . . . . . . . .

Option 100, 12 GHz/Gate mode . . . . . . . . . . .

General specications . . . . . . . . . . . . . . . .

4. Calibration Overview

.

Mainframe

Plug-in

ew,

Sk

Calibration

dule

Mo

es,

prob

Calibration

Probe Calibration

O/E

. .

.

. .

.

. .

.

con

erters

v

.

. . . . . . . . . . . . . . .

3-3

.

. .

3-4

.

. .

.

3-4

3-5

3-6

4-3

.

. .

.

4-5

.

4-6

.

. . .

4-7

Contents-1

5. Eye, Mask and Eyeline Mode Measurement Tutorials

Making Eye Diagram Measurements . . . . . . . . . .

Setting up the system . . . . . . . . . . . . . . .

Positioning the waveform . . . . . . . . . . . . . .

Making the measurement. . . . . . . . . . . . . .

Measuring extinction ratio . . . . . . . . . . . . . . . 5-10

Measuring eye height . . . . . . . . . . . . . . .

Measuring crossing % . . . . . . . . . . . . . . .

Measuring eye width . . . . . . . . . . . . . . . .

Measuring jitter . . . . . . . . . . . . . . . . . .

Measuring duty cycle distortion . . . . . . . . . . .

Measuring Q-factor . . . . . . . . . . . . . . . .

. .

.

w

.

v

a

.

eform

.

. .

.

t

.

. .

.

ts

.

83480A

(HP

.

. .

.

. .

.

installation

.

Option 001

.

. .

.

. .

Measuring

esting

T

Setting

ositioning

P

Making

Standard

Making

only)

eline

Ey

Noise

Error

Equipmen

Error

time

rise

fall time

Mask

a

to

system

the

up

the

measuremen

the

Mask

Measuremen

eline

Ey

.

traces

reduction

trace

.

capture

conguration/program

t

capture

. .

.

. .

5-3

5-4

5-5

5-9

5-13

5-14

5-15

5-16

5-17

5-19

.

5-21

5-23

.

5-25

5-27

.

5-28

.

5-31

.

5-32

.

5-37

.

5-38

.

5-40

.

5-42

.

5-43

.

5-48

6. The Digital Communications Analysis Menus

Mask Test Menu . . . . . . . . . . . . . . . . . .

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

N

Measure Ey

Contents-2

Scale Mask

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

N

Mask Align

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

N

Align Mode

N

Run...

N

Fail

NNNNNNNNNNNNNNNNNNNNNNNNN

N

Extinction ratio...

NNNNNNNNNNNNNNN

Eye height

NNNN

Crossing %

N

NN

N

NN

N

NN

N

action...

NNNNNNNNNNNNNNNNN

NNNNNNNNNNNNNNNNNNNNNNNNN

. . . . . . . . . . . . . . . . . . .

.

. .

.

N

NN

N

e Men

NNNNNNNNNNNNNNNNNNNNNNNNN

N

NN

N

u . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

NNN

. . . . . . . . . . .

. .

NNNNNNNN

.

. . . . . . . .

.

. .

.

. .

.

. .

. . . . . .

. . . . . . . .

6-3

6-19

6-21

6-22

6-23

6-25

.

6-30

6-32

6-35

6-36