Agilent 71450B Reference Guide

Reference

HP

Optical Spectrum

Analyzers

71450B/1B/2B

HP Part No. 70950-90070

Edition 2

Printed in USA June 1998

1400 Fountaingrove Parkway,

Santa Rosa, CA

95403-1799, USA

Notice.

The information contained in this document is subject to change

without notice. Hewlett-Packard makes no warranty of any kind with regard

ackard

this

of

shall

material,

this

to

merchantability

be liable

not

damages

for

connection

in

including

tness

and

contained

errors

with

but

for

the

limited

not

particular

a

herein

furnishing,

the

,

to

purpose

incidental

for

or

performance

implied

Hewlett-P

.

warranties

consequential

or

use

or

,

material.

.

.S

U

the

Restricted

Rights

Government

Rights

the

of

252.227-7013

Commercial

agencies

other

Legend.

subject

is

echnical

T

in

DOD

for

Computer

.

Use

restrictions

to

Data

agencies

Software

duplication,

,

set

as

and Computer

subparagraphs

and

,

Restricted

or

forth

Software

Rights

disclosure

in

clause

by

subparagraph

at

and

FAR

at

(c)

clause

(c) (1)

(1)

(c)

ARS

DF

the

of

(2)

52.227-19

(ii)

for

c



Copyright Hewlett-P

ackard Company 1997

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

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.

Regulatory Information

The specications and characteristics chapter contains regulatory information.

iii

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

from

software

outside

site

HEWLETT-P

.

by

ackard

or

,

improper

or

of

preparation

CKARD

A

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

iv

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.

v

CAUTION

N

I

N

R

A

W

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. 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.

procedure

attention

calls

and

It

adhered

or

warning

a

met.

to

sign

hazard.

denotes

not

.

are

Do

sign

correctly

proceed

not

understood

fully

warning

G

The

which,

of

loss

if

life

conditions

a

performed

beyond

to a

could result

,

until the

in injury

indicated

or

vi

General Safety Considerations

WARNING

IN

RN

WA

N

O

I

T

U

A

C

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.

the

of

damage

cause

by

only

circuitry

to

can,

require operation

performed

be

primary

its

sure

.

source

voltage

plugged

could

in.

power

cause

make

power

ac

correct

is

which

G

There

personal injury

are

.Be

points

many

Any adjustments

protective covers

service

instrument

this

adapted

set

to

with

personnel.

the

when

instrument

trained

Before

been

has

ailure

F

instrument

the

in

extremely careful.

or service

the

to

power

ac

the

procedures that

switched

is

voltage

input

power

ac

removed should

on,

the

of

the

to

cable

instrument

the

contacted,

if

vii

In This Book

This reference provides denitions for all hardkeys, softkeys, and error

messages.You'll also nd specications and characteristics, menu maps,and

other important information. Key denitions are organized in alphabetical

order for quick access.

Chapter 1 \Specications and Characteristics" contains HP 71450B/1B/2B

specication and characteristic information.

Chapter 2 \Menu Maps" show the hierarchical structure of the various

softkey menus

.

Chapter 3

Chapter

\Dictionary Reference"

alphabetical

\Error Messages"

4

displayed

\Concepts"

5

ables

spectrum

and

optical

\T

6

information

order

the

on

presents

Charts"

that

denes all

.

gives denitions

71450B/1B/2B

HP

information

analysis

you

theory

supplies

need.

may

miscellaneous

hardkeys and

error

for

.

deeper

a

for

application.

and

softkeys

that

codes

understanding

operating

may

in

be

of

viii

Contents

1. Specications and Characteristics

Denitions of Terms . . . . . . . . . . . . . . . . .

Specications:

Additional Specications:

Specications: Optional Current Source . . . . . . . .

Specications:

Specications: Optional Swept Polarization

Loss Kit

General

Regulatory

Sp

Notice

HP 71450B/1B/2B (HP 70950B/1B/2B)

HP 71451B (HP 70951B)

Optional Built-In White Light Source

.

..

.

y:

.

Noise

.

ecications

Information

German

for

.

. .

.

Declaration

Dependent

.

. .

.

. .

.

1-3

.. 1-5

... 1-9

1-12

... 1-13

1-14

.

1-15

.

1-16

.

. .

1-18

Menu

2.

3. Dictionary Reference

Maps

.

. .

u

Amptd

BW,

Mark

Misc

State

races

T

W

4

USER

4

USER

4

USER

4

USER

Alphabetical Listing . . . . . . . . . . . . . . . . .

Men

.

u.

Men

Swp

.

u.

Men

er

.

. .

u

Men

.

. .

u

Men

.

. .

.

u

Men

.

. .

.

u

Men

eln

v

a

Program

anced

Adv

DFB

u's

Men

5

anced

Adv

FP

u's

Men

5

anced

Adv

LED

u's

Men

5

Menu's PDL Advanced MeasurementProgram . .

45

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

.

4

485

5

9

.

415

1/T . . . . . . . . . . . . . . . . .

3-DIMEN On O

AA0B.

AA+B . . . . . . . . . . .

A(A0B)0C . . . . . . . .

A(A0B)0C+DL . . . . . . . . . . .

.

. .

.

. . . . . . . .

. . . . . .

Measuremen

. .

.

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

t

Program

t

Program

t

.

. . . . . .

. . . . . . . . .

. . . . . . . . . .

.

. .

. . . .

.

. .

.

. .

.

2-4

.

2-5

.

2-6

.

2-8

.

2-10

.

2-12

.

2-13

.

2-14

.

2-15

2-16

.

2-17

3-3

.

3-3

.

3-4

3-5

3-6

3-7

Contents-1

AA0B+DL . . . . . . . . . . . . . . . . .

AA0C ..................... 3-8

AA0C+DL . . . . . . . . . . . . . . . . .

AA*DL/(A+B) . . . . . . . . . . . . . . . .

AA*DL/(A+B+C) . . . . . . . . . . . . . . .

AA*DL/B . . . . . . . . . . . . . . . . . . .

AA*DL/C . . . . . . . . . . . . . . . . . . .

ADL*(A+B)/C . . . . . . . . . . . . . . . .

A METER On O . . . . . . . . . . . . . . . . .

A UNITS AutoMan . . . . . . . . . . . . . . . .

AXCH B . . . . . . . . . . . . . . . . . . . .

AXCH C . . . . . . . . . . . . . . . . . . . .

.

. .

.

CT

A

.

CTIVE MARKER

A

.

sync

adc

SYNC

ADC

trigger

adc

ADCTRIG

ALIGN

REF

AMP

AMPCOR

AMPCOR-

AMPCOR

Amptd . . . . . . . . . . . . . . . . . . . . . .

AMPTD VALUE . . . . . . . . . . . . . . . . .

ANALOG OUT . . . . . . . . . . . . . . . . . .

ANALYZR TEST . . . . . . . . . . . . . . . . .

ANOTATN On O . . . . . . . . . . . . . . . .

CHR

ANY

MKR

T

A

autmeas

Auto .

4

AUTO ALIGN

4

AUTO MEASURE

AUTO SCALE . . . . . . . . . . . . . . . . . .

OUT

.

C

A

DELA

FREE

NEGEDGE

POSEDGE

PRESET

OFFSET

LO

>

-

UPPER

>

O

On

.

O

On

.

state

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

5

. .

5

.

Y

.

. .

.

. .

.

. .

.

. .

.

. .

.

. .

.

WER

.

. .

. . . . .

.

. .

.

. .

.

. .

.

. .

.

. .

.

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

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

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

. . . . .

. . . . . . . . . . .

.

. .

.

. .

3-7

3-9

3-10

3-11

3-12

3-13

3-14

.

3-14

.

3-15

3-17

.

3-17

.

3-19

.

3-19

.

3-20

.

3-21

.

3-21

.

3-22

.

3-22

.

3-23

.

3-24

.

3-25

3-26

3-27

.

3-28

.

3-28

3-30

3-31

3-32

Contents-2

AUTOPTS ALIGN . . . . . . . . . . . . . . . .

AUTORNGOnO................... 3-34

AUTZEROOnO . . . . . . . . . . . . . . . .

BB-DL . . . . . . . . . . . . . . . . . . . .

BXCH C . . . . . . . . . . . . . . . . . . . .

BEEPER On O . . . . . . . . . . . . . . . . .

BLANK A . . . . . . . . . . . . . . . . . . . .

BLANK B . . . . . . . . . . . . . . . . . . . .

BLANK C . . . . . . . . . . . . . . . . . . . .

BLANK TRACES . . . . . . . . . . . . . . . . .

BW, Swp . . . . . . . . . . . . . . . . . . . . .

CB. . . . . . . . . . . . . . . . . . . . . .

.

. .

.

u

men

cal

.

POWER

CAL

setup

cal

CAL

CALC

CANCEL

catalog

4

CENTER

CHANGE

CHOP

CLEAR

CLEAR WRTB . . . . . . . . . . . . . . . . .

CLEAR WRTC . . . . . . . . . . . . . . . . .

CLOSEST PEAK . . . . . . . . . . . . . . . . .

CLOSEST PIT . . . . . . . . . . . . . . . . . .

COMMAND . . . . . . . . . . . . . . . . . . .

CONFIG

CONFIRM

CONT .

CONT SWEEP .

current source .

CURRENT SOUR

->CWL . . . . .

1->

.

VELEN

A

W

WVL

DISPLA

+

O

On

MSI

&

.

5

PREFIX

On

TO

WR

.

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

CWL STEP . . . . . . . . . . . . . . . . .

.

PIT

T

A

Y

.

O

END

A

T

.

DELETE

ERASE

.

. .

.

. .

.

. .

.

. .

.

. .

.

. .

.

. .

.

. .

.

. .

.

. .

.

. .

.

. .

.

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

CE . . .

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

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

.

. .

.

3-33

3-35

3-36

3-37

3-38

3-39

3-40

.

3-42

.

3-43

.

3-44

.

3-44

.

3-45

.

3-46

.

3-46

.

3-49

.

3-49

.

3-50

.

3-50

.

3-51

3-52

3-53

3-54

3-56

.

3-57

.

3-57

.

3-57

3-58

3-62

3-63

Contents-3

DB/DIV AutoMan . . . . . . . . . . . . . . . .

dBm......... ...... ...... .... 3-64

debug . . . . . . . . . . . . . . . . . . . . . .

DEBUG FAST . . . . . . . . . . . . . . . . . .

DEBUG On O . . . . . . . . . . . . . . . . . .

DEBUG SLOW. . . . . . . . . . . . . . . . . .

DEFINE USR KEY . . . . . . . . . . . . . . . .

DELETE ALL . . . . . . . . . . . . . . . . . .

DELETE CHAR . . . . . . . . . . . . . . . . .

DELETE or

DELETE SEGMENT . . . . . . . . . . . . . . .

DELTA . . . . . . . . . . . . . . . . . . . . .

DETECTR

. .

DFB

4

DISPOSE

distrib

DISTRIB

DSP

DSPL

DUTY

EDIT

ENTER

en

ENTER

ENVLOPE

ERASE ALL . . . . . . . . . . . . . . . . . . .

erase/ restart . . . . . . . . . . . . . . . . . . .

ERR . . . . . . . . . . . . . . . . . . . . . . .

execute DLP . . . . . . . . . . . . . . . . . . .

EXIT . . . . . . . . . . . . . . . . . . . . . .

EXT

EXTEND

extnded align

FLAT .

FORMAT . .

FP . . . . .

FREQ . . . . . . .

FULL SPAN . . . . . . . . . . . . . . . . . . .

DISPLA

ter

Y

LIN

Y

FUNCDEF

limit

.

TRIG

...

Ext

.

5

USER

u

men

On

ON

B

CYCLE

COMMAND

.

LINE

.

MKR

.

IN

ST

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

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

. .

.

t

In

.

O

.

O

.

. .

.

OFF

.

TE

A

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

.

. .

.

%

.

. .

.

. .

.

. .

.

. .

.

. .

.

. .

.

BW

. .

.

. .

.

. .

.

. .

.

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

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

. .

.

. .

.

. .

.

. .

.

. .

.

. .

3-63

3-64

3-65

3-66

3-67

3-68

3-69

3-70

3-71

3-72

.

3-73

.

3-73

.

3-74

.

3-74

.

3-75

.

3-75

.

3-76

.

3-77

.

3-77

.

3-77

.

3-78

.

3-78

3-79

3-80

3-81

.

3-82

3-83

3-84

3-86

3-87

Contents-4

GATESWP On O . . . . . . . . . . . . . . . .

GAUSIAN ...................... 3-89

grat control . . . . . . . . . . . . . . . . . . . .

GRATOnO . . . . . . . . . . . . . . . . . .

GRATSCR On O . . . . . . . . . . . . . . . .

HELP On O . . . . . . . . . . . . . . . . . . .

HIGHEST PEAK . . . . . . . . . . . . . . . . .

4

5

HOLD

HOLD . . . . . . . . . . . . . . . . . . . . . .

HORZ OFFSET . . . . . . . . . . . . . . . . .

HP-MSIB CARD . . . . . . . . . . . . . . . . .

HPIB DISK . . . . . . . . . . . . . . . . . . .

HSWP

HYS

IGEN

INIT

INSER

4

INSTR

instr

4

INSTR

INT

INTEGR

tegrt

in

INTEGR

INTRNL

key control . . . . . . . . . . . . . . . . . . . .

LAST SEGMENT . . . . . . . . . . . . . . . . .

LCL . . . . . . . . . . . . . . . . . . . . . . .

LED . . . . . . . . . . . . . . . . . . . . . . .

LEFT PEAK . . . . . . . . . . . . . . . . . . .

LEFT

ligh

lim

limit lines

LIMITS On O

LINE . . . .

LINEAR .

LINES On O

LOAD FILE . . . . . . . . . . . . . . . . . . .

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

. .

.

IN/OUT

LEVEL .

LIMIT

On

PDL

or

T

.

5

des

mo

PRESET

WIN

T

men

T

MEMOR

PIT

source

t

amp

>

-

<

O

.

On

.

. .

.

. .

.

5

.

. .

.

O

.

. .

.

PK

OM

FR

.

. .

.

u

.

STOP

STR

WL

. .

.

WL

T

. .

.

Y

.

. .

.

. .

.

. .

.

cor

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

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

. . . .

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

. . . . .

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

.

. .

.

. .

.

. .

.

. .

.

. .

.

. .

.

. .

.

3-87

3-89

3-90

3-91

3-92

3-93

3-94

3-95

3-96

3-97

3-98

3-99

3-101

3-102

3-103

3-104

3-105

3-106

3-107

3-109

3-110

3-111

3-112

3-113

3-114

Contents-5

LOCKOUT ANOTATN . . . . . . . . . . . . . .

LOG dB/DIV .......... ...... ..... 3-116

LORENZ . . . . . . . . . . . . . . . . . . . . .

LOWER->AMPCOR . . . . . . . . . . . . . . .

LSN . . . . . . . . . . . . . . . . . . . . . . .

MANUAL ALIGN . . . . . . . . . . . . . . . . .

Marker . . . . . . . . . . . . . . . . . . . . . .

marker excursn . . . . . . . . . . . . . . . . . .

marker readout . . . . . . . . . . . . . . . . . .

MARKER TUNE . . . . . . . . . . . . . . . . .

MAX HOLD A . . . . . . . . . . . . . . . . . .

MEAS . . . . . . . . . . . . . . . . . . . . . .

.

. .

.

4

MENU

MIN

MINIMUM

MK

MKNOISE

MKP

MKR

mkr

MKR

MONO

MONOCHR

MONOCHROMATOR OUTPUT . . . . . . . . . .

NEXT PAGE . . . . . . . . . . . . . . . . . . .

4

NEXT PEAK

NEXT PEAK . . . . . . . . . . . . . . . . . . .

NEXT PIT . . . . . . . . . . . . . . . . . . . .

NORM

4

NORMAL ON/OFF

oneshot math .

OPTICAL INPUT

OPTIMIZ . . . . .

OPTSENS On O .

ORDER AutoMan . . . . . . . . . . . . . . . . .

.

5

HOLD A

STOP

A

b

OF

On

USE

On

BW

On

BW

om

w/zo

NRM

TRA

INPUT

5

SEGMENT

A

ST

On

.

PEAK

PIT

POINT

On

A

OMA

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

TES

O

.

O

.

O

.

. .

.

O

.

. .

.

O

.

. .

.

O

.

. .

.

w

b

.

. .

.

O

. .

.

C

B

. .

.

INPUT

TOR

.

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

5

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3-115

3-116

3-117

3-118

3-119

3-120

3-121

3-122

3-123

3-124

3-125

3-126

3-127

3-128

3-129

3-130

3-131

3-132

3-133

3-134

3-135

3-136

3-137

Contents-6

OSA . . . . . . . . . . . . . . . . . . . . . . .

OSA PULSE .... ...... ...... ..... 3-140

PSTATE On O . . . . . . . . . . . . . . . . .

PARTIAL ERASE . . . . . . . . . . . . . . . . .

PAUSE . . . . . . . . . . . . . . . . . . . . .

PD INPUT . . . . . . . . . . . . . . . . . . . .

PD MEAS ON OFF . . . . . . . . . . . . . . . .

PDL . . . . . . . . . . . . . . . . . . . . . . .

PEAK EXCURSN . . . . . . . . . . . . . . . . .

4

PEAK SEARCH

PEAK THRESH . . . . . . . . . . . . . . . . .

PEAKS On O . . . . . . . . . . . . . . . . . .

PERIOD

PERSIST

PHOTO

PHOTODETECTOR

EX

PIT

pit,min

4

5

PLOT

POINT

WER

PO

WER

PO

WER

PO

WER

PO

eron

w

o

p

WER

PO

PRESEL

PRESET USER . . . . . . . . . . . . . . . . . .

prev menu . . . . . . . . . . . . . . . . . . . .

4

5

PRINT

PULSE WIDTH . . . . . . . . . . . . . . . . .

PURGE FILE . . . . . . . . . . . . . . . . . .

PWR

RB/SP

recall

recall from

RECALL LIMIT

RECALL MEMOR

RECALL ST

RECALL TRA

RECALL USER . . . . . . . . . . . . . . . . . .

5

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

. .

.

On O

DIODE

CURSN

ers

mark

.

OR

F

METER

IP

ON

LAST

ON

u

men

RECALL

ON

.

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

On

CAL

RA

AN

.

...

ATE . .

.

INPUT

.

. .

.

CAL

.

TIO

.

CE A .

.

. .

.

O

.

. .

.

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

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

.

Y.

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

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.

3-140

3-141

3-142

3-143

3-144

3-145

3-146

3-147

3-148

3-149

3-150

3-151

3-152

3-153

3-154

3-155

3-156

3-157

3-158

3-159

3-160

3-161

3-162

3-163

3-164

3-165

Contents-7

RECALL USERKEY . . . . . . . . . . . . . . .

->REF ........ ...... ...... ... 3-166

4

REF LEVEL

REF LVL . . . . . . . . . . . . . . . . . . . .

REF LVL POSN . . . . . . . . . . . . . . . . .

REL LEFT . . . . . . . . . . . . . . . . . . . .

REL RIGHT . . . . . . . . . . . . . . . . . . .

RELATIV On O . . . . . . . . . . . . . . . . .

REPLACE or

4

RES BW

RES BW AutoMan . . . . . . . . . . . . . . . .

RESTART . . . . . . . . . . . . . . . . . . . .

RIGHT

RMT

OM

R

e

v

sa

VE

SA

VE

SA

VE

SA

e

v

sa

VE

SA

VE

SA

VE

SA

SELECT

4

SENS

SENS AutoMan . . . . . . . . . . . . . . . . . .

service . . . . . . . . . . . . . . . . . . . . . .

SERVICE REQUEST . . . . . . . . . . . . . . .

show states . . . . . . . . . . . . . . . . . . . .

SIG TRK LIMIT . . . . . . . . . . . . . . . . .

SIG

SINGLE

SLOPE

SMSR On

SOURCE On

SPACE . .

1->

4

SPAN

SPAN . . . . . . . . . . . . . . . . . . . . . .

5

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

PEAK

PIT .

.

VERSION

.

LIMIT

MEMOR

TE

A

ST

.

to

CE

TRA

USER

USERKEY

CHAR

SEGMENT

.

5

On

TRK

SWEEP

.

O .

SPAN .

5

. . . . . . .

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

...

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

. .

.

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Y

.

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A

.

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.

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O

.

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.

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

O . . . . . . . . . . . . . . . . .

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

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

. .

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.

3-165

3-166

3-167

3-168

3-169

3-170

3-171

3-172

3-173

3-174

3-175

3-176

3-177

3-178

3-179

3-180

3-181

3-182

3-183

3-184

3-185

3-186

3-187

Contents-8

SPAN AutoMan . . . . . . . . . . . . . . . . . .

SRQ......................... 3-189

4

5

START

START . . . . . . . . . . . . . . . . . . . . .

STARTUP AutoMan . . . . . . . . . . . . . . .

State . . . . . . . . . . . . . . . . . . . . . .

STATE . . . . . . . . . . . . . . . . . . . . .

STEP . . . . . . . . . . . . . . . . . . . . . .

STM/RESP . . . . . . . . . . . . . . . . . . .

4

STOP

STOP . . . . . . . . . . . . . . . . . . . . . .

STORE A . . . . . . . . . . . . . . . . . . . .

STORE

STP

SWEEP

SWPTIME

sync

AKE

T

THRESHD

TITLE

TLK

4

TO

4

TO

trace

TRA

trace

trace logmath . . . . . . . . . . . . . . . . . . .

TRACE PRESET . . . . . . . . . . . . . . . . .

Traces . . . . . . . . . . . . . . . . . . . . . .

TRANS-Z IN . . . . . . . . . . . . . . . . . . .

TRIGGER FREE . . . . . . . . . . . . . . . . .

TRNSZLK

yp

t

units

UPPER-

UPPER/LOWER .

4

USER

USERCAL PRESET .

VERSION . . . . . . .

VERT OFFSET . . . . . . . . . . . . . . . . . .

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

5

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

. .

.

B

>

U-

THR

.

BND On

out

SWEEP

.

CENTER

REF LEVEL

B

A

CE

linmath

.

e

men

5

. . . .

O

.

O

On

.

AutoMan

.

O

On

.

5

.

5

.

C

LENGTH

.

O

On

. .

.

u

AMPCOR . . . . . . . . . . . . . . .

>

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

.

. .

.

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.

3-188

3-189

3-190

3-191

3-192

3-193

3-194

3-195

3-196

3-199

3-200

3-201

3-202

3-203

3-204

3-205

3-206

3-207

3-208

3-209

3-210

3-211

Contents-9

VID AVGOnO . . . . . . . . . . . . . . . . .

3-211

VID BWAutoMan . . . . . . . . . . . . . . . . . . . 3-212

VID LIN On O . . . . . . . . . . . . . . . . .

VIDEO . . . . . . . . . . . . . . . . . . . . .

VIDEO LEVEL . . . . . . . . . . . . . . . . . .

VIEW A . . . . . . . . . . . . . . . . . . . . .

VIEW B . . . . . . . . . . . . . . . . . . . . .

VIEW C . . . . . . . . . . . . . . . . . . . . .

W LIGHT ALIGN . . . . . . . . . . . . . . . . .

WARNING On O . . . . . . . . . . . . . . . .

WATT . . . . . . . . . . . . . . . . . . . . . .

WAVELEN . . . . . . . . . . . . . . . . . . . .

. .

.

CAL

OR

.

On

AutoMan

.

RES

TO

F

OFFSET

ALUE

V

.

O

.

O

.

O

. .

.

. .

.

BW

.

. .

.

. .

.

. .

.

VELEN

A

W

AVELEN

W

VELEN

A

W

eln

v

a

W

WHITE

CAL

WL

LIM

WL

STEP

WL

.

X

O

ZER

ZOOM

.

. .

.

3-213

3-214

3-215

3-216

3-217

3-218

3-219

3-220

3-221

3-222

3-223

3-224

4. Error

User Application

Operating

Hardware- Warning Errors (6000 { 6999) . . . . . . . .

Hardware- Broken Errors (7000 { 7999) . . . . . . . .

Computation Errors (8000 { 8999) . . . . . . . . . . .

Factory-Use Only Errors (9000 { 9999) . . . . . . . . .

Warning Messages (16001 { 16012) . . . . . . . . . .

Concepts

5.

Blo

Detection T

Sensitivity Coupling States

Sweep Time Operation .

Optical v

Contents-10

Messages

Diagram

k

c

Errors (0001

Errors (2000

.

{

.

echniques . . . .

ersus Microw

ave Spectrum Analyzers

0999)

{

2999)

.

. .

.

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

. . . . . .

. . . . .

.

. . . . . . . .

. . . . . . . . . .

. .

.

. . .

4-3

.

4-4

.

4-14

4-16

4-19

4-20

4-21

5-3

.

5-5

5-6

5-12

5-14

6. Tables and Charts

Index

Contents-11

Contents

1

Specications

Characteristics

and

Specications and Characteristics

This chapter contains specications and characteristics for HP 71450B/1B/2B

optical spectrum analyzer systems. The HP 71450B includes an HP 70950B

module. The HP 71451B includes an HP 70951B module. The HP 71452B

includes an HP 70952B module.

The specications in this chapter apply to all functions autocoupled over the

temperature range 0Cto+55C and relative humidity<95% (unless

otherwise noted). All specications apply after the instrument's temperature

been

has

routine has

stabilized

been run.

hour

1

after

Unless otherwise

continuous

noted, specications

operation

and

apply

without

auto-align

the

USER CAL.

Specications

Characteristics

Calibration

cycle

Contents

Specications

Characteristics

functions

.

italics

warrants

HP

interval.

recommend

e

W

calibrated at

describe

provide

performance

and

instrument

maintain

o

T

an HP

Denitions of Terms

that

warranted

useful,

of

specications

71450B/1B/2B

HP

the

service facility

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

Specications: HP 71450B/1B/2B

performance

nonwarranted,

but

instrument.

the

over

periodic

,

every 24

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

.

Characteristics

the

recalibrations

optical

months

Additional Specications: HP 71451B (HP 70951B)

Specications: Optional Current Source

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

Specications: Optional Built-In White Light Source

:

Dependent

:

::

:

Specications:

General

Regulatory

Specications

Information

Optional

Swept

:

::

:

olarization

P

:

::

:

information

recommended

are

spectrum

analyzer

.

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

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

Loss

:

::

:

::

:

the

about

printed

are

calibration

necessary

be

:

::

:

Kit

::

:

::

:

.

:

in

1-3

1-5

1-9

1-12

1-13

1-14

:

1-15

1-16

1-2

Denitions of Terms

Wavelength

Resolution

Amplitude



Absolute Accuracy (after user cal)

refers to the wavelength accuracy after

the user has performed the internal wavelength calibration using a source

of known wavelength.



Multimode Fiber Coupling Uncertainty

refers to additional wavelength

error which can occur from the loss of control of the image size and angle

that the light is launched into the OSA. Multiple angles are a result of the

multimoding

Linearity

Span



eproducibility

R



the

over

Tuning



wavelength

FWHM



available

passing

Scale

Fidelity



amplitudes

in

specied

epeatability

R

after

to

refers

indicates

This

.

through

refers

other than

larger ber

the

measure of

is a

to

refers

while

time

refers

having

the Full-Width-Half-Maximum

resolution

the

to the

at the

.

the deviation

amount

the

A

OS

the

wavelength

the

to

dierent

a

to

tuned

at

width

the

.

slits

potential errors

calibration point.

wavelength

of

tuned

is

power

half

in

from a

linear

drift

specic

a

to

accuracy

which

of

wavelength.

resolutions

the

of

level

amplitude

readout

This specication

.

sweep

can

wavelength.

returning

are

that

signal

at

is

sometimes called linearity.



Flatness

denes a oating band which describes the error in signal

amplitude over the indicated wavelength range. (This error may be

removed at a given wavelength by performing the user amplitude

calibration.)

occur

to

after

a

olarization

P



varying

by

Dependence

polarization of

the

be confused with

of energy between the

wavelength of interest.

seen

be

can

OS

A.

that

This

to

not

is

refers

the

to

amplitude

the

light

entering

change

the

amplitude variations caused by the varying distribution

dierent modes in ber that is multimode at the

1-3

Specications and Characteristics

Denitions of Terms

Sensitivity

Dynamic Range

Sweep Time

Photodetector

Input



Sensitivity

is dened as the signal level that is equal to six times the RMS

value of the noise. Displayed sensitivity values are nominal. Slightly lower

values may have to be entered to achieve specied sensitivity.



Dynamic Range

is a measure of the ability to see low-level signals that

are located very close (in wavelength) to a stronger signal. In electrical

spectrum analyzers, this characteristic is generally called shape factor.



Maximum Sweep Rate

refers to the maximum rate that the instrument is

able to acquire data and display it. This rate may be limited by multiple

internal processes.

time

Level

refers

sweep

from

refers

to

where

.

when the

Sweep Cycle



prepare for

and

of one

start

Scale



maximum

the

maximum

reference

the

Scale



Levels

reference

sweep

Fidelity:

error

Fidelity:

refers

level

Time

F

error

level

F

the

to

must

refers

the next

the

to

any

or

in

the

in

was

Multiple

or

maximum

be

time

the

to

It

.

sweep

the

of

start

measurement

power

single

a

dierence

not

between

changed

Measurements

error

changed

between

required

measured

be

can

sweep

with

measurement.

two

between

with Dierent

between

the

complete

a

make

to

the

as

.

eference

R

also

It

power

measurements

the measurements

eference

R

two measurements

measurements.

the

to

the

1-4

Specications:

HP 71450B/1B/2B (HP 70950B/1B/2B)

Wavelength

Range 600 nm|1700 nm

Span Range (continuously variable) 0.2 nm|full range and zero span

Absolute Accuracy*

HP 71450B/1B* (after user calibration)

HP 71452B* (after user calibration)

HP 71452B* (after user calibration, within 40 nm of cal signal) (Characteristic)

(Characteristic)

nm*

40



spans

for

Linearity

Span

(Characteristic)

nm)

1570

|

nm

(1530

71452B*

HP

Linearity

Span

minute)

Reproducibility

Tuning

uning

T

(1

Repeatability

minute),

HP

71452B*

(Characteristic)

Settability 0.005

Readout

Resolution

(Characteristic)

6

1nm

6

0.3 nm

6

0.2 nm

6

0.05 nm

0.05

6

0.02

6

0.005

6

0.001

6

0.005

0.001

6

Span

nm

ength

L

race

T

/

Resolution

Bandwidth

*

FWHM

nm) (Characteristic)

1570

|

nm

(1530

71452B

HP

setting,

nm

0.08

<

of

FWHM

Resolution

Accuracy:

nm|1600

1250

nm,



0.5

nm

0.1 nm|10 nm, 600 nm|1700 nm (Characteristic)

Corrected bandwidth accuracy for noise markers (1250 nm | 1600 nm):



0.5 nm

0.2 nm, HP 71452B (Characteristic)

122

Option

71452B

HP

nm,

0.2



* With applied input ber 9/125

y

Resolution of 10 nm is available in rst order

z

The 2.0 nm resolution

m.

only.

is nominally 2.5 nm in second order

.

0.08

<

sequence

0.065

20%

6

30%

6

3%

6

5%

6

nm

z

and

.

y

6

0.1

15%

nm|10 nm

in a

1,2,5

1-5

Specications and Characteristics

Specications:

HP 71450B/1B/2B (HP 70950B/1B/2B)

Amplitude

zz

Calibration Accuracy*

Scale Fidelity

z

,

y

at030 dBm, 1300 nm

Autorange O

Autorange On

Step Response Accuracy

2s after rising edge

10s after falling edge

Signal-to-Noise Measurement Accuracy

***

yyy

CW

Pulse mode

Display Resolution Log 0.01 dB

Linear 0.23% of

y Scale

Displa

x

Flatness

nm*

x

nm

x

nm

y

**

*,

,

y

olarization

P

olarization

P

Dependence

nm|1330

1290

nm|1570

1530

nm|1600

1250

750 nm|1600

nm|1700

600

71450B/1B/2B

HP

71452B

HP

6

0.5 dB

HP 71450B/1B HP 71452B

6

0.1 dB

6

0.2 dB

HP 71450B/1B HP 71452B

6

0.2 dB (Char.)

6

0.2 dB (Char.)

6

HP 71450B/1B HP 71452B

6

0.63 dB

6

0.68 dB

level

reference

of

measurement +

dB log

0

20

0.01

71450B/1B HP

HP

dB

0.25

6

dB

0.25

6

dB

1

6

(Char

dB

6

1.5

(Char

dB

2

6

nm|1600

1250

dB**

0.5

6

nm|1562

1542

dB

0.05

6

0.01%

linear

and

steps,

dB

0.01

in

.)

6

.)

dB

0.125

nm

(Char

dB

nm

nm|1600

750

*

1.5

6

nm|1320

1300

6

0.05 dB**

6

0.07 dB**

0.2 dB (Char.)

6

0.2 dB

6

0.18 dB

6

0.29 dB

71452B

0.25

6

dB

0.2

6

dB

1

6

(Char

dB

1.5

(Char

dB

2

6

x

.)

nm

dB

.)

600

6

nm|1700

(Char

dB

2.5

nm

x

.)

* With applied input ber 9/125m.

y

For resolutions0.2 nm.

z

With sample detector. Within 20 dB of the sensitivity noise limit, noise eects dominate and may be reduced with video averaging.

Scale delity is applied only once for marker delta measurements.

x

With applied input ber that is standard single mode at wavelength of interest.

emperature

T

**

zz

xx

***

yyy

ysical contact

ph

With

connector

,

quality

and

Between 1350 nm and 1420 nm absorption of

eects should be

With27 dB extinction ratio

1.15 x RSS of polarization sensitivity

range

20

<

1dB



30

to

C

connectors.

cleanliness,

.



.

C

Connector

temperature

.

variations

damage

,

light b

, scale delity

can

and wear

,

aect

amplitude

.

accurac

with such

varies

which

y

y atmospheric moisture aects atness. At room temperature

, and resolution bandwidth accurac

y (and step response accurac

as

factors

, total humidity

y in pulse mode).

connector

1-6

type

Specications and Characteristics

Specications:

HP 71450B/1B/2B (HP 70950B/1B/2B)

Sensitivity

*

600 nm|750 nm (second order only)

750 nm|900 nm (second order)

750 nm|900 nm (rst order)

900 nm|1200 nm

1200 nm|1600 nm

1600 nm|1700 nm

y

* Sensitivity is dened as signal value62the RMS noise value.

y

Temperature range 20Cto30C.

Dynamic

Excluding

Chop

Dynamic

Excluding

0.2 nm

In

0.2

In

0.1

In

0.1

In

y

Range

Multiple Order

On

Mode

HP

Range,

Multiple

resolution

nm resolution

resolution

nm

resolution

nm

(in

(Characteristic)

nm

0.1

Grating

71452B

Grating

Order

(Characteristic)

resolution)

Responses

Option

Responses

122

dB

70

0

y

1250

55 dB

0

60

0

6

at

1250

58 dB

0

65

0

60

0

65

0

60 dBm

0

75 dBm

0

65 dBm

0

75 dBm

0

90 dBm

0

80 dBm

nm|1600

at

dB

nm,

0.5

nm|1600

at

dB at

at

dB

at

dB

nm|1700 nm

nm

0.5

6

nm

1

6

nm

5

6

nm,

1

6

600

0

nm

1

6

at

dB

50

nm

0.5

6

nm

1

6

nm

0.4

6

nm

0.8

6

y

With

applied input

ber 9/125



m.

Input Power

0.05 dB Compression Level, Within Selected Resolution (Characteristic)

Maximum Displayed Level (Characteristic)

evel

L

Maximum Safe

Input



10 dBm



15 dBm

+20 dBm

per

total

dBm

+30

nm,

5

1-7

Specications and Characteristics

Specications:

HP 71450B/1B/2B (HP 70950B/1B/2B)

Input Return Loss with physical contact connectors

Fiber input size

: 9m

50m

62.5m

>

35 dB total (connector limited)

>

50 dB internal reections (Characteristic)

>

28 dB (Characteristic)

>

26 dB (Characteristic)

Sweep Time

(Characteristic)

Maximum Sweep Rate 40 nm / 50 ms

Maximum Sweep Rate in Zero Span 50s / trace point

Sweep Cycle Time

y

Sweep

ADC

rigger

T

c

ycle

Jitter

rigger Dela

T

y

includes

time

Accuracy

y Range

sweep

forward

(Characteristic)

50 nm span, auto zero o

nm span,

50

span,

nm

500

auto

span,

Full

sensitivity

dBm

80

0

sensitivity

dBm

90

0

plus overhead

time

auto zero

zero

auto

zero

between

on

30

,

30

,

on

nm

sweeps.

span,

auto

zero

<

180 ms

340 ms

<

ms

650

<

1s

<

on

s



0.5

6

ms



s|6.5

2

2s

<

35s

<

1-8

Additional Specications:

HP 71451B (HP 70951B)

Monochromator Insertion Loss

(into 62.5m ber)

(See characteristic plot)*

850 nm

1300 nm

1550 nm

<

19 dB

7dB

10 dB

Maximum Input Power +20 dBm per 5 nm; +30 dBm total

Characteristic

Monochromator

Loss

*

Second

order

selected when

is

the

stop

wavelength

nm.

10

is

resolution

and

nm

900

below

or

at

is

<

1-9

Specications and Characteristics

Additional Specications:

HP 71451B (HP 70951B)

WARNING

The light emitted from this connector is the ltered and slightly

attenuated light input to the front-panel

In the following instrument modes: preselector, stimulus response,

and photodetector test, light energy can radiate from the front-panel

MONOCHROMATOR OUTPUT

Monochromator Output

(into 62.5m ber)

Polarization Dependence*, for Resolutions0.2 nm

1250 nm|1600 nm

700 nm|1600 nm (Characteristic)

(Characteristic)

nm

Selections (FWHM)

for

y

accurac

that

ber

input



20

range

resolution

to

C

nominally

is



0.1

standard

is

30

nm,

0.5

nm|10nm,



.

C

2.5

Resolution

With

*

y

emperature

T

z

The

600 nm|1700

applied

nm

2.0

1250 nm|1600

600

mode at

single

second

in

nm

nm|1700

wavelength

.

order

connector.

nm

6

0.08

6

of

0.5 dB

1.5 dB

dB

2.5

nm and

20%

z

30%

interest.

y

MONOCHROMATOR INPUT

1,2,5

a

in

0.1 nm|10

nm

sequence

connector.

.

1-10

Specications and Characteristics

Additional Specications:

HP 71451B (HP 70951B)

Photodetector Input

(in power meter mode)

Accuracyat030 dBm* (ref to 1300 nm)

20Cto30C

0Cto55C

6

Maximum Safe Power Level +20 dBm

1 dB Compression Level

Scale Fidelity (for+2 dBm inputs)

y

For any Measurement with Fixed Reference Level

Dierent

with

Displa

or

F

y

og

L

Multiple

Resolution

Measurements

Reference

evels

L



6

0.01

Linear 0.23% of

setting)

ower

P

Maximum

Sensitivity

Flatness

Range

(for

(up

Displa

x

2



to

y

dBm

50

ed

dB

el

v

Le

input)*

reference

y

an

in

(Characteristic)

level

0.35 dB

0.5 dB

+7 dBm

0.1 dB

dB

0.2

dB

1250

measurement

nm|1600 nm

dBm

10

dBm

95

0

dB

0.4

6

+

0.01%

reference

of

600

level

nm|1700

dBm

10

dBm

85

0

dB

2

6

nm

z

Transimpedance Input

Current Range 0to010 mA

Maximum Current

Maximum Voltage

Input Impedence

applied

With

*

y

To within 20 dB of the sensitivity noise limit.

z

Flatness for 1650 to

x

Sensitivity applies within 1 minute of last zeroing.

(Characteristic) 270



m.

9/125

ber

input

1700 nm applies for ambient temperature from 20

6

10 mA

6

10 V



Cto30C only

.

1-11

Specications: Optional Current Source

Current Output (Option 001)

Range 0to6200 mA (source or sink)

Resolution (Characteristic) 50A steps

Accuracy 2%650A

Clamp Voltage (nominal)

Noise Density at 1 kHz (Characteristic)

Stability Within 30 Minutes (Characteristic)

(Characteristic)

Mode

Range

Resolution

Cycle

Drift

Range

T

Pulse

Duty

emperature

6

2.7 V

<

4nA/pHz

<

100 ppm6500 nA

ppm

(100

<

to 6.5



s

10

ns

100

width/1

pulse

nA)/

500

6

ms

100%

to

s



C

1-12

Specications:

Optional Built-In White Light Source

Light Source Output (Option 002)

Wavelength* 900 nm to 1700 nm

Minimum Output Power Spectral Density (9/125m ber)

900 to 1600 nm

900 to 1600 nm (typical)

1600 to 1700 nm

0

67 dBm/nm (0.2 nW/nm)

0

64 dBm/nm (0.4 nW/nm)

0

70 dBm/nm (0.1 nW/nm)

Minimum Output Power Spectral Density (characteristic)

y

Output Stability (Characteristic)

mean time

Lifetime,

Lamp

Stimulus

Passive

(with

Measurement

Dynamic

Measurement

Response

Optical-to-Optical

HP

System

71450B/1B/2B

70950B/1B/2B

Range

(characteristic)

Range

Accurac

between

Specications

Devices

OSA)

z

y

50/125m ber

62.5/125mber

(Characteristic)

(MTBF)

failures

RBW

nm

10

RB

nm

10

RB

10 nm

to

nm

0.5

0

50 dBm/nm (10 nW/nm)

0

46 dBm/nm (25 nW/nm)

6

0.02 dB over 10 minutes

hours

>

5000

nm

1600

to

1250

ber

m

9/125



dB

33

to

0

typical)

(36 dB

W

dB

36

W

RB

nm

10

dB

0.1

6

Optical-to-Electrical Devices

(with HP 71451A or HP 70951A OSA)

Minimum Responsivity (characteristic) Rshunt>1M 0.01 A/W 0.01 A/W

Accuracy (characteristic)

z

6

0.9 dB

to

900

62.5/125

30

to

0

40

to

0

(900|1000

dB

24

(1000|1600

36 dB

(1600|1700

dB

9

dB

0.2

6

0.9 dB

1700

or

dB

nm



50/125

(1000|1600

nm)

ber

m

nm)

y

z

averaging. F

power

Includes

Does not include connector repeatability or eects of noise on measurement. Noise eects can be reduced with video

or multimode-ber measurements assume DUT does not

in full

numerical

aperture

.

ber

of

modify mode structure

.

nm.

850

below

Filtered

*

ltering or video

1-13

Specications: Optional Swept Polarization

Dependent Loss Kit

Swept PDL System Specications (HP 71451B Option 003) 1250 to 1600 nm

(with HP 71451B or HP 70951B OSA containing Option 002, Built-In White Light Source)

Accuracy*

O/O Devices (external photodetector) +0.1/00.05 dB

O/O Devices (internal photodetector) (characteristic) +0.2/00.1 dB

O/E Devices (characteristic) +0.075/00.025 dB

Polarizer Extinction Ratio

dB

30

to

0

Assumes

*

Measurement

polarization

Range

controller

(characteristic)

all

covers

desired

states

polarization.

of

loss.

dB

5

than

less

with

devices

or

F

1-14

General Specications

Inputs Outputs

Optical Output (HP 71451B or HP 70951B) 62.5m ber

Optical Input (HP 70950B/1B) Multimode ber, standard

Optical Input (HP 70952B) 9mber

Optical Connectors FC/PC standard; other interface adapters available

Rear-Panel Connectors SMB (electrical)

Dimensions

HP 71450B/1B/2B 222 mm high2425.4 mm wide2526 mm long

in)

20.7

2

in

16.75

2

in

(8.75

70950B/1B/2B

HP

Standard

4/8-width

module

Weight

71450B/1B/2B

HP

70950B/1B/2B

HP

Environmental Operational

Temperature 0Cto

Humidity

Shock and

Vibration

Tested

to

95%

<

MIL-T-28800D

28

8

+55

R.H.

class

kg

(61.6

(17.6 lb)



C

par

5

.

3.7.4,

3.7.5.2

and

3.

Storage



40

0

Cto

Noncondensing

+71



C

lb)

EMI Conducted and radiated interference is in compliance with CISPR Pub 11 and MIL-STD 461C

part 7 CE03 (AF) and RE02.

Requirements

ower

P

71450B/1B/2B

HP

Hz

Hz|444

356

and

oltage

V

Maximum P

Frequenc

ower

y

87|132

174|264 V

47

,

AC

V

AC, 47 Hz|66 Hz

260 W maximum

Hz

Hz|66

(350 VA maximum)

1-15

Regulatory Information

The information on the following page applies to the HP 70950B/1B/2B optical

spectrum analyzer product.

1-16

Specications and Characteristics

Regulatory Information

1-17

Specications and Characteristics

Notice for Germany: Noise Declaration

LpA<70 dB

am Arbeitsplatz (operator position)

normaler Betrieb (normal operation)

nach DIN 45635 T. 19 (per ISO 7779)

1-18

2

Menu Maps

The menu maps that are in this chapter graphically represent the softkey

menus that are located under the

4

MENU

5

key. Maps for each left-side softkey

are shown in alphabetical order. Menu maps contain the following features:

2-2

Menu Maps

Contents

Amptd Menu

BW, Swp Menu

Marker Menu

Misc Menu

State Menu

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

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

Traces Menu

Waveln Menu

4

5

Menu's DFB Advanced Measurement Program

USER

4

5

Menu's FP Advanced Measurement Program

USER

4

5

Menu's LED Advanced Measurement Program

USER

4

5

Menu's Optional PDL Advanced Measurement Program

USER

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

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

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

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

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

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

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

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

:::::::::

2-4

2-5

2-6

2-8

2-10

2-12

2-13

2-14

2-15

2-16

2-17

2-3

Amptd Menu

Menu Maps

2-4

BW, Swp

Menu

Menu Maps

BW, Swp Menu

2-5

Marker Menu

Menu Maps

Marker Menu

2-6

This page is intentionally left blank.

Menu Maps

Marker Menu

2-7

Misc Menu

Menu Maps

Misc Menu

2-8

Misc menu

(cont'd)

Menu Maps

Misc Menu

2-9

State Menu

Menu Maps

State Menu

2-10

State menu

(cont'd)

Menu Maps

State Menu

2-11

Traces Menu

Menu Maps

Traces Menu

2-12

Waveln Menu

Menu Maps

Waveln Menu

2-13

4

5

USER

DFB

Advanced

Measurement

Program

Menu's

Menu Maps

4

5

Menu's DFB Advanced Measurement Program

USER

2-14

4

5

USER

FP Advanced

Measurement

Program

Menu's

4

5

Menu's FP Advanced Measurement Program

USER

Menu Maps

2-15

4

5

USER

LED

Advanced

Measurement

Program

Menu's

Menu Maps

4

5

Menu's Optional PDL Advanced measurement Program

USER

2-16

Menu Maps

4

5

USER

Menu's

PDL

Advanced

Measurement

Program

This program is available on HP 71451B (HP 70951B) instruments as Option

003.

2-17

Menu Maps

3

Dictionary

Reference

Dictionary Reference

This chapter is a dictionary reference of front and rear-panel connectors,

front-panel keys, and softkeys. With the exception of a few front-panel keys,

softkeys control all instrument functions. Refer to the display's operating

manual for information on softkeys located under the

4

DISPLAY

5

key.

This chapter is designed for quick access of information. For example,during

operation you may nd a softkey or hardkey whose function is unfamiliar

to you. Note the key name, nd the key in this chapter, and read the

a

denition.

brief

softkey.

functions.

with

begin

E

OT

N

Throughout

modules

In

This occurs

Make sure

a symbol

chapter

this

congured

with

several

places

whenever two

you have

are listed

71450B/1B/2B

HP

,

70004A

HP

the

you

sofkeys have

found the

front

the

at

refers

.

y

displa

nd

will

applicable

the

to

multiple

the

of

70950B/1B/2B

HP

same

the

denition.

chapter

denitions

name

.

optical

for

but

eys

K

spectrum

dierent

that

analyzer

3-2

Alphabetical Listing

45

Use the



485

The

sweeptime

pressing

45

(backspace) key for the following uses:

backspacing the

displaying previous

4

5

9

increase

keys

step

the

is

4

decreases

5

9

415

custom-keypad

This

Delta

markers

allow

cursor while

softkey menus

decrease

or

active

parameter

the

activates

key

to

you

sweep

entering

.

active

pressing

,

.

time

NNNNNNNNNNNNNNNNNNN

N

the

Marker

compare two

text.

parameter

4

increases

5

8

menu's

values

trace

values

NNNNNNNNNNNNNNNN

N

DELTA

both

in

.F

the

example

or

sweep

function.

trace

,

time;

domains

if

.

3-3

Dictionary Reference

Alphabetical Listing

See Also

Path

ey

K

DELTA

in this chapter.

1/T

Softkey that congures marker readouts to show marker position as the

inverse of the marker sweep-time position.

NNNNNNNNNNN

sweep

determine

to

single

the

of

cycle

periodic

Pressing

the

at

time

frequency

signal.

Then,

the

of

1/T

marker

periodic

a

selecting

softkey

zero

In

.

N

selects

span,

signal.

N

1/T

marker

this

delta

Use

readouts

function

markers

shows

can

frequency

the

as

to

the

be

mark

inverse

used

a

signal.

N

Press

Marker

3-DIMEN

N

NN

N

,

MORE

On

N

O

N

NN

N

of

1

N

,

4

MORE

NN

N

2

N

of

N

4

N

,

marker

N

NN

readout

N

,

N

1/T

the

of

N

.

Softkey that

views the

3-dimensional display

.

Three-dimensional views provide a graphic measurement history. They oer

a view of the input spectra over time. The optical spectrum analyzer displays

successive traces with each trace slightly oset. This gives a 3-dimensional

\look" with the third dimension showing changes in signal response with

time. New traces are placed at the front of the 3-dimensional view as older

.

position.

may

appear

sluggish.

This

sweeps

With

is

Use the

response to front-panel controls

with the

progressively

3-dimensional

due to the additional time required to obtain and display the trace data.

fastest sweeps possible to increase the optical spectrum analyzer's

NNNNNNNNNNNNNNNNNNNNNNNNN

3-DIMEN On Off

move to

displays,

NNNNNNNNNNNNNNNNNNN

the

front-panel

control

. Decreasing the number of three-D levels

softkey also helps

background

last

3-4

3-Dimensional Default Values

Default Value Limit

Dictionary Reference

Alphabetical Listing

Path

ey

K

Programming

Traces

Horizontal Oset

Vertical Oset

16 limited by available internal memory (100 maximum)

4

10

6

200

6

200

Normally, 16 traces are displayed to provide the 3-dimensional view.

However, you can increase or decrease the number of traces. The number of

traces that can be displayed is limited by the amount of available internal

increase

you

display

N

that

the traces

large as

.

N

NN

N

of

3

to

helps

be

can

200

N

,

4

memory

internal

Changing

optimize

entered,

N

Press

Traces

N

3-DIMEN

. Viewing

memory

vertical

the

3-dimensional

the

values

NN

N

,

N

NN

N

Off

On

large

deleting les

by

or

30

of

N

MORE

N

.

numbers

horizontal

and

less are

N

NN

N

of

1

eect.

N

,

4

traces

of

.

osets between

Although

normal for

N

NN

N

MORE

2

N

of

may

N

proper

N

require

osets as

N

,

4

MORE

THREED

A



A

0

B

Softkey that subtracts Trace B from Trace A point by point, then stores the

results

If

sweep.

a reference level adjustment.

0

places trace A at

in

trace

A

is in

clear-write

mode

function

this

Results of the subtraction are referenced to 0 dB

, if the reference level is set at

40 dBm, Trace A is at

0

5dB

For example

0

50 dBm, and Trace B is at

. Because this is o screen,

continuous

is

and

. This often requires

NNNNNNNNN

0

55 dBm,

A

the reference level needs

occurs

NNNNNNNNNNNNNNNNNNNNNN



every

A-B

A.

Trace

to be adjusted.

3-5

Dictionary Reference

Alphabetical Listing

This process occurs with each sweep. Placing the optical spectrum analyzer

in single sweep mode allows you to view the results of the trace math. Trace

math is mainly used to normalize the display during stimulus-response

measurements.

Key Path

Related Programming

Command

Path

ey

K

Programming

Press

AMB

A



Softkey

trace

in

results

The

placed

is

A

during

Press

APB

NNNNNNNNNNNNNNNNNNNN

Traces

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

A+B

trace

adds

that

A.

function

this

of

mode

view

in

stimulus-response

N

NN

Traces

N

,

N

NN

MORE

N

and

A

often

Trace

.

measurements

N

NN

N

of 4

1

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

trace logmath

point

B

trace

mainly

is

a

requires

math

.

N

NN

,

oneshot

N

NN

N

math

,

point, then

by

reference

used

N

NN

,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

A



A-B

stores the

level

to normalize

N

NN



A

N

A+B

.

adjustment.

the

N

.

results

Trace

display

A



Softkey

If trace

sweep.

3-6

(A0B)0C

that

subtracts

both

trace

trace C

and

B

from

A.

trace

A is in clear-write mode this function is continuous and occurs every

Dictionary Reference

Alphabetical Listing

Key Path

Related Programming

Command

Path

ey

K

Programming

NNNNNNNNNNNNNNNNNNNN

Press

Traces

AMBMC

A



(A

Softkey

display

The

addition,

trace

Press

AMBMCPL

that

line

trace

taken.

is

N

Traces

0B)0

subtracts

.

math

initial

an

N

NN

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

C+DL

both

performed

is

application

N

,

N

MORE

N

NN

N

1

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

trace logmath

trace

and

B

trace

point

trace

each

on

function

the

of

N

4

of

N

,

trace

N

NN

N

logmath

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

A

from

C

as the

performed

is

N

NN

N

,

A

trace

N



(A-B)-C

A,

trace is

before

N

NN

N

(A-B)-C+DL



then

formed. In

N

.

adds

the

NN

N

.

the

B+DL

0

A



A

Softkey that subtracts trace B from trace A point by point, adds the value

of the display line, and then stores the results in trace A. Use this function

when placing the results of trace subtraction at a specic location.

N

NN

on the

turn

o

T

then

and

knob to position the display line

result of the trace subtraction to be located.

If trace A

sweep. This function is eective when wanting to place the results of trace

subtraction at a specic location. The process is continuous and occurs with

display

NN

N

NN

N

LIN

DSP

is in clear-write mode this function is continuous and occurs every

line

N

NN

N

NN

N

On

Off

Traces

N

that

so

. Place the display line where you desire the

N

NN

On

N

press

,

N

,

MORE

underlined.

is

N

NN

N

NN

N

of

1

4

Use

,

the

N

MORE

N

NN

N

2

front-panel

N

NN

N

4

of

3-7

,

Dictionary Reference

Alphabetical Listing

each sweep. Placing the optical spectrum analyzer in single sweep mode

allows you to view the results of the trace math. Trace math is mainly used

to normalize the display during stimulus-response measurements.

Key Path

See Also

Related Programming

Command

N

NNNNNNNNNNNNNNNNNNN

Press

Traces

DSP LIN On O

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

in this chapter.

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

trace logmath

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

A



A-B+DL

.

AMBPL

C

0

A



A

requires

set

N

NN

N

A

the

every

at

N

-

needs

N

C

Softkey

results

If

sweep

a

0

places

to

in

trace

.

reference

dBm,

40

trace A

be adjusted.

that

Trace

in

is

A

Results

level

trace

subtracts

A.

clear-write

the

of

adjustment.

is

A

5

0

at

C

Trace

mode

subtraction

dBm,

55

0

at

Because

.

dB

from

or

F

this

Trace

function

referenced

are

example

trace

and

is

this

,

o

point

A

is

the

if

is

C

screen,

point,

by

continuous

.

dB

0

to

reference

dBm,

0

50

at

reference

the

and

This

level

then

often

N

A

stores

occurs

is

N



level

Placing the optical spectrum analyzer in single sweep mode allows you to

view the results of the trace math. Trace math is mainly used to normalize

the display during stimulus-response measurements.

N

Key Path

Programming

Press

AMC

3-8

NNNNNNNNNNNNNNNNNNNN

Traces

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

trace logmath

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

A



A-C

.

Dictionary Reference

Alphabetical Listing

A



A

0

C+DL

Softkey that subtracts trace C from trace A point by point, adds the value of

the display line, and then stores the results in trace A.

This function is eective when wanting to place the results of trace

subtraction at a specic location. The process is continuous and occurs with

each sweep. Placing the optical spectrum analyzer in single sweep mode

allows you to view the results of the trace math. Trace math is mainly used

to normalize the display during stimulus-response measurements.

N

NN

N

T

then

and

position

to

knob

the

of

result

N

Path

ey

K

Press

Traces

N

NN

N

DSP

NN

N

trace

N

LIN On

N

,

MORE

display

the

on

turn

o

line

N

NN

N

display

the

subtraction

N

NN

N

1

N

Off

N

of

N

that

so

.

line

to

N

4

N

,

trace

Place

be

N

NN

N

On

the

located.

N

NN

N

logmath

Traces

N

press

,

N

,

MORE

is underlined.

display

N

NN

N

of

1

line

N

NN

N

,



A

,

4

Use the

where

N

NN

N

A-C+DL

N

MORE

N

NN

N

2

front-panel

desire

you

N

.

N

of

N

,

4

the

Also

See

Related Programming

Command

B

this

.

function

in

linear

display

allows

mode.

It

. If a division by

performed

ratio

3-9

chapter

this

in

O

On

LIN

DSP

AMCPL

A



A*DL/(A+B)

Softkey that multiplies trace A by the display line and then divides the result

and

traces

of

sum

the

by

proper

or

F

measurements to be made as a sweep is taken. If trace B has points near the

bottom of the screen, overow or poor precision can occur

zero is attempted, a division by the smallest representable value is

instead.

operation,

A

use

Dictionary Reference

Alphabetical Listing

To ensure that correct data is displayed, be sure that a sweep is taken before

using this function.

Key Path

Related Programming

Command

Path

ey

K

NNNNNNNNNNNNNNNNNNNN

Press

Traces

ADAPBTL

A

Softkey

by

F

A*DL/(A+B+C)



that

of

sum

the

or

proper

operation,

measurements

the

bottom

zero

of

attempted,

is

instead.

ensure

o

T

using

Press

that

function.

this

N

NN

Traces

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

multiplies

traces

A,

use

made

be

to

screen,

overow

division

a

correct

N

,

N

NN

MORE

N

trace

B

data

N

1

and

,

this

as

is

NN

N

of 4

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

trace linmath

display

the

by

A

C.

function in

sweep is

a

or

the smallest

by

displayed,

N

NN

,

trace

taken.

poor precision

be

N

linmath

,

line

display

linear

If

can

representable

that

sure

N

NN

N

,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

A



A*DL/(A+B)

divides

then

and

allows

It

.

mode

points

has

B

trace

division

a

If

.

occur

is

value

taken before

is

N

NN

N

A*DL/(A+B+C)

NN

A

NN

a

N

NN



sweep

N

.

result

the

ratio

the

near

by

performed

NN

N

.

Related Programming

Command

ADAPBPCTL



A

A*DL/B

Softkey that multiplies trace A by the display line value

result by trace B

.

3-10

, then divides the

Dictionary Reference

Alphabetical Listing

For proper operation, use this function in linear display mode. It allows ratio

measurements to be made as a sweep is taken. If trace B has points near the

bottom of the screen, overow or poor precision can occur. If a division by

zero is attempted, a division by the smallest representable value is performed

instead.

To ensure that correct data is displayed, be sure that a sweep is taken before

using this function.

Key Path

See Also

Key Path

Programming

Press



A

NNNNNNNNNNNNNNNNNNNN

Traces

A*DL/C

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

chapter

this

in

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

trace linmath

.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

A



A*DL/B

.

ADBTL

A*DL/C



A

can

the

Chas

occur

.

value

Softkey

by

result

proper

or

F

points

a

near the

division by

multiplies

that

trace

operation,

C.

bottom

zero

trace

use

of

attempted,

is

this

the

by

A

function

screen,

a

display

the

in

overow

division

linear

the

by

line

display

or

,

value

precision

poor

smallest

divides

then

If trace

.

mode

representable

is performed instead. To ensure that correct data is displayed, be sure that a

sweep is taken before using this function.

Press

NNNNNNNNNNNNNNNNNNNN

Traces

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

trace linmath

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

A



A*DL/C

.

If

Also

See

Related Programming

Command

A*DL/B



A

ADCTL

in

this

chapter

.

3-11

Path

ey

K

Programming

Dictionary Reference

Alphabetical Listing

A



DL*(A+B)/C

Softkey that multiplies the sum of traces A and B by the display line.Then,

this result is divided by trace C. The nal results are stored in trace A.

For proper operation, use this function in linear display mode. If trace A is in

clear-write mode, the function is continuous and occurs every sweep. Only

one trace math operation may be active at any given time. If trace C has

points near the bottom of the screen, overow or poor precision can occur.If

a division by zero is attempted, a division by the smallest representable value

performed instead.

is

sweep

Press

is taken

NN

N

Traces

N

NN

,

ensure

To

before using

N

NN

N

MORE

of

1

that

this function.

N

4

N

,

trace

N

correct

NN

N

linmath

data

N

is

NN

N

,

displayed,

NN

N



A

be

NN

N

NN

DL*(A+B)/C

N

NN

.

a

that

sure

APBDCTL

Path

ey

K

Related Programming

Command

A METER

Softkey that

On O

displays the

power level

of

the

trace

point

currently

being

measured at the optical spectrum analyzer's input.

The displayed value shows the amplitude level for the last acquired trace

point. This feature is automatically turned on whenever HP 71451B optical

spectrum analyzers are in the Power Meter instrument mode.

Press

N

NN

N

Amptd

N

NN

N

NN

N

NN

N

,

MORE

N

NN

N

of

1

N

,

4

MORE

N

NN

N

NN

2

N

NN

N

4

of

,

NN

N

A

N

METER

N

NN

N

On

N

NN

N

NN

Off

.

N

AMETER

3-12

Dictionary Reference

Alphabetical Listing

A UNITS AutoMan

Softkey that selects the display units for the amplitude scale.

Normally, the optical spectrum analyzer automatically selects the amplitude

units according to whether the scale is logarithmic (dBm) or linear (watts). In

this condition,

key to manually select the display units,

NNNNNNNNNNNNNN

Auto

in the softkey label is underlined. When you use this

NNNNNNNNNNN

Man

is underlined. You can select

either units in dB or Watts.

Path

Key

Related Programming

Command

ey Path

K

Related Programming

Command

Press

UNITS

A

XCH

A

Softkey

Press

AXB

XCH C

A

N

Amptd

B

that

N

Traces

N

,

units menu

exchanges

NN

N

,

N

MORE

N

NN

N

NN

N

1of

NN

the

NN

N

NN

N

,

A UNITS

contents

N

,

4

N

of

N

oneshot

N

NN

AutoMan

trace

NN

N

math

NN

N

Aand

N

,

.

trace B

N

A

NN

N

XCH B

registers

N

NN

.

Softkey that exchanges the contents of the trace B and trace C registers

.

3-13

Dictionary Reference

Alphabetical Listing

Key Path

Related Programming

Command

NNNNNNNNNNNNNNNNNNNN

Press

Traces

AXC

ACT

Front-panel

active

The

displayed.

being

system.

the

CTIVE

A

Softkey

that

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

indicator

CT)

(A

The

MARKER

selects

the

light.

lights

indicator

active

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

oneshot math

whenever

operative

only

is

marker

.

NNNNNNNNNNNNNNNNNNNNNNN

,

AXCH C

optical spectrum

the

when

.

there is

analyzer is

a display

in

Key Path

ve markers

Up to

displayed, use

or

F

changes

then

.

NNNNNNNNNNNNNNNNN

ENTER

NNNNNNNNNNNNNNNNNNNN

Press

Marker

3-14

can be

this softkey

example

,

.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

simultaneously

to select

marker

select

to

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 2 of 4

which

2,

displayed.

marker

press

is

N

ACTIVE

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

ACTIVE MARKER

active

N

multiple

If

N

NN

N

MARKER

for

N

markers

front-panel

N

NN

N

4

,

and

,

5

2

.

are

Dictionary Reference

Alphabetical Listing

adc sync

Softkey that presents a menu for synchronizing an external light source,

that has pulse modulation capability, with the optical spectrum analyzer's

analog-to-digital converter.

This menu controls a TTL signal available at the rear-panel

ADC SYNC OUT

connector. (The connector has a 50  output impedance.) You can adjust the

signal's pulse width and duty cycle. Pulse width determines the time that the

light source is turned on. Duty cycle determines the ratio of \on" and \o"

percentage:

a

as

e

cl

cy

OUT

must

cycle is

may increase

analyzer

selecting

aects

the

aects

analyzer



pul

=

pul

output

be greater

than

less

to perform

pulse width

average

power

the



idth

w

se

per

se

be

to

100%,

slightly

iod

active

than

(

100

nm.

0

this

during

,

various

and

power

dissipated

produced

measurements

)

optical

the

(When

output

is

measurements

internal

cycle

duty

by

light

the

by

performed

are

spectrum

span

the

disabled.)

.

tasks

values:

light

the

source

near

analyzer's

set

is

allow

to

Consider

source.

during its

the

nm

0

to

the

\on"

trailing

the

is entered

ADC

time and

or

F

wavelength

duty

the

and

pulse

The

optical

spectrum

following

cycle

Duty



width

Pulse



.

time

Optical



duty

SYNC

span

period

when

spectrum

edge of the pulse.

Pulse widths can range from 1sto6.5ms. However, not all combinations

of pulse widths and duty cycles are available. The optical spectrum analyzer

limits and adjusts these parameters as needed to maintain the following

conditions:

.

s



200

least

at

for

o

be

must

Pulse



Sweep time cannot be longer in seconds than the number of trace

measurement points

For pulsed measurements

.

, sweep times cannot be longer than 1 second per

trace point. This is 800 seconds for the default value 800 trace points

.The

3-15

Dictionary Reference

Alphabetical Listing

following equation shows how sweep time is approximately related to trace

length, pulse width, and duty cycle:

sweep time

'(trace length



(

pulse width)(100

)

duty cycle



)

UNCAL

indicates narrow pulses

Although the pulse widths can be set as narrow as 1s, if the width is too narrow for the optical

spectrum analyzer's circuitry, the displayed response may not faithfully represent the input light. To

indicate this condition, the

video-bandwidth

The

still

while

used

be

dependent

bandwidth

determined

is

by

dB-per-division

minimum

The

.)

mode

UNCAL

setting

maintaining

on

reference-level

logarithmic

setting

in

pulse

message is displayed.

minimum

the

limits

amplitude

an

screen

of

top

the

position,

mode

widths

available

pulse

calibrated

amplitude

reference

the

and

shown

are

width

display

level

and

level,

reference

the

in

can

that

(Video

.

which

the

level

following

in

Video Bandwidth Minimum Recommended

Width

Pulse

700

600

kHz

s



1

s



1

60 kHz 10s

20 kHz 30s

200 Hz 3ms

linear

table

.

Path

ey

K

See Also

N

NN

N

Press

State

OSA PULSE

3-16

N

,

N

NN

N

MORE

N

in this chapter

N

NN

N

NN

N

of

1

4

N

,

instr

N

NN

N

NN

N

NN

N

modes

N

,

N

OSA

N

NN

N

NN

N

PULSE

N

,

N

adc

N

NN

N

sync

N

NN

N

.

Dictionary Reference

Alphabetical Listing

ADC SYNC OUT

A rear-panel output connector.

A TTL/CMOS compatible output which allows the user to synchronize an

event external to the instrument (such as DUT power) to the instrument data

acquisition. This is useful for laser chip testing where power dissipation

prohibits continuous operation. There is one output pulse for each horizontal

point (bucket) on the display variable from 1s to 6.5 ms in 100 ns steps.

The connector is a standard SMB coaxial male jack with its outer conductor

50

a

connected directly

output impedance

to the

.

rear

panel

(earth

ground).

The

connector

has



trigger

adc

analyzer

source

is

pulsed

a

softkeys

that

Softkey

to

The

converter

connected

presents

light

in

(ADC).

the

to

a

.

source

menu

the

TTL-compatible

The

rear-panel

menu

select

synchronizing

for

the

TRIG

EXT

type

trigger

IN

the optical

triggering

of

signal

connector

from

.

for

spectrum

analog-to-digital

the

light

the

Softkey Type of Triggering

ADCTRIG FREE External triggering is ignored. The ADC is triggered

during sweeps by the optical spectrum analyzer's

internal clock.

external

the

edge

of

the

external

ADCTRIG

POSEDGE

NEGEDGE

ADC

trigger

ADC

triggered

is

signal.

is triggered

by

rising edge

the

falling

the

trigger signal.

ADCTRIG A

C ADC is

edges of the external trigger signal.

alternately triggered by rising and lling

The amplitudes

measured on opposite edges are subtracted and

3-17

Dictionary Reference

Alphabetical Listing

the absolute value of the result becomes the trace

amplitude value.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

The

adc trigger

menu also allows you to delay internal and external ADC

triggering from the start of the sweep. Refer to

chapter.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

ADCTRIG DELAY

in this

External trigger

frequency can aect

measurement accuracy

v

the

ideo

void oversweeping

A

bandwidth

video

When using external ADC triggering in non-zero spans, the frequency of the

external trigger signal can aect measurement accuracy. The trigger signal's

frequency must be greater than

time

may

sweep

displayed

not

to

)

:

required

be

combination of

where

too

the

Sweep

video

sweep

over

to

estimate

the

1.5.

instead

of

trace length

fast

displayed. This

is

external trigger

bandwidths

actual

the

actual

video

doesn't

are

video

If

the

and

some cases

In

trigger

ADC

sweep

warning

occur

When

not

time

is

often

using external

accurate and

bandwidth.

uency

eq

r

f

factor as

,a

is

rate

warning

the

,

reported

enough.

care

the

Use

1:5(trace length

>

high

low

too

message

for

once

triggering,

ADC

must

following

eep

sw

as

the

for

every

taken

be

equation

2.0

current

16005

bandwidth:

bandw

idth

actor

(

)

displ

ay

(

f



ed

bw

(

)

27

exter

000

;

nal

tr

ig

ger

fr

eq

uency

)

where:

factor

is a function of the external trigger frequency.

factor

is always

less than 1.0 and may be as low as 0.5.

To obtain the proper sweep time, estimate the actual video bandwidth (as

value

bandwidth

returned

described

setting.

that

computer

the

above),

Then,

is

and

the

then

examine

proper

set the

the

sweep

optical

coupled

time

spectrum

sweep

setting.

time

analyzer's

The

.

to

Key Path

Press

3-18

N

NNNNNNNNNNNNNNNNN

NN

BW Swp

NNNNNNNNN

NNNNNNNN

State

N

NNNNNNNNNNNNNNNNNNNNNNNNN

NN

,

MORE 1 of 3

NNNNNNNNNNNNNNNNNNNNNNNNN

NNNNNNNN

,

MORE 1 of 4

N

NNNNNNN

NNNNNNNNNNNNNNNNNNNNNNNNN

NN

,

MORE 2 of 3

NN

NNNNNNNNNNNNNNNNNNNNNNNNN

NNNNNNNN

,

instr modes

N

NNNNNNN

NNNNNNNNNNNNNNNNNNNNNNNNN

NN

,

adc trigger

NN

NNNNNNNNNNNNNNNNNNNNN

NNNNNNNN

,

OSA PULSE

NNNNNNN

.

NNNNNNNNNNNNNNNNNNNNNNNNN

NNNNNNNN

,

adc trigger

NN

.

Dictionary Reference

Alphabetical Listing

See Also

Related Programming

Command

Path

ey

K

ADCTRIG AC,ADCTRIG DELAY,ADCTRIG FREE,ADCTRIG NEGEDGE

ADCTRIG POSEDGE

ADCTRG

ADCTRIG AC

selects

trigger

absolute

N

NN

N

that

signal.

N

NN

N

State

N

AC

N

Swp

BW

N

NN

N

AC

occurs

value

N

,

N

.

N

NN

N

,

N

.

N

Softkey

The

trigger

the

Press

N

ADCTRIG

Press

N

ADCTRIG

in this chapter.

external

alternately

amplitudes

The

the

of

N

NN

N

1

MORE

NN

N

MORE

N

1

ADC triggering.

on the

measured

result

N

NN

N

of

N

of

N

,

4

instr

N

,

3

becomes

N

NN

N

MORE

rising and

opposite edges

on

trace

the

N

NN

N

modes

N

NN

N

3

of

2

falling edges

amplitude

N

NN

N

,

N

OSA

,

N

adc

N

PULSE

N

trigger

are subtracted

NN

N

,

N

NN

N

on the

value

N

NN

N

adc

N

external

.

N

trigger

,and

N

NN

N

and

N

Also

See

Related Programming

Command

trigger

adc

ADCTRG AC

ADCTRIG

Softkey that delays external triggering of the analog-to-digital

(ADC) after the trigger edge

this chapter

in

DELA

.

Y

.

converter

3-19

Dictionary Reference

Alphabetical Listing

Key Path

See Also

Related Programming

Command

Path

ey

K

NNNNNNNNNNNNNNNNN

Press

State

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

ADCTRIG DELAY

NNNNNNNNNNNNNNNNNNNN

Press

BW Swp

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

ADCTRIG DELAY

adc trigger

ADCTRGDLY

ADCTRIG

Softkey

N

Press

State

N

NN

N

ADCTRIG

N

Press

BW

N

NN

N

ADCTRIG

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

,

in this chapter.

FREE

selects

that

N

FREE

N

Swp

NN

N

FREE

N

,

MORE

N

NN

N

,

N

NN

.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

MORE 1 of 3

.

N

of 4

NN

N

1

N

NN

N

of

N

triggering

N

3

N

.

N

MORE

.

internal

N

1

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

instr modes

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 2 of 3

of

N

,

instr

N

,

N

MORE

N

modes

NN

N

2

N

NN

N

NN

the

N

of

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

OSA PULSE

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

adc trigger

ADC.

N

,

N

,

3

N

OSA

N

adc

N

PULSE

N

trigger

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

N

NN

N

,

N

NN

N

adc trigger

N

NN

N

trigger

adc

N

See Also

Related Programming

Command

adc trigger

ADCTRG FREE

3-20

in this chapter.

Dictionary Reference

Alphabetical Listing

ADCTRIG NEGEDGE

Softkey that selects external ADC triggering.

The trigger occurs on the falling edge on the external trigger signal.

Key Path

Also

See

Key Path

Programming

NNNNNNNNNNNNNNNNN

Press

State

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

ADCTRIG NEGEDGE

NNNNNNNNNNNNNNNNNNNN

Press

BW

N

NN

ADCTRIG NEGEDGE

adc trigger

ADCTRG

ADCTRIG

Softkey

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

Swp

MORE

N

NN

in this

NEGEDGE

POSEDGE

that selects

.

of

1

N

NN

N

.

chapter

.

external ADC

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

instr modes

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

3

MORE

2

triggering.

of

,

3

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

OSA PULSE

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

adc

trigger

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

adc trigger

The trigger occurs on the rising edge on the external trigger signal.

NNNNNNNNNNNNNNNNN

Press

State

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

ADCTRIG POSEDGE

N

Press

BW

N

NN

N

ADCTRIG

N

NN

N

Swp

N

NN

N

POSEDGE

,

NN

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

MORE 1 of 4

.

,

NN

N

MORE

N

of

1

N

NN

N

NN

N

.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

instr modes

N

NN

N

3

,

NN

N

MORE

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

OSA PULSE

N

NN

N

NN

N

,

3

of

2

N

adc

N

NN

N

trigger

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

N

NN

N

adc trigger

N

NN

N

See Also

adc trigger

in this chapter

.

3-21

Dictionary Reference

Alphabetical Listing

Related Programming

Command

Path

ey

K

Also

See

Programming

ADCTRG POSEDGE

ALIGN PRESET

Softkey that returns alignment to factory default settings.

Improper alignments occur if the alignment signal is removed during the

Pressing

optical

N

NN

N

Misc

ALIGN

.

N

NN

spectrum

N

menu's

N

,

MORE

procedure

the

N

Amplitude

Press

UTO

A

in

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

ALIGN

analyzer

N

AUTO

N

NN

N

1

chapter

this

N

of

N

NN

N

NN

N

PRESET

N

NN

ALIGN

N

NN

N

,

3

.

factory

its

to

N

softkey

N

NN

N

service

corrects

to

N

NN

N

,

extnded

this

default

start

N

NN

condition

settings

an

NN

N

align

by

(Press

.

automatic

N

NN

N

,

ALIGN

NN

returning

the

alignment.)

N

NN

PRESET

N

ALIGNPRST

N

NN

N

.

AMP REF OFFSET

Softkey that adjusts the displayed amplitude level, using a relative-amplitude

oset value.

Osets

device

are

under

Although

typically

test

amplitude

all

used

rather

the

than

readouts

input

are

oset,

measurements

make

to

eected. The amplitude oset range is

the

of

detected

6

300 dBm.

relative

optical

to

spectrum

amplitudes

trace

analyzer.

are

not

of a

input

the

3-22

Dictionary Reference

Alphabetical Listing

CAUTION

Path

ey

K

Command

Using an amplitude reference oset can mask an overdriven input and cause

inaccurate measurements. The optical spectrum analyzer adjusts all internal

hardware based on the original reference level and does not incorporate the

oset value. Before using the amplitude reference oset function, be sure to

verify that the input signal is not excessive for the reference range setting

that is used during the measurement.

The optical spectrum analyzer adds osets to all amplitude readouts including

the marker, threshold, reference level, display-line, and calibration-power

readouts. Osets are stored and recalled with save and recall softkeys

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

SAVE STATE

The

keys

eliminate

o

zero

N

Amptd

.

during

keypad,

be

Use

.

,

N

NN

N

or

N

display

computer

numeric

value can

495

T

enter

Press

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

and

RECALL STATE.ROFFSET

also

oset

remote-control

and

changed

front-panel

the

oset,

an

4

press

N

,

MORE

N

NN

N

aects

any

terminate

increments

in

knob

activate

INSTR PRESET

N

NN

N

1

of

,

4

amplitude

T

one

of

change

N

REF

.

using

graticule

N

NN

N

OFFSET

N

operations

entry

the

to

amplitude-reference

the

.

5

N

NN

N

AMP

appears at the top of the

oset,

an

N

softkey

dB

division

value

returned

use

The

.

using

sequentially

the

information

enter

o

the

oset

the

oset function

N

.

to

the

a

oset

4

8

and

5

and

.

ROFFSET

AMPCOR ->LOWER

Softkey

this

Use

lower

the

copies

that

function

limit-line

amplitude-correction

to

return

table

previously

modication.

for

values

loaded

lower limit-line

a

into

amplitude-correction values

table

The amplitude corrections must rst be entered into the lower limit-line

table, using the limit-line softkey functions

amplitude-correction values

, using the

. The limit line is then stored

NNNNNNNNNNNNNNNNNNNNNNNNN

NNNNNNNNNN

LOWER-> AMPCOR

NNNNNNNNN

softkey.

.

to

as

3-23

Dictionary Reference

Alphabetical Listing

After the correction values are stored in the limit-line table, they can be

modied, using the appropriate limit-line softkey functions.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

Use the

LOWER-> AMPCOR

softkey to store and enable the

amplitude-correction values.

Key Path

See Also

Programming

NNNNNNNNNNNNNN

Press

Misc

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

AMPCOR ->LOWER

LOWER->AMPCOR,UPPER->AMPCOR

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 3

.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

limit lines

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

lim <-> ampcor

,and

AMPCOR On O

,

in this

chapter.

CORTOLIM

UPPER

AMPCOR-

Softkey

this

Use

upper

the

amplitude

The

using

,

table

amplitude-correction values, using the

>

copies

that

function

limit-line

the limit-line

amplitude-correction

return

to

table

corrections

previously

modication.

for

must

softkey functions

values

loaded

entered

be

rst

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

UPPER-> AMPCOR

upper

an

into

amplitude-correction

upper

the

into

line

limit

. The

softkey.

limit-line

then

is

values

limit-line

stored

After the correction values are stored in the limit-line table, they can be

modied, using the appropriate limit-line softkey functions.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

Use

the

UPPER->

AMPCOR

amplitude-correction

values.

softkey

store and

to

enable

the

table

to

as

.

Key Path

N

NNNNNNNNNNNNN

Press

Misc

NNNNNNNNNNNNNNNNNNNNNNNNN

N

NNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 3

NNNNNNNNNNNNNNNNNNNNNN

AMPCOR -> UPPER

3-24

.

NNNNNNNNNNNNNN

N

NNNNNNNNNNNNNNNNNNNN

,

limit lines

NNNNNNNNNNNNNN

N

NNNNNNNNNNNNNNNNNNNN

,

lim <-> ampcor

NNNNNNNNNNNNNNNNNNNNNNN

,

Dictionary Reference

Alphabetical Listing

See Also

Related Programming

Command

Path

ey

K

Also

See

UPPER->AMPCOR,LOWER->AMPCOR

chapter.

CORTOLIM

AMPCOR On O

Softkey

The

the

that

amplitude

limit-line

corrections

.

table

on

turns

amplitude-correction

N

Press

NN

N

AMPCOR

UPPER-

N

NN

Amptd

N

>

N

On

AMPCOR

N

,

MORE

N

Off

N

NN

N

.

When

values

N

1

and

and o

using

N

NN

N

of

LO

the use

must

using

,

N

,

4

WER-

N

of amplitude

rst be

the limit-line

the

N

NN

2

MORE

AMPCOR

>

,and

AMPCOR On O

entered via

table,

N

NN

N

UPPER->

N

of

,

4

N

NN

N

in

corrections.

acomputer

limit

N

NN

N

AMPCOR

N

NN

3

MORE

chapter.

this

N

of

lines

softkey

N

NN

N

,

4

in this

or by

stored

are

.

using

as

Related Programming

Command

AMPCOR

Amptd

Softkey

that

analyzer's

presents

sensitivity

a

and

menu

softkeys

of

amplitude

scale

that

.

control

the

optical

spectrum

3-25

Dictionary Reference

Alphabetical Listing

AMPTD VALUE

Softkey that enters the beginning amplitude value of the currently selected

limit-line segment.

Key Path

Also

See

Programming

N

NNNNNNNNNNNNN

Press

Misc

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 3

AMPTD VALUE

WVLEN

and

TYPE

LIMIAMP

ANALOG

rear-panel

A

output

An

voltage

a

output

of

equal

the

transimpedance

outer

its

with

.

VALUE

OUT

connector

transimpedance

photocurrent

the

to

The

.

value

conductor

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

limit lines

in this

.

connector

connected

chapter.

amplier

the

in

a

is

directly

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

LIMITS 1 of 3

output

This

.

multiplied

diode

the

SMB

rear

standard

to

directly

by the

coaxial

panel

,

provides

male

(earth

jack

ground).

ANAL

Softkey that initiates a self-test routine

YZR TEST

.

The routine determines if the optical spectrum analyzer is working properly

Any errors are reported automatically on the display screen.

3-26

.

Dictionary Reference

Alphabetical Listing

Key Path

Related Programming

Command

Path

ey

K

Press

NNNNNNNNNNNNNN

Misc

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 3

TEST

ANOTATN On O

displayed

the

turns

Softkey

All

settings

The

Refer

User's

Press

that

annotation

blanked.

are

can

clock

the

to

Guide

N

NN

N

,

Misc

showing

The

blanked

be

\Controlling

information

for

N

NN

N

ANOTATN

NNNNNNNNNNNNNNNNNNNNNNN

,

service

amplitude

clock

using

Annotation,

on

N

NN

N

Off

On

annotation

values

remains

softkeys

Printing,

blanking

N

.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

ANALYZR TEST

o.

and

on

wavelength

,

and

clock.

at

with

Plotting"

displayed

accessed

the

.

values

the top

the

, and

of the

4

DISPLA

chapter

instrument

screen.

.

key

5

Y

the

in

Key

Path

ANY

CHR

Softkey that enters any ASCII character as part of a programming command.

Remote programming commands can be entered from the front panel using

the

NNNNNNNNNNNNN

N

Misc

menu's COMMAND selection. The

NNNNNNNNNNNNNNNNNNNNNN

N

ANY CHR

softkey provides

the ability to enter characters not normally available for selection. Enter a

character

N

Press

Misc

N

NN

N

3

decimal

N

,

COMMAND

3-digit

N

NN

N

MORE 1

N

its

N

NN

N

of

typing

by

N

NN

N

,

ASCII

NN

N

NN

N

,

ANY CHR

NN

N

NN

N

.

code

3-27

Dictionary Reference

Alphabetical Listing

See Also

Path

ey

K

Also

See

Programming

COMMAND

in this chapter.

AT MKR On O

Softkey that allows the automatic measurement routine to execute on a

unique signal in a multiple signal environment.

NNNNNNNNNNNNNNNNNNNN

N

On

N

MKR

this

N

the

N

Off

in

N

NN

N

On

4

UTO

A

tunes

routine

the

N

is

automatic

current

the

N

Off

chapter

MEASURE

optical

the

looks

pressed

measurement

trace

N

.

5

so

or

for

that

.

the

Waveln

spectrum

the

N

On

routine

largest

N

automatic

The

menu's

N

AUTO

analyzer to

the

in

signal

underlined,

the

for

looks

N

Press

State

MEASURE

UTO

A

UTOMMKR

A

measurement

N

NN

N

MEASURE

a signal.

current

and

signal

N

,

autmeas

N

marker

a

closest

N

and

N

NN

N

softkey)

identify

To

trace

N

NN

N

autmeas

routine

If

.

turned

is

to

N

state

(press

automatically

signal,

the

NN

N

MKR

AT

on,

marker

the

N

,

AT

state

N

in

is

autmeas state

Softkey

that

measurement

presents

routine

a

.

menu

which

allows

you

modify the

to

automatic

The automatic measurement routine automatically tunes the optical spectrum

analyzer for optimum display of an input

span is calculated to display most of the signal's

routine

N

, press the

NNNNNNNNNNNNNNNNNNNNNNNNN

NNNNN

AUTO MEASURE

NNNNNNNNNNNNNNNN

N

Waveln

NNNNNNN

locates a signal according to the following steps:

NNN

menu's

signal. The resulting wavelength

energy.(To start the

NNNNNNNNNNNNNNNN

N

AUTO

NNNNNNNNNNNNNNNNNNNNN

MEASURE

softkey.) Normally

,

3-28

Dictionary Reference

Alphabetical Listing

1. Locates largest signal in the full wavelength span.

2. Centers signal on the display by adjusting center wavelength, sensitivity,

and reference level.

3. Reduces the wavelength span so that most (or all) of the signal power is

displayed.

4. Sets the amplitude scale to 10 dB/division.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

Three

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

SPAN AutoMan

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

OPTSENS, On Off

The

of

is

optimum

the

The

completion

so

underlined,

the

When

uses the closest peak to the marker. Of course, a marker must be on. An

instrument preset sets the softkey to

When the

measurement routine uses a lower sensitivity setting in order to reduce

the

viewing

measurement.

autmeas state

N

NN

N

AutoMan

SPAN

the automatic

underlined,

spanwidth

softkey

N

DB/DIV

that

softkey

displayed

to

NN

N

the

AutoMan

of

N

NN

N

is

Man

the

to

N

NN

N

AT

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

OPTSENS On Off

sidemodes

of

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

DB/DIV AutoMan

N

measurement

and

N

Auto

N

the

underlined,

default

N

Auto

N

MKR On

noise

menu softkeys alter the above steps:

.

N

softkey

the

enter

automatically

is

N

.

N

softkey

automatic

dB-per-division

10

N

.

N

NN

N

Off

example

One

.

a

on

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

AT MKR On Off

wavelength

the

sets

Press

calculated.

changes

enter

is on,

NNNNNNNNNNN

using

of

upon

laser

.

the

Off

routine

desired span.

measurement

and

N

softkey

softkey is turned on, the automatic

DFB

N

SPAN

When

nal

routine.

desired

used.

is

the automatic

.

this feature

the completion

,and

used

span

NN

N

AutoMan

N

NN

N

Auto

instrument

An

amplitude

Press

.

scale

instrument

An

is

N

NN

is

N

When

measurement

N

underlined,

N

NN

DB/DIV

to

of

scale

N

allow

the

that

so

preset

used

N

NN

N

Auto

automatic

N

preset

the

completion

upon

N

Man

the

sets

upon

N

NN

N

AutoMan

N

is

sets

routine

N

Key Path

Press

NNNNNNNNNNNNNNNNN

State

NNNNNNNNNNNNNNNNNNNNNNNN

,

autmeas state

NNNNNNNNNNNNNNNNN

.

3-29

Dictionary Reference

Alphabetical Listing

Auto

Softkey that determines the values measured by the marker.

Normally, the optical spectrum analyzer selects the proper marker readout

based on the current instrument state, when the

NNNNNNNNNNNNNN

Auto

softkey is underlined.

The marker annotation can be manually selected to indicate one of the

following trace values:



Frequency

avelength

W



Period



Sweeptime



1



T

N

the

NN

N

readout

N

pressing

N

,

5

N

MORE

automatic

N

NN

N

UTO

A

to normal

N

NN

N

Auto

NN

N

Marker

ALIGN

N

underlined

N

Return

has

Path

ey

K

Press

4

N

or

N

1

N

by

N

of

N

marker

pressing

N

NN

N

4

N

,

annotation

4

INSTR

N

NN

N

MORE

N

2

N

of

N

by

PRESET

N

NN

N

,

4

.

5

N

NN

N

marker

N

Auto

N

softkey

N

,

NN

N

Auto

N

.

This custom keypad feature initiates an automatic alignment routine.

The alignment positions the optical spectrum analyzer's internal optics for

optimum signal gain. This feature is identical to pressing the

softkey

NN

N

AUTO

under

NN

N

NN

N

ALIGN

the

N

performs

NNNNNNNNNNNNNNNNN

Amptd

menu

alignment

the

softkey

no

If

.

using the

marker

largest

is

present,

signal

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

AUTO ALIGN

span.

full

in

a marker is on, it uses the signal found at that wavelength.

3-30

If

Dictionary Reference

Alphabetical Listing

Related Programming

Command

Path

ey

K

Command

AUTOALIGN

AUTO ALIGN

Softkey that initiates an automatic alignment routine. The alignment positions

the optical spectrum analyzer's internal optics for optimum signal gain

and amplitude accuracy. Pressing this softkey is identical to pressing the

present,

4

UTO

A

N

NN

N

AUTO

marker

a

Press

UTO

A

ALIGN

N

Amptd

ALIGN

NN

N

ALIGN

is

N

key

5

N

NN

performs

on,

N

,

AUTO

located

uses

it

N

on

the alignment

signal

the

N

NN

N

ALIGN

the

.

custom

found

keypad.

using the

that

at

marker

no

If

largest signal

wavelength.

is

in

full

span.

If

4

AUTO

MEASURE

5

Initiates an automatic measurement routine.

The measurement locates the largest signal present at the input connector

and tunes the optical spectrum analyzer to the signal. This is accomplished

by centering the signal on the display and then narrowing the span to

the

used

the

With

by

N

NN

AUTO

N

the routine

N

NN

N

NN

N

MEASURE

N

either

N

NN

N

autmeas

locate

to

N

NN

N

state

signal.

a

N

NN

N

or

50,

100,

softkey under the

nm

20

N

menu,

This feature

NNNNNNNNNNNN

NNNNNNNN

Waveln

determined

as

modify

can

you

identical

is

menu softkey

by the

the

to

.

signal

algorithm

pressing

width.

This automatic measurement routine is normally the best way to adjust

sensitivity while maintaining the fastest

sweep rates.

3-31

N

Dictionary Reference

Alphabetical Listing

See Also

Related Programming

Command

Path

ey

K

autmeas state

in this chapter.

AUTOMEAS

AUTO MEASURE

Softkey that initiates an automatic measurement routine.

measurement

The

tunes

and

centering

by

100,

either

N

NN

autmeas

MEASURE

UTO

automatic

to

routine

4

A

This

sensitivity

NN

N

Press

Waveln

the

50,

N

state

locate

while

N

NN

N

the

NN

N

locates

optical

N

spectrum analyzer

on

signal

nm

20

or

N

menu,

signal.

a

located

key

5

measurement

maintaining

N

,

N

AUTO

NN

N

MEASURE

N

largest signal

the

display and

the

as determined

modify

can

you

Pressing

on

this

the

routine

fastest

the

N

NN

N

.

to the

by the

softkey

custom

normally

is

sweep

present at

signal. This

then narrowing

signal

algorithm

the

is

keypad.

rates

the input

width.

identical

best

the

.

is accomplished

span

the

With

the

by

used

pressing

to

way

connector

to

the

adjust

Programming

UTOMEAS

A

AUTO

Softkey that

SCALE

automatically

scales

the

dependent loss (PDL) measurement.

3-32

displayed

signal

during

polarization

a

NOTE

For use with Option 003, Swept Polarization Dependent Loss (PDL) Kit.

Dictionary Reference

Alphabetical Listing

Path

ey

K

Programming

Prior to initializing the PDL measurement,

AUTO SCALE

positions the peak

of trace A to the reference level and selects the scaling (that is, dB/division)

based upon the minimum signal level of trace A.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

When

is

upon

When

of

the

,

trace

INIT

maximum

the

NN

N

CALC

A

N

NN

N

dB/division

4

Press

USER

NN

N

PDL

minimum

N

NN

DISPLAY

+

result

a

as

which

NN

N

,

5

PDL

pressed,

is

signal)

point

N

NN

N

keeps

N

,

AUTO

N

of

N

NN

to

N

trace

the

N

in

N

NN

N

AUTO

the

trace

selected,

is

B

maximum

N

SCALE

N

NN

reference

C

minus

N

.

NN

N

SCALE

(that

NN

N

AUTO

trace

signal

N

NN

positions

level

the

,

is

N

SCALE

C

and

minimum

NN

N

selecting

by

below

the peak

selects

positions

top

the

of trace

scaling based

the

signal).

peak

the

minimum

the

graticule

B (that

.

PDLSCALE

AUTOPTS ALIGN

Softkey that runs an automatic alignment routine for the ber positioner's

tracking

table.

This

softkey

runs

alignment

the

over

align the 900 nm to 1700 nm range

user-specied

a

wavelength

, refer to W LIGHT ALIGN in

range.

this chapter

You must enter the stop and start wavelengths before pressing this softkey

These wavelengths are included in the alignment. The alignment requires

a white light source and takes about 2 or 3 minutes to complete

. Before

o

T

.

3-33

.

Dictionary Reference

Alphabetical Listing

initiating the alignment, you must connect a white-light source to the

front-panel input connector.

To run this alignment, you must observe the following requirements:



Set the start and stop wavelengths within the input range of 600 nm to

1700 nm.



Ensure that the span of the alignment is greater than 10 nm.

If the above conditions are not met, a \Bad Wavelength Range" error message

is displayed.

The alignment occurs at equally spaced points between the start and stop

nm.

50

than

more

N

NN

ALIGN

N

NN

N

shifted

N

ALIGN

.

N

wavelengths

alignment replaces

The

NN

N

AUTO

pressing

by:

NN

N

then

EXTEND

N

an

If

AUTO

is

data

No

N

data

N

State

NN

N

STATE

N

by

points

is

N

NN

N

AUTO

current

zeroed.

N

,

MORE

N

.

executed

is

NN

N

separated

are

N

1

N

ALIGN

correction

The

N

NN

N

of

after

N

.

resulting

N

,

3

this

by

data

correction

N

MORE

alignment,

the

and

data,

new

with

viewed

be

may

data

N

NN

N

of

2

3

,

the

N

show

N

states

N

NN

N

AUTOPTS

NN

N

NN

N

ALIGN

N

and

,

N

NN

N

Path

ey

K

Also

See

Related Programming

Command

N

Press

Misc

ALIGN

this chapter

ALIGN

AUTORNG

Softkey that turns automatic ranging on or o. Normally

spectrum analyzer automatically selects the greatest sensitivity possible that

does not require amplication changes during the sweep

increase the sensitivity level, the sweep pauses to allow this change in

3-34

N

NN

N

,

PRESET

.

N

MORE

,

On

NN

A

N

1

UTO

N

of

O

NN

N

,

3

ALIGN

N

NN

N

service

MANU

,

N

AL

N

,

extnded

ALIGN

NN

N

,

and

align

N

,

AUTOPTS

LIGHT ALIGN

W

, the optical

. If you manually

N

NN

N

ALIGN

NN

N

in

N

NN

N

.

Dictionary Reference

Alphabetical Listing

Key Path

Related Programming

Command

Path

Key

gain. This is known as autoranging. If desired, autoranging can be disabled

using the

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

AUTORNG On Off

softkey. This softkey also indicates the state

of autoranging for a given sensitivity and video bandwidth setting. If

autoranging is on, an asterisk appears next to the

Press

N

NNNNNNNNNNNNNNNN

Amptd

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

AUTORNG On Off

SENS

.

screen annotation.

AUTORNG

O

turns

process

a

spectrum

also

but

N

,

MORE 1

On

o

that

analyzer

ampliers

increases

N

zeroing

compensates

.

between

sweep

N

NN

N

of

,

4

between

optical

The

each

retrace

N

MORE 2

traces.

temperature-related

for

spectrum

Zeroing

.

sweep

.

time

N

NN

N

of

N

,

4

AUTZERO On

analyzer zeroes

increases

N

NN

N

current drift

its

amplitude

N

.

Off

active

AUTZERO

Softkey

Zeroing

the

that

is

optical

transimpedance

accuracy

N

Press

Amptd

in

See Also

Related Programming

Command

ZERO

this chapter

in

.

AUTZERO

B-DL



B

Softkey that subtracts the value of the display line

the result

in trace B

.

from trace B

, then stores

3-35

Dictionary Reference

Alphabetical Listing

To observe the result of this trace math, be sure to place the optical

spectrum analyzer in single sweep mode. Use this feature to position the

trace on the screen. To turn on and position the display line, press

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

DSP LIN On Off

, and use the front-panel knob to position the line.

NNNNNNNNNNNNNN

Misc

,

Key Path

See Also

Related Programming

Command

Path

ey

K

Programming

NNNNNNNNNNNNNNNNNNNN

Press

Traces

DSP LIN On O

BML

XCH

B

Softkey

Press

C

that

N

NN

N

Traces

exchanges

N

BXC

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

in this chapter.

the

N

,

N

MORE

N

NN

N

of

1

contents

N

4

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

oneshot math

the

of

N

,

oneshot

N

NN

N

trace

N

math

N

NN

N

NNNNNNNNNNNNNNNNNNNNNNN

,

B-DL->B

and

B

N

NN

N

,

XCH

B

trace

N

C

.

N

.

registers

C

.

BEEPER On O

Softkey

crossed

When

on

turns

that

displayed

a

NNNNNNNNNNN

NNNNNNNNNNNNNNNNNNNNNNNNN

limit

BEEPER On Off

and

NNNNN

is set to

o an

line

alerting

for

alarm

.

NNNNNNNN

On

, the analyzer beeps when the trace data

you

a

that

exceeds the upper or lower limits dened in the limit-line table

displayed at the top of the display

PASS

is displayed.

. If the trace data passes the test limits

3-36

signal

.

FAIL

has

is also

,

Dictionary Reference

Alphabetical Listing

Key Path

See Also

Related Programming

Command

NNNNNNNNNNNNNN

Press

Misc

,

LIMITS On O

LIMIBEEP,BP

BLANK A

Softkey that

softkey

This

N

CLEAR

toggles

or blank

locations

blanked

reserved

N

NN

N

WRT

between

stored

(Use

.

traces

memory

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

MORE 1 of 3

in this chapter.

prevents trace

displayed

is

N

A

or

N

VIEW

trace

the

are

4

NN

after

PRESET

INSTR

N

A

data.

N

trace

removed from

.

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

limit lines

A data

N

STORE

is

5

N

NN

N

and

BLANK

data

The

N

NN

A

B

softkey

C

the

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

BEEPER On Off

displayed.

being

from

N

NN

N

pressed. When

N

is

A

N

.

A

stored

is

display

pressed

This

select

to

the

,

gives

in

disappears

and

pressed,

the

you

temporary

trace

data

trace

.

the

ability

trace

memory

still

when

softkey

to view

memory

While

.)

remains

in

Path

ey

K

See Also

Related Programming

Command

NN

N

Press

Traces

CLEAR WRT A

N

,

BLANK

in this chapter.

N

NN

N

.

A

BLANK

BLANK B

Softkey that prevents trace B data from being displayed.

3-37

Dictionary Reference

Alphabetical Listing

Key Path

Also

See

Programming

This softkey is displayed after

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

CLEAR WRT Bor4

toggles between

or blank stored trace data. The data is stored in temporary trace memory

locations.(Usethe

INSTR PRESET

NNNNNNNNNNNNNNNNNNNN

VIEW B

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

trace A B C

and

STORE B

5

is pressed. When pressed, the softkey

NNNNNNNNNNNNNNNNNNNNNNN

BLANK B

is pressed and disappears when

. This gives you the ability to view

softkey to select trace memory.) While

blanked traces are removed from the display, the trace data still remains in

reserved memory.

NNNNNNNNNNNNNNNNNNNNNNN

Press

CLEAR

NNNNNNNNNNNNNNNNNNNN

Traces

WRT

NNNNNNNNNNNNNNNNNNNNNNN

,

BLANK B

this

in

A

.

chapter

.

BLANK

NN

N

C

that

N

NN

WRT C

prevents

displayed

is

N

4

or

INSTR

N

NN

N

VIEW C

data

C

trace

N

after

STORE

and

5

N

NN

N

BLANK C

PRESET

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

trace A B C

displayed.

being

from

N

NN

N

C

is pressed.

N

pressed

is

When

disappears

and

pressed,

the

softkey

. This gives you the ability to view

softkey to select trace memory.) While

when

BLANK

Softkey

softkey

This

N

CLEAR

toggles between

or blank stored trace data. The data is stored in temporary trace memory

locations.(Usethe

blanked traces are removed from the display, the trace data still remains in

reserved memory.

Path

ey

K

See Also

N

NN

N

Press

Traces

CLEAR WRT C

3-38

NN

N

,

NN

N

BLANK

in

N

NN

N

.

C

this chapter

.

Dictionary Reference

Alphabetical Listing

Related Programming

Command

Path

Key

Command

BLANK

BLANK TRACES

Softkey that prevents the display of trace A, B, and C during creation or

editing of limit lines.

Blanking the traces can make it easier to view the limit lines you are creating

editing.

or

Press

N

NN

N

LIMITS

N

Misc

N

2

N

of

N

,

MORE 1

N

NN

N

3

N

,

NN

N

BLANK

NN

of

NN

N

NN

N

,

3

N

TRACES

N

limit lines

NN

N

NN

N

.

N

,

LIMITS 1

N

of

,

3

N

NN

N

BLANK

Swp

,

BW

Softkey that

presents

a

menu

controlling

for

instrument

and triggering.

B



C

Softkey that places the contents of trace B into trace C.

sweep

bandwidth,

,

3-39

Dictionary Reference

Alphabetical Listing

Key Path

Press

NNNNNNNNNNNNNNNNNNNN

Traces

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

oneshot math

NNNNNNNNNNNNNNNNNNN

,

C

B.

cal menu

Softkey that presents a menu for performing user calibration at a set

wavelength and power level.

This user calibration calibrates the optical spectrum analyzer at a specic

source

stable

must

the

you

a

have

running

desire

known

a

these

of

maximum

wavelength

within

the

wavelength

calibration

This

optical

our

Y

calibrations.

user

performance

and

to

600

and

is

spectrum

These

specic

a

at

power

1700

power

required

not

analyzer

calibrations

wavelength

level.

nm

.

meets all

It

range

are

or power

requires

The

.

published

its

provided for

level.

you

that

calibration

specications

situations

those

rst

source

without

where

display

wavelengths

all

wavelength calibration

The

applied

simple

a

not

is

oset

to

but uses the trigonometric diraction grating equation to correct all

wavelengths in a calculated manner. The power oset is a simple oset

applied equally to all wavelengths. It is good measurement practice to

calibrate the optical spectrum analyzer as close as possible to the wavelength

where

The

2

you plan

optical spectrum

in wavelength.

nm

Cal signal

make

to

analyzer's

If

is displayed.

your

a

larger

measurements

maximum

adjustment

.

calibration

attempted,

is

adjustment

error

is

2023

about

Illegal

During a power calibration, the light source's output power is rst measured

with a power meter

power meter and connected to the optical spectrum analyzer

. Then, the ber-optic cable is disconnected from the

. Because

the optical spectrum analyzer is slightly polarization sensitive, power

3-40

Dictionary Reference

Alphabetical Listing

calibrations should be performed by persons knowledgeable of the eects

of polarization on optical power measurements. Moving ber-optic cables

changes polarization, the output power may vary.To ensure the output

power does not vary, use a polarization controller. Use the polarization

controller to maintain the same polarization between the measurement of

the light source's power and the optical spectrum analyzer's calibration.

Calibrate for the average output power value.

At any time, you can turn o the use of either wavelength or power

calibration data. You can also reenter or erase the calibration from memory.

Separate power calibration data is obtained from calibrations performed

during optical spectrum analyzer and power-meter instrument modes.For

to

refer

information

more

\Calibrating

71450B/1B/2B

calibrating

on

the

Optical

Spectrum

Optical Spectrum

optical

the

Analyzer"

Analyzers

spectrum

located

User's

Guide

analyzer

in

,

Chapter

.

HP

the

of

1

Key Path

Locating

a

During

factory

The

ower

P

avelength

W

signal

the

If

N

NN

N

WAVELEN

wavelength

calibration

the

calibration,

default

:

not

is

N

FOR

the

of

:

N

signal

the optical

and calibration

:

::

:

::

:

within these

N

NN

source

CAL

to

must

spectrum

:

::

limits, use

enter

also

oset

:

the

be

:

analyzer

limits

:

N

wavelength.

entered.

are:

:

N

NN

POWER

If

expects

:

N

FOR

If

you

a

:

::

:

NN

N

you

calibrate

to

signal

:

::

:

N

to

CAL

calibrate only

only

its

near

be

5

0

:

1300

:

the power

enter

power,

wavelength,

5

6

dBm

nm

2

6

and

the approximate

approximate

the

power of the source must also be entered. Of course, if you are calibrating both wavelength and

power, you will enter exact values. You can use markers to obtain a approximate wavelength and

power values.

Press

NNNNNNNNNN

NNNNNNNNNNNNN

Wavelen

NNNNNNNNNNNNNN

NNN

Amptd

NNNNNNNNNNNNNNNNNNNNNN

NNNNNNNNNNNNN

,

MORE 1 of 2

NNNNNNNNNNNNNNNNNNNNNNNNN

NNN

,

MORE 1 of 4

NNNNNNN

,

NNNNNNNNNNNNNNNNNNNNNNN

NNN

cal menu

NNNNNNNNNNNNN

cal menu

.

calibration.

3-41

Dictionary Reference

Alphabetical Listing

CAL POWER

Softkey that performs a power calibration at a set wavelength.

Key Path

To ensure an accurate power calibration, do an

4

AUTO ALIGN

5

before

performing this calibration routine.To remind you of this, the following

message is displayed whenever this softkey is pressed: \

degrade performance

." Use the

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

N

POWER FOR CAL

Improper cal may

softkey to enter the exact

power of the source.

Chapter

.

expect

N

enter

to

.

performed

modes.

to

refer

the

of

1

nm

1300

a

correct

the

signal.

Separate

during

more

power

optical spectrum

information on

\Calibrating

7145B/1B/2B

Locating

During

the

(Use

the

power

a

calibration

markers

NNNNNNNNNNNNNNNNNNNNNNN

Press

Wavelen

NNNNNNNNNNNNNNNNN

Press

Amptd

calibration

calibrating the

Optical

the

Optical

calibration

calibration,

signal

obtain a

to

Spectrum

signal

the

1300

not

is

wavelength value

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 2

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

obtained

is

data

analyzer and

power-meter instrument

optical spectrum

Spectrum Analyzer"

User's

analyzer

N

NN

N

WAVELEN

optical

6

Analyzers

spectrum

nm,

2

use

.)

NNNNNNNNNNNNNNNNNNNNNNNNNN

,

cal menu

NNNNNNNNNNNNNNNNNNNNNNNNNN

,

cal menu

,

calibrations

from

located in

Guide

defaults

factory

N

FOR

N

NN

N

CAL

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

CAL POWER

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

CAL POWER

analyzer,

N

F

or

HP

value

If

.

See

Also

cal

3-42

menu

in

this

chapter

.

Dictionary Reference

Alphabetical Listing

cal setup

Softkey that presents a menu for specifying the power and wavelength used

for user calibrations.

Key Path

NNNNNNNNNNNNNNNNNNNNNNN

Press

Wavelen

NNNNNNNNNNNNNNNNN

Press

Amptd

ensure

o

WA

that performs

.

CAL

Softkey

amplitude

T

performing

message

degrade

exact

or

F

is

performance

wavelength

information

more

\Calibrating

an

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 2

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

VELEN

accurate

calibration

this

displayed

."

the

of

Optical

the

,

wavelength

a

wavelength

routine

whenever

Use the

source

calibrating

on

Spectrum

NNNNNNNNNNNNNNNNNNNNNNNNNN

,

cal menu

NNNNNNNNNNNNNNNNNNNNNNNNNN

cal menu

calibration

calibration,

remind

o

T

.

softkey

this

NN

N

WAVELEN

.

the

Analyzer"

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

cal setup

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

cal setup

at

do

you

pressed:

is

N

NN

N

optical

FOR

CAL

spectrum

located

a

an

N

set

4

A

of this

N

softkey to

in

71450B/1B/2B Optical Spectrum Analyzers User's Guide

.

wavelength

UTO ALIGN

following

the

,

Improper cal

\

enter the

analyzer

Chapter

.

before

5

,

of

1

and

refer

the

may

to

HP

Locating the calibration signal

wavelength

a

During

6

5

dBm

5

0

N

NN

N

NN

POWER FOR CAL

calibration,

power

the

If

.

dB

N

NN

N

softkey prior to the wavelength calibration. (Use markers to obtain the power

level.)

at

signal

defaults expect

this

limit,

analyzer

enter

the approximate

spectrum

optical

the

within

not

is

a

power

using

the

3-43

Dictionary Reference

Alphabetical Listing

Key Path

See Also

Path

ey

K

Also

See

NNNNNNNNNNNNNNNNNNNNNNN

Press

Wavelen

NNNNNNNNNNNNNNNNN

Press

Amptd

cal menu

CAL WVL ATPIT

Softkey

After

the

Press

CAL

in this chapter.

that

pressing

wavelength.

pit

N

NN

N

Wavelen

N

Amptd

VELEN

A

W

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 2

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

MORE 1 of 4

performs

softkey

this

N

,

N

MORE

in

N

NN

N

MORE

N

this

wavelength

a

N

1

N

NN

N

of

1

chapter

use

,

N

of

N

4

NNNNNNNNNNNNNNNNNNNNNNNNNN

,

cal menu

NNNNNNNNNNNNNNNNNNNNNNNNNN

,

cal menu

marker

the

N

NN

N

NN

N

,

2

cal

N

,

N

cal

.

N

menu

,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

,

CAL WAVELEN

calibration

keys

N

menu

N

NN

N

,

N

,

CAL

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

CAL WAVELEN

signal

a

at

numeric

(or

N

CAL

N

NN

N

WVL

N

NN

N

WVL

N

AT

N

AT

N

PIT

.

pit.

keypad)

N

NN

N

PIT

N

enter

to

N

.

Programming

CAL

CALC + DISPLAY

calculates

Softkey

displays

stopped and the

(maximum) minus trace C

3-44

that

the

result.

the peak-to-peak

After the

result is displayed as trace A. Trace A is the result of trace B

calculation

(minimum).

polarization

performed,

is

dependent

measurement

the

loss

and

is

Agilent 71450B Reference Guide

Specifications and Main Features

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User Manual

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