Agilent Technologies 86140B User manual

Agilent 86140B Series

Optical Spectrum Analyzer

User’s Guide

ii

Agilent Technologies 2001

duction, adaptation, or trans-

lation without prior written

permission is prohibited,

except as allowed under copy-

right laws.

Agilent Part No. 86140-90068

Printed in USA

January 2002

Agilent Technologies

Lightwave Division

3910 Brickway Boulevard,

Santa Rosa, CA 95403, USA

Notice.

The information contained in

this document is subject to

change without notice. Com-

panies, names, and data used

in examples herein are ficti-

tious unless otherwise noted.

Agilent Technologies makes

no warranty of any kind with

regard to this material, includ-

ing but not limited to, the

implied warranties of mer-

chantability and fitness for a

particular purpose. Agilent

Technologies shall not be lia-

ble for errors contained herein

or for incidental or conse-

quential damages in connec-

tion with the furnishing,

performance, or use of this

material.

Restricted Rights Legend.

Use, duplication, or disclo-

sure by the U.S. Government

is subject to restrictions as set

forth in subparagraph (c) (1)

(ii) of the Rights in Technical

Data and Computer Software

clause at DFARS 252.227-7013

for DOD agencies, and sub-

paragraphs (c) (1) and (c) (2)

of the Commercial Computer

Software Restricted Rights

clause at FAR 52.227-19 for

other agencies.

Warranty.

This Agilent Technologies

instrument product is war-

ranted against defects in

material and workmanship for

a period of one year from date

of shipment. During the war-

ranty period, Agilent Technol-

ogies 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 desig-

nated by Agilent Technolo-

gies. Buyer shall prepay

shipping charges to Agilent

Technologies and Agilent

Technologies shall pay ship-

ping charges to return the

product to Buyer. However,

Buyer shall pay all shipping

charges, duties, and taxes for

products returned to Agilent

Technologies from another

country.

Agilent Technologies war-

rants that its software and

firmware designated by Agi-

lent Technologies for use with

an instrument will execute its

programming instructions

when properly installed on

that instrument. Agilent Tech-

nologies does not warrant that

the operation of the instru-

ment, or software, or firmware

will be uninterrupted or error-

free.

Limitation of Warranty.

The foregoing warranty shall

not apply to defects resulting

from improper or inadequate

maintenance by Buyer, Buyer-

supplied software or interfac-

ing, unauthorized modifica-

tion or misuse, operation

outside of the environmental

specifications for the product,

or improper site preparation

or maintenance.

No other warranty is

expressed or implied. Agilent

Technologies specifically dis-

claims the implied warranties

of merchantability and fitness

for a particular purpose.

Exclusive Remedies.

The remedies provided herein

are buyer's sole and exclusive

remedies. Agilent Technolo-

gies shall not be liable for any

direct, indirect, special, inci-

dental, or consequential dam-

ages, whether based on

contract, tort, or any other

legal theory.

Safety Symbols.

CAUTION

The caution sign denotes a

hazard. It calls attention to a

procedure which, if not cor-

rectly performed or adhered

to, could result in damage to

or destruction of the product.

Do not proceed beyond a cau-

tion sign until the indicated

conditions are fully under-

stood and met.

WARNING

The warning sign denotes a

hazard. It calls attention to a

procedure which, if not cor-

rectly performed or adhered

to, could result in injury or

loss of life. Do not proceed

beyond a warning sign until

the indicated conditions are

fully understood and met.

The instruction man-

ual symbol. The prod-

uct is marked with this

warning symbol when

it is necessary for the

user to refer to the

instructions in the

manual.

The laser radiation

symbol. This warning

symbol is marked on

products which have a

laser output.

The AC symbol is used

to indicate the

required nature of the

line module input

power.

| The ON symbols are

used to mark the posi-

tions of the instrument

power line switch.

The OFF symbols

are used to mark the

positions of the instru-

ment power line

switch.

The CE mark is a reg-

istered trademark of

the European Commu-

nity.

The CSA mark is a reg-

istered trademark of

the Canadian Stan-

dards Association.

The C-Tick mark is a

registered trademark

of the Australian Spec-

trum Management

Agency.

This text denotes the

instrument is an

Industrial Scientific

and Medical Group 1

Class A product.

Typographical Conven-

tions.

The following conventions are

used in this book:

Key type for keys or text

located on the keyboard or

instrument.

Softkey type for key names that

are displayed on the instru-

ment’s screen.

Display type for words or

characters displayed on the

computer’s screen or instru-

ment’s display.

User type for words or charac-

ters that you type or enter.

Emphasis type for words or

characters that emphasize

some point or that are used as

place holders for text that you

type.

ISM1-A

iii

General Safety Considerations

This product has been designed and tested in accordance with the standards

listed on the Manufacturer’s Declaration of Conformity, and has been supplied

in a safe condition. The documentation contains information and warnings

that must be followed by the user to ensure safe operation and to maintain the

product in a safe condition.

Install the instrument according to the enclosure protection provided.

This instrument does not protect against the ingress of water.

This instrument protects against finger access to hazardous parts within the

enclosure.

WARNING If this product is not used as specified, the protection provided by the

equipment could be impaired. This product must be used in a normal

condition (in which all means for protection are intact) only.

WARNING No operator serviceable parts inside. Refer servicing to qualified

service personnel. To prevent electrical shock do not remove covers.

WARNING This is a Safety Class 1 Product (provided with a protective earthing

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

inserted in a socket outlet provided with a protective earth contact.

Any interruption of the protective conductor inside or outside of the

instrument is likely to make the instrument dangerous. Intentional

interruption is prohibited.

WARNING To prevent electrical shock, disconnect the instrument from mains

before cleaning. Use a dry cloth or one slightly dampened with water

to clean the external case parts. Do not attempt to clean internally.

CAUTION Fiber-optic connectors are easily damaged when connected to dirty or

damaged cables and accessories. The Agilent 86140B series’s front-panel INPUT

connector is no exception. When you use improper cleaning and handling

techniques, you risk expensive instrument repairs, damaged cables, and

compromised measurements. Before you connect any fiber-optic cable to the

Agilent 86140B series, refer to “Cleaning Connections for Accurate

Measurements” on page 6-8.

iv

General Safety Considerations

CAUTION This product is designed for use in Installation Category II and Pollution

Degree 2 per IEC 61010-1C and 664 respectively.

CAUTION Do not use too much liquid in cleaning the optical spectrum analyzer. Water can

enter the front-panel keyboard, damaging sensitive electronic components.

CAUTION VENTILATION REQUIREMENTS: When installing the product in a cabinet, the

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

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

temperature of the product by 4

° C for every 100 watts dissipated in the

cabinet. If the total power dissipated in the cabinet is greater than 800 watts,

then forced convection must be used.

CAUTION Install the instrument so that the detachable power cord is readily identifiable

and is easily reached by the operator. The detachable power cord is the

instrument disconnecting device. It disconnects the mains circuit from the

mains supply before other parts of the instrument. The front panel switch is

only a standby switch and is not a LINE switch. Alternatively, an externally

installed switch or circuit breaker (which is readily identifiable and is easily

reached by the operator) may be used as a disconnecting device.

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

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

instrument damage.

CAUTION Do not connect ac power until you have verified the line voltage is correct as

described in “Line Power Requirements” on page 1-11. Damage to the

equipment could result.

CAUTION This instrument has autoranging line voltage input. Be sure the supply voltage

is within the specified range.

CAUTION The Agilent 86140B, 86141B, 86144B, 86146B and 86142B Option 004/005/006

EELED sources contain an IEC Class 1 LED, according to IEC 60825.

CAUTION Use of controls or adjustment or performance of procedures other than those

specified herein may result in hazardous radiation exposure.

Contents

Contents-1

1 Getting Started

Product Overview 1-2

Setting Up the Analyzer 1-8

Making a Measurement 1-13

The Menu Bar 1-17

The Softkey Panels 1-18

Laser Safety Considerations 1-29

Product Options and Accessories 1-30

2 Using the Instrument

Setting Up Measurements 2-2

Calibrating Wavelength Measurements 2-14

Saving, Recalling, and Managing Files 2-19

Analyzing Measurement Data 2-27

Analyzer Operating Modes 2-30

3 Function Reference

4 Remote Front Panel Operation

Remote Front Panel 4-2

5 Status Listings

Overview 5-2

Error Reporting Behavior 5-4

SCPI-Defined Errors 5-5

OSA Notices 5-16

OSA Warnings 5-17

Application-Specific Warnings 5-29

OSA Status Errors 5-35

OSA Errors 5-36

Firmware Errors 5-38

6 Maintenance

Changing the Printer Paper 6-2

Printer Head Cleaning Procedure 6-4

Cleaning Connections for Accurate Measurements 6-8

Returning the Instrument for Service 6-21

Contents-2

Contents

7 Specifications and Regulatory Information

Definition of Terms 7-3

Specifications 7-5

Regulatory Information 7-21

Declaration of Conformity 7-22

1

Product Overview 1-2

Setting Up the Analyzer 1-8

Making a Measurement 1-13

The Menu Bar 1-17

The Softkey Panels 1-18

Laser Safety Considerations 1-29

Product Options and Accessories 1-30

Getting Started

1-2

Getting Started

Product Overview

The 86140B series of optical spectrum analyzers provide fast, accurate, and

comprehensive measurement capabilities for spectral analysis.

• Full-featured SCPI commands for programming instruments over LAN

• Display-off feature for making faster measurements

• Remote file saving and printing for outputting measurement results

• Filter mode for accurate and flexible measurements

• Built-in applications for accelerating test times

Filter Mode The Agilent 86144B and 86146B filter mode allows single dense wavelength

division multiplexing (DWDM) to be isolated and routed to external test

equipment. The filter mode capability is built-in to internal applications to

allow for fast and easy implementation of channel dropping. For Agilent

86146B instruments, this mode also allows the ability to measure time resolve

chirp (TRC).

Built-in

Applications

Built-in applications allow fast, repeatable measurements for WDM systems,

lasers, amplifiers, and passive components. These applications can be added

through a firmware upgrade.

WDM Application

This application allows you to measure DWDM sub-system components, (such

as transmission sub-systems, optical add/drop multiplexers, and multiplexers/

de-multiplexers) for parameters such as optical signal-to-noise ratio (OSNR),

channel wavelength, channel power, and span tilt.

Passive Component Test Application

This application simplifies the testing of passive components, such as filters,

couplers, and isolators by defining a test plan that measures parameters such

as insertion and return loss, bandwidth, and filter shape.

1-3

Getting Started

Product Overview

Source Test Application

This application offers automated optical source and laser characterization.

Amplifier Test Application

This application simplifies the process of characterizing gain and noise figure

of optical amplifiers such as EDFA’s, SOA’s and Raman amplifiers.

1-4

Getting Started

Product Overview

Agilent 86140B Front and Rear Panels

1-5

Getting Started

Product Overview

1-6

Getting Started

Product Overview

Optical Spectrum Analyzer Display

Figure 1-1. Optical Spectrum Analyzer Display

1-7

Getting Started

Product Overview

Figure 1-2. Display Annotations

1-8

Getting Started

Setting Up the Analyzer

Step 1. Receive and Inspect the Shipment

Table 1-1. Items in a Standard Agilent 86140B Series Shipment

Description Product Number

Item

Quantity

BNC Cable (24 inches) 8120-1839 1

GPIB Cable 8120-3444 1

FC/PC Dust Cap 1401-0291 2

English User’s Guide Manual 86140-90068 1

Application Guide 86140-90071 1

Programming Guide 86140-90069 1

Quick Start Card 86140-90087 1

1-9

Getting Started

Setting Up the Analyzer

Inspect the shipping container for damage.

Inspect the instrument.

Verify that you received the options and accessories you ordered.

Keep the shipping container and cushioning material until you have inspected

the contents of the shipment for completeness and have checked the optical

spectrum analyzer mechanically and electrically.

If anything is missing or defective, contact your nearest Agilent Technologies

Sales Office. Refer to “Returning the Instrument for Service” on page 6-21. If

the shipment was damaged, contact the carrier, then contact the nearest Agi-

lent Technologies Sales Office. Keep the shipping materials for the carrier’s

inspection. The Agilent Technologies Sales Office will arrange for repair or

replacement at Agilent Technologies’ option without waiting for claim settle-

ment.

Step 2. Connect Accessories and Power Cord

Although you can operate all instrument functions using only the front-panel

keys, and trackball on portable models, these accessories make your optical

spectrum analyzer easier to use. Connect any standard PC-compatible mouse

(or other pointing device), keyboard, or external VGA-compatible display.

1-10

Getting Started

Setting Up the Analyzer

CAUTION Do not stack other objects on the keyboard; this will cause self-test failures on

power-on.

You can connect a PCL-language printer (for example, an HP

1

LaserJet) to the

instrument’s rear panel Parallel connector. Use a parallel Centronics printer ca-

ble, such as an HP C2950A (2 m) or HP C2951A (3 m).

The line cord provided is matched by Agilent Technologies to the country of

origin on the order. Refer to “Accessories” on page 1-31.

1. HP and Hewlett-Packard are U.S. registered trademarks of Hewlett-Packard Company.

1-11

Getting Started

Setting Up the Analyzer

Step 3. Apply Power to Instrument

Press the power switch at the lower left-hand corner of the front panel.

After a short initialization period, the display will look similar to the picture on

this page.

Allow the instrument to warm up for at least 1 hour.

Step 4. Clean Connectors and Prepare for Measurements

CAUTION Fiber-optic connectors are easily damaged when connected to dirty or

damaged cables and accessories. The front-panel INPUT connector of the

Agilent 86140B series is no exception. When you use improper cleaning and

handling techniques, you risk expensive instrument repairs, damaged cables,

and compromised measurements. Before you connect any fiber-optic cable to

the Agilent 86140B series optical spectrum analyzer, refer to “Cleaning

Connections for Accurate Measurements” on page 6-8.

CAUTION A front-panel connector saver is provided with Agilent 86140B series

instruments. Attach the connector saver to the front-panel INPUT connector of

the instrument. You can now make your connections to the connector saver

instead of the instrument. This will help prevent damage to the front-panel

INPUT connector of the instrument. Damage to the front-panel INPUT connector

is expensive in terms of both repair costs and down-time. Use the front-panel

connector saver to prevent damage to the front-panel INPUT connector.

After the instrument has warmed up for at least 1 hour, perform an auto align

Table 1-2. Line Power Requirements

Power 115 VAC: 110 VA MAX. / 60 WATTS MAX. / 1.1 A MAX.

230 VAC: 150 VA MAX. / 70 WATTS MAX. / 0.6 A MAX.

Voltage nominal: 115 VAC / 230 VAC

range 115 VAC: 90–132 V

range 230 VAC: 198–254 V

Frequency nominals: 50 Hz / 60 Hz

range: 47–63 Hz

Note

All product specifications apply to measurements made without using the front-panel

connector saver.

1-12

Getting Started

Setting Up the Analyzer

by pressing the front panel Auto Align button. This will ensure optimal ampli-

tude accuracy, and can correct for any mis-alignment caused by the instrument

shipment.

To learn more about this or any Agilent Technologies product, visit our web

site at http://www.agilent.com/cm/index.shtml. Or, to learn more about fiber

optic test equipment, follow this path from the address listed:

1 Click Communications Products.

2 Click Lightwave Measurement Solutions.

3 Click Communications Solutions and then select Optical and Photonic

Solutions.

1-13

Getting Started

Making a Measurement

This procedure will introduce you to the Agilent 86140B series optical spec-

trum analyzer front panel controls. By following this procedure you will do the

following:

• Perform an auto alignment

• Perform a peak search

• Use a delta marker

• Print the display

Refer to “The Menu Bar” on page 1-17 and “The Softkey Panels” on page 1-18.

Instrument setup

A source signal must be present at the input of the optical spectrum analyzer.

In this procedure a Fabry-Perot laser is used as the source. You can use

another source or the optional 1310/1550 nm

EELED. If another source is being

used, the display will differ from those shown.

To set the OSA to a known state

• Press the front-panel Preset key to set the instrument to a known state. For

a complete description of preset conditions, see page 3-65.

1-14

Getting Started

Making a Measurement

To perform an Auto Align

For maximum amplitude accuracy, perform an automatic alignment whenever

the optical spectrum analyzer has been moved, subjected to large temperature

changes, or following warm-up. See “Auto Align” on page 3-10 for more infor-

mation.

1 Connect a fiber from the source to the input connector of the optical spectrum

analyzer. Be sure to follow the good connector practices described in “Cleaning

Connections for Accurate Measurements” on page 6-8.

2 Enable the source. Press Markers > Peak Search to find the peak signal power.

3 Press the front-panel Auto Align key to optimize the detection of the incoming

signal. This takes a few moments to complete.

To perform a peak search

4 Press the front-panel Auto Meas key to locate and zoom-in on the signal. Please

wait until the Auto Measure routine is complete. A marker is placed on the peak

of the displayed signal.

Trace with normal marker.

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Agilent Technologies 86140B User manual

Agilent Technologies 86140B User manual

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