Tektronix P6703B Manuale utente

Instructions

P6701B, P6703B & P6723

O/E Converters

070-9890-02

1

www.tektronix.com

*P070989002*

070989002

Tektronix products are covered by U.S. and foreign patents, issued and

pending. Information in this publication supercedes that in all previously

published material. Specifications and price change privileges reserved.

Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

WARRANTY

Tektronix warrants that the products that it manufactures and sells will be free from defects

in materials and workmanship for a period of one (1) year from the date of shipment. If a

product proves defective during this warranty period, Tektronix, at its option, either will

repair the defective product without charge for parts and labor, or will provide a

replacement in exchange for the defective product.

In order to obtain service under this warranty, Customer must notify Tektronix of the

defect before the expiration of the warranty period and make suitable arrangements for the

performance of service. Customer shall be responsible for packaging and shipping the

defective product to the service center designated by Tektronix, with shipping charges

prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to

a location within the country in which the Tektronix service center is located. Customer

shall be responsible for paying all shipping charges, duties, taxes, and any other charges for

products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or

improper or inadequate maintenance and care. Tektronix shall not be obligated to furnish

service under this warranty a) to repair damage resulting from attempts by personnel other

than Tektronix representatives to install, repair or service the product; b) to repair damage

resulting from improper use or connection to incompatible equipment; c) to repair any

damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a

product that has been modified or integrated with other products when the effect of such

modification or integration increases the time or difficulty of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER

WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS

DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR

FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY

TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND

EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF

THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE

FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL

DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR

HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

Service Assurance

If you have not already purchased Service Assurance for this product, you may

do so at any time during the product’s warranty period. Service Assurance

provides Repair Protection and Calibration Services to meet your needs.

Repair Protection extends priority repair services beyond the product’s

warranty period; you may purchase up to three years of Repair Protection.

Calibration Services provide annual calibration of your product, standards

compliance and required audit documentation, recall assurance, and reminder

notification of scheduled calibration. Coverage begins upon registration; you

may purchase up to five years of Calibration Services.

Service Assurance Advantages

HPriced well below the cost of a single repair or calibration

HAvoid delays for service by eliminating the need for separate purchase

authorizations from your company

HEliminates unexpected service expenses

For Information and Ordering

For more information or to order Service Assurance, contact your Tektronix

representative and provide the information below. Service Assurance may not

be available in locations outside the United States of America.

Name VISA or Master Card number and expiration

Company date or purchase order number

Address Repair Protection (1,2, or 3 years)

City, State, Postal code Calibration Services (1,2,3,4, or 5 years)

Country Instrument model and serial number

Phone Instrument purchase date

P6701B, P6703B & P6723 Instructions 1

Table of Contents

General Safety Summary 2............................

Preface 4............................................

Related Manuals 4....................................

Contacting Tektronix 4.................................

Getting Started 5.....................................

Product Description 5..................................

Options 7............................................

Standard Accessories 7.................................

Optional Accessories 9.................................

Installation 12.........................................

Instruments with the TekProbe II Interface 12.............

Instruments without the TekProbe II Interface 12..........

Operating Basics 13...................................

Operating Safety 13....................................

Cleaning 13...........................................

Equipment Required 14..............................

Procedure 14.......................................

Handling 15...........................................

Optical Input 15.......................................

Electrical Output 16....................................

Correcting for Conversion Gain 16........................

Setup 17.............................................

P6701B and P6703B Specifications 20....................

Warranted Characteristics 20.............................

Typical Characteristics 22...............................

Nominal Characteristics 24..............................

P6723 Specifications 25................................

Warranted Characteristics 25.............................

Typical Characteristics 26...............................

Nominal Characteristics 27..............................

2P6701B, P6703B & P6723 Instructions

General Safety Summary

Review the following safety precautions to avoid injury and prevent

damage to this product or any products connected to it. To avoid

potential hazards, use this product only as specified.

To Avoid Fire or Personal Injury

Observe All Terminal Ratings. To avoid fire or shock hazard, observe all

ratings and marking on the product. Consult the product manual for

further ratings information before making connections to the

product.

Do Not Operate Without Covers. Do not operate this product with

covers or panels removed.

Wear Eye Protection. Wear eye protection if exposure to high-intensity

rays or laser radiation exists.

Do Not Operate With Suspected Failures. If you suspect there is damage

to this product, have it inspected by qualified service personnel.

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in an Explosive Atmosphere.

Keep Product Surfaces Clean and Dry.

General Safety

P6701B, P6703B & P6723 Instructions 3

Safety Terms and Symbols

Terms in This Manual. These terms may appear in this manual:

WARNING. Warning statements identify conditions or practices that

could result in injury or loss of life.

CAUTION. Caution statements identify conditions or practices that

could result in damage to this product or other property.

Terms on the Product. These terms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you

read the marking.

WARNING indicates an injury hazard not immediately accessible as

you read the marking.

CAUTION indicates a hazard to property including the product.

Symbols on the Product. These symbols may appear on the product:

Protective Ground

(Earth) Terminal

CAUTION

Refer to Manual

Double

Insulated

WARNING

High Voltage

4P6701B, P6703B & P6723 Instructions

Preface

This manual contains instructions and specifications for using the

P6701B, P6703B, and P6723 O/E Converters.

Related Manuals

For performance verification procedures, adjustment procedures, list

of replaceable parts, and other service information, refer to the

P6701B, P6703B, & P6723 Service Manual (070-9892-XX).

Contacting Tektronix

Phone 1-800-833-9200*

Address Tektronix, Inc.

Department or name (if known)

14200 SW Karl Braun Drive

P.O. Box 500

Beaverton, OR 97077

USA

Web site www.tektronix.com

Sales

support

1-800-833-9200, select option 1*

Service

support

1-800-833-9200, select option 2*

Technical

support

Email: techsupport@tektronix.com

1-800-833-9200, select option 3*

6:00 a.m. -- 5:00 p.m. Pacific time

*This phone number is toll free in North America. After office hours, please

leave a voice mail message. Outside North America, contact a Tektronix sales

office or distributor; see the Tektronix web site for a list of offices.

P6701B, P6703B & P6723 Instructions 5

Getting Started

This section contains a description of the P6701B, P6703B, and

P6723 O/E Converters and information about features, options,

accessories, and proper installation.

Product Description

The P6701B, P6703B, and P6723 products (Figure 1) are optical-to-

electrical (O/E) converters that convert optical communication and

optical video signals into electrical signals for display on an

oscilloscope.

HThe P6701B analog converter accepts short wavelength signals

(500 to 950 nm) present in multimode fibers. Conversion gain of

1V/mW is calibrated at 780 nm.

HThe P6703B analog converter accepts longer wavelength signals

(1100 to 1600 nm) present in singlemode or multimode fibers.

Conversion gain of 1V/mW is calibrated at 1310 nm.

HThe P6723 digital converter views the digital content of optical

signals (1100 to 1600 nm) with data rates up to 650 Mb/s. The

P6723 converts the digital content of the optical signal to an

electrical signal with a constant voltage of approximately 1 Vp-p .

Figure 1: P6701B, P6703B, and P6723 O/E Converters

Getting Started

6P6701B, P6703B & P6723 Instructions

The P6701B, P6703B, and P6723 O/E Converters have the

TekProbe II interface which is standard on Tektronix TDS, 1140X,

and DSA600 series oscilloscopes. The interface supplies power to

the converter, selects the correct vertical scale (watts/division), and

automatically sets the 50 Ωtermination on the oscilloscope input.

Figure 2 shows the input connector of the TekProbe II interface.

Figure 2: TekProbe II interface (input)

To adapt the P6701B, P6703B, and P6723 O/E Converters to

measurement instruments that do not have the TekProbe II interface,

order the Tektronix 1103 TekProbe Power Supply.

Getting Started

P6701B, P6703B & P6723 Instructions 7

Options

Table 1 lists the options available for the P6701B, P6703B, and

P6723 O/E Converters. These options must be ordered when you

purchase the O/E converter.

Table 1: Options

Accessory Description

Calibration data (Option 95). Option 95 documents the

measurements taken during calibration.

0

dB

Frequency

Frequency response data (Option FR). Option FR documents

the frequency response of the O/E converter.

Standard Accessories

Table 2 shows the standard accessories of the P6701B, P6703B, and

P6723 O/E Converters.

Getting Started

8P6701B, P6703B & P6723 Instructions

Table 2: Standard accessories

Accessory Description

FC--FC inline adapter. Adapter for connecting FC male to the FC

male input of the converters.

Replacement part number: 131-6252-00

ST--FC inline adapter. Adapter for connecting ST male to the FC

male input of the converters.

Replacement part number: 131-6250-00

SC--FC inline adapter. Adapter for connecting SC male to the

FC male input of the converters.

Replacement part number: 131-6251-00

Calibration certificate. A certificate of traceable calibration is

provided with every instrument shipped.

Set of user instructions. (Includes this book) Provides

instructions for operating the P6701B, P6703B, and P6723 O/E

Converters in English, French, German, and Japanese.

Replacement part number: 070-9890-XX

Service information. Includes the performance verification

procedure list of replaceable parts (English only).

Replacement part number: 070-9892-XX

Getting Started

P6701B, P6703B & P6723 Instructions 9

Optional Accessories

Table 3 lists the optional accessories available for the P6701B,

P6703B, and P6723 O/E Converters.

Table 3: Optional accessories

Accessory Description

Fiber optic cables. Assorted jumper cables extend the input

cable and adapt the for connection to types of cables or

connectors.

FC--Diamond 2.5 mm singlemode. 2 m fiber jumper cable

g

j

p

Part number: 174-1497-00

FC--Diamond 3.5 mm singlemode. 2 m fiber jumper cable

Part number: 174-1385-00

F

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Part number: 174-1386-00

FC--FC singlemode. 2 m fiber jumper cable

Part number: 174-1387-00

F

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Part number: 174-1388-00

FC--FC multimode. 62.5 m, 2 m fiber jumper

Part number: 174-2322-00

FC--Biconic multimode. 62.5 m, 2 m fiber jumper cable

Part number: 174-2323-00

FC--SMA multimode. 62.5 m, 2 m fiber jumper cable

Part number: 174-2324-00

FC 3-port 10%/90% optical splitter for singlemode fiber.

Comes with FC connectors.

Part number: 174-3737-00

Getting Started

10 P6701B, P6703B & P6723 Instructions

Table 3: Optional accessories (cont.)

Accessory Description

1103 Power Supply. Order the 1103 power supply for

instruments that do not have the TekProbe Interface. Options are

available for the following countries or regions.

Standard. North America and Japan

Option A1. European

Option A2. UK

Option A3. Australia

Option A5. Switzerland

50 Ωtermination. Terminates the output of the 1103 power

supply to the required 50 Ωif the oscilloscope does not have a

50 Ωinput setting.

Part number: 011-0049-01

50 Ωprecision BNC cable. Extends the output of the 1103

p

ower su

p

l

y

.

p

o

w

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r

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.

Part number: 012-0482-00

BNC female to SMA male adapter. Adapts BNC cable to SMA

connector.

Part number: 015-0554-00

10 dB in-line optical attenuator. Comes with FC connector.

Part number: 119-5118-00

Getting Started

P6701B, P6703B & P6723 Instructions 11

Table 3: Optional accessories (cont.)

Accessory Description

DIN-FC adapter. Adapter for connecting DIN male to the FC

male input of the converters.

Part number: 020-2209-00

SDH/SONET and FibreChannel filters. (P6701B and P6703B

only) Precision filters that provide nominal Bessel-Thompson

frequency response for the following SDH/SONET and

FibreChannel data rates:

FS156 (SDH/SONET). Filter for OC-3/STM-1 (155.52 Mb/s)

FS622 (SDH/SONET). Filter for OC-12/STM-4 (622.08 Mb/s)

Getting Started

12 P6701B, P6703B & P6723 Instructions

Installation

Before you connect the output of the P6701B, P6703B, and P6723

O/E Converters, determine whether or not your instrument has the

TekProbe II interface (see Figure 2 on page 6).

Instruments with the TekProbe II Interface

For instruments that have the TekProbe II interface, simply connect

the converter to the oscilloscope input. The interface provides

connections for power, signal, and scale factor coding.

NOTE. TDS 400 and TDS 400A series oscilloscopes always interpret

the P6701B, P6703B, and P6723 attenuation setting as ÷10 and

display units as V instead of mW. When you use the O/E converters,

divide the measurement (or scale factor) by 10 and interpret

measurements as milliwatts instead of volts.

Instruments without the TekProbe II Interface

For instruments that do not have the TekProbe interface, order the

optional 1103 TekProbe Power Supply. Accessories are also

available to terminate the output into the required 50 Ω.

P6701B, P6703B & P6723 Instructions 13

Operating Basics

This section presents the basic information necessary you need to

know to operate the P6701B, P6703B, and P6723 O/E Converters.

Operating Safety

WARNING. To avoid eye injury, wear eye protection if risk of

exposure to high-intensity rays or laser radiation exists.

Cleaning

Small dust particles and oils can easily contaminate fiber-optic

connectors and reduce or block the signal. Take care to preserve the

integrity of your connectors by keeping them free of contamination.

CAUTION. To prevent loss of optical power or damage to the

fiber-optic connectors, keep the connectors clean at all times.

When cleaning the connectors with a swab, use gentle circular

motions. Use only high quality cleaning supplies that are non-abra-

sive and leave no residue.

To reduce the need for cleaning, immediately replace protective caps

on the fiber-optic connectors when not in use.

Operating Basics

14 P6701B, P6703B & P6723 Instructions

To remove contamination, clean the fiber-optic connectors using the

following procedure:

Equipment Required

HClean compressed air

HFiber-optic cleaning swabs

HIsopropyl alcohol

Procedure

1. Hold the can of compressed air upright and spray the can into the

air to purge any propellant.

2. Spray the clean compressed air on the connectors to remove any

loose particles or moisture.

3. Moisten a clean fiber-optic swab with isopropyl alcohol then

lightly swab the surfaces of the connectors.

4. Spray the clean compressed air on the connectors again to

remove any loose particles or isopropyl alcohol.

NOTE. Cleaning kits for fiber-optic connectors are available from a

number of suppliers.

Operating Basics

P6701B, P6703B & P6723 Instructions 15

Handling

Even though the fiber-optic cable of the P6701B, P6703B, or P6723

O/E Converter is protected by a jacket and strain relief, the

fiber-optic cable should be handled carefully at all times.

CAUTION. To avoid damaging the P6701B, P6703B, and P6723 O/E

Converters, take the following precautions:

Do not crush, crimp, or sharply bend the fiber optic cable.

Do not pull or yank the fiber-optic cable.

Do not drop the converter assembly since damage and misalignment

of the photodiode optical assembly can result. Store the converter in

a secure location when not in use.

Replace the protective cap on the connector when the converter is

not in use.

Optical Input

The P6701B, P6703B, and P6723 O/E Converters can be connected

to optical fibers with a core diameter of up to 62.5 m through one

of the FC, ST, SC, or DIN adapters. Adapter cables that aid in

connecting many other popular optical connectors are also available.

(Refer to Optional Accessories on page 9.)

CAUTION. To maintain the high performance (low return loss) of the

O/E converter, connect an adapter and cable between the input of

the O/E converter and the device under test. When you make

connections to other devices, leave the adapter and cable in place to

protect the optical connector of the O/E converter from wear.

If you connect fiber cores larger than 62.5 m, the O/E converters

may still couple light, but the mismatch in core diameter will cause

lower conversion gain and high insertion loss.

Operating Basics

16 P6701B, P6703B & P6723 Instructions

Electrical Output

The P6701B and P6703B O/E converters output approximately

1 V/mW across 50 Ωat the nominal calibrated wavelength (780 nm

for the P6701B converter and 1310 nm for the P6703B converter).

The P6723 O/E converter provides a nominal NRZ (non return to

zero) signal (~1V

p-p) that is AC-coupled to the 50 Ωoutput. The

P6723 converter provides a constant peak-to-peak amplitude

electrical output for long wavelength optical signals (1310/1550 nm)

ranging from --8 dBm to --28 dBm average optical power.

Correcting for Conversion Gain

You can compensate your measurement for wavelengths that have a

conversion gain other than one. For example, if you are using a

P6703B to measure a signal with a wavelength of 1550 nm, the

conversion gain at that wavelength is typically 1.1 V/mW versus

1.0 V/mW at 1310 nm (see Figure 7 on page 23). To correct the

measurement to 1 V/mW, multiply the measurement by 0.909 (the

reciprocal of 1.1).

If your measurement instrument is so equipped, you can automatical-

ly multiply displayed waveforms or measurements by the appropriate

correction factor. Refer to your instrument manual for details.

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