Yokogawa AQ7270 User Manual

User’s Manual

AQ7270 Series OTDR

IM 735020-01E

7th Edition

Product Registration

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PIM 103-03E

Foreword

Notes

Thank you for purchasing the AQ7270 Series (AQ7270/AQ7275) OTDR (Optical Time Domain Reflectometer). This user’s manual contains useful information about the instrument’s functions and operating procedures and the handling precautions of the AQ7270 Series OTDR. To ensure correct use, please read this manual thoroughly before beginning operation. After reading the manual, keep it in a convenient location for quick reference whenever a question arises during operation. Three manuals, including this one, are provided as manuals for the AQ7270 Series OTDR. Please read all of them.

Manual Title Manual No. Description

AQ7270 Series OTDR User’s Manual IM 735020-01E This manual. Explains all functions

and procedures of the AQ7270/ AQ7275 excluding the remote control functions.

AQ7270 Series OTDR IM 735020-02E Explains briefly the functions Operation Guide and basic operations.

AQ7270 Series OTDR Communication IM 735020-17E Explains the functions for Interface User’s Manual controlling the AQ7270/AQ7275 using comm

unication commands.

• The contents of this manual are subject to change without prior notice as a result of continuing improvements to the instrument’s performance and functions. The figures given in this manual may differ from those that actually appear on your screen.

•

Every effort has been made in the preparation of this manual t

o ensure the accuracy of its contents. However, should you have any questions or find any errors, please contact your nearest YOKOGAWA dealer.

• Copying or reproducing all or any part of the contents of this manual without YOKOGA

WA’s permission is strictly prohibited.

Trademarks

• The fiber Xplorer is the registered trademark of Yokogawa Electric Corporation.

• Microsoft, Windows, and Windows XP are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

• Adobe and Acrobat are trademarks of

• For purposes of this manual, the TM and ® symbols do not accompany their respective trademark names or registered trademark names.

• Other company and product names are trademarks or registered trademarks of their respective holders.

Revisions

• 1st Edition: December 2006

• 2nd Edition: January 2007

• 3rd Edition:

• 4th Edition:

• 5th Edition:

• 6th Edition:

• 7th Edition: September 2011

IM 735020-01E

December 2007

February 2008

December 2008

June 2009

Adobe Systems Incorporated.

Checking the Contents of the Package

Unpack the box and check the contents before operating the instrument. If some of the contents are not correct or missing or if there is physical damage, contact the dealer from which you purchased them.

AQ7270 Series

MODEL AQ7270

MODEL Suffix Code Description

735020

1550 nm, 32 dB 735021 1650 nm, 30 dB 735022 1310/1550 nm, 34/32 dB 735023 1310/1550 nm, 40/38 dB 735024 1550/1625 nm, 38/35 dB 735025 1310/1490/1550 nm, 34/30/32 dB 735026 1310/1550/1625 nm, 34/32/28 dB 735027 1310/1550/1650 nm, 34/32/30 dB 735028 1310/1550/1625 nm, 40/38/35 dB 735029 850/1300 nm, 22.5/24 dB (GI (62.5/125 735030

AQ7275

MODEL Suffix Code Description

735031

1650 nm, 30 dB (15dB if the suffix code is /PN) 735032 1310/1550 nm, 34/32 dB (36/34 dB if the suffix code is /DR) 735033 1310/1550 nm, 40/38 dB (23/21dB if the suffix code is /PN) 735034 1310/1550 nm, 43/41 dB 735035 1310/1490/1550 nm, 34/30/32 dB 735036 1310/1550/1625 nm, 40/38/33 dB (23/21/16dB if the suffix code is /PN) 735037 1310/1550/1650 nm, 40/38/30 dB 735038 1310/1550/1625 nm, 40/38/36 dB (23/21/16dB if the suffix code is /PN) 735040 850/1300 nm, 22.5/24 dB (GI (62.5/125

735041 850/1300 nm, 22.5/24 dB (GI (62.5/125mm))

850/1300 nm, 22.5/24 dB (GI (62.5/125mm))

1310/1550 nm, 34/32 dB

1310/1550 nm, 40/38 dB

21.5/23 dB (GI (50/125mm)) 1310/1550 nm, 40/38 dB

m))

IM 735020-01E

Checking the Contents of the Package

AQ7270/AQ7275

MODEL Suffix Code Description

Optical connector -SCC SC connector (fixed)

-FCC FC Connector (fixed)

-ASC Angled PC SC Connector *

-NON No universal adapter

-USC SC universal adapter

-UFC FC universal adapter

Language -HE English

-HC Chinese/English

-HK Korean/English

-HR Russian/English

Power cord -D UL/CSA standard Max. rated voltage: 125 V

-F VDE standard Max. rated votlage: 250 V

-R AS standard Max. rated votlage: 250 V

-Q BS standard Max. rated votlage: 250 V

-H GB standard Max. rated votlage: 250 V

-P EK standard Max. rated votlage: 250 V

Options /PM Optical power monitor function * /SLS Stability Light source function * /LS Light source function * /VLS Visible Light source function * /PL Internal printer and LAN (Ethernet interface) /DF Dummy fiber (SMF) * /SB Shoulder belt /DR Dynamic range expansion (2 dB) * /PN

PON measurement*8 (firmware version 2.07 or later)

*1 Supported by the SMF port of the 735031 to 735038, 735040 and 735041, or supported by the visible light source output port of the 735031 to 735035 and 735038.

Not supported by 735021, 735029 and 735031, and the MMF of 735030, 735040 and 735041

Not supported by 735020 to 735030, and 735040

Not supported by 735029, 735032, 735033 and 735037, and the MMF of 735030 and 735040

Supported by 735031 to 735035 and 735038

Not supported by 735029, 735030, 735040 and 735041

Supported by 735032

Supported by 735031, 735033, 735036 and 735038

IM 735020-01E

• No. (Instrument No.)

When contacting the dealer from which you purchased the instrument, please give

them this number.

iii

Power cord UL/CSA St’d

A1068WD

*1 Included if the suffix code is /PL. *2 Included if the suffix code is -USC. *3 Included if the suffix code is -UFC. *4 Included if the suffix code is /SB.

Power cord VDE St’d

A1071WD

Power cord AS St’d

A1070WD

Power cord BS St’d

A1069WD

Power cord GB St’d

A1076WD

AQ7270 Series OTDR User’s Manual B8070TH

AC adapter 739870-D/F/R/Q/H/P

Battery pack 739880

Printer roll paper A9010ZP

Universal connector (SC)

SU2005A-SCC

Universal connector (FC)

SU2005A-FCC

Hand belt B8070CX

Shoulder belt

B8070CY

Power cord EK St’d

A1078WD

Checking the Contents of the Package

Standard Accessories

The standard accessories below are supplied with the instrument.

Optional Accessories (Sold Separately)

The optional accessories below are available for purchase separately.

Name Part Number Notes

Soft carrying case 738960 Soft case Emulation software 735070 Waveform analysis application Printer roll paper A9010ZP 80 mm width × 25 m roll: 10 rolls per unit Battery pack(reserve) 739880 External Large Capacity Battery 739881 Attached Connecting Cord and Battery

case Universal adapter(SC) SU2005A-SCC SC type Universal adapter(FC) SU2005A-FCC FC type Shoulder belt B8070CY AC adapter(reserve) 739870-D UL/CSA standard 739870-F VDE standard 739870-R AS standard 739870-Q BS standard 739870-H GB standard, Complied with CCC 739870-P EK standard

IM 735020-01E

Safety Precautions

Ni-MH

To use the instrument safely and effectively, be sure to observe the precautions given in the user’s manual.

The following symbols are used on this instrument.

Warning: handle with care. Refer to the user’s manual or service manual.

This symbol appears on dangerous locations on the instrument which require special instructions for proper handling or use. The same symbol appears in the corresponding place in the manual to identify those instructions.

Hazard, radiation of laser apparatus

Direct current

Stand-by (power)

Recycle

Double insulation mark (equipment protected throughout by double insulation or

reinforced insulation)

IM 735020-01E

Safety Precautions

Make sure to comply with the precautions below. Not complying might result in injury or death, or damage to the instrument.

WARNING

Use the Correct Power Supply

Before connecting the power cord, ensure that the source voltage matches the rated supply voltage of the AC adapter and that it is within the maximum rated voltage of the provided power cord.

Use the Correct Power Cord

Use only the power cord that comes with the instrument. Do not use it for other devices.

Use the Correct AC Adapter

Use only the AC adapter specified for the instrument. Do not use it for other devices.

Use Only the Designated Battery pack

Use only the battery pack specified for the instrument. Do not use it for other devices. Use only this instrument or a charger specified by YOKOGAWA to charge the battery pack. If the fast charge does not finish after three hours or more, stop charging the battery pack immediately. Because the electrolyte solution inside the battery pack is alkaline, harm can be done to the clothes or skin, if the battery pack leaks or explodes and the solution comes in contact. If the electrolyte solution enters the eye, it can cause blindness. In such cases, do not rub the eye. Rinse thoroughly with water and immediately consult your eye doctor. To prevent the possibility of electric shock and accidents, always turn OFF the power switch and remove the AC adapter power supply from the instrument when replacing the battery pack. Do not throw the battery pack into fire or apply heat to it. This can cause dangerous explosions or spraying of the electrolytes.

Do Not Look at the Laser Light

Do not look at the laser’s direct ray, reflected ray from a mirror, or indirect ray without the proper protective eyewear. In addition, avoid being exposed to the laser light. It can cause blindness or damage to the eye.

Do Not Operate in an Explosive Atmosphere

Do not use the thermocouple in a location where any flammable or explosive gas/ vapor is present. Operation in such an environment constitutes a safety hazard.

Do Not Remove Covers

The covers should be removed by YOKOGAWA’s qualified personnel only. Opening the cover is dangerous, because some areas inside the instrument have high voltages.

Carrying and Moving the Instrument

Remove all power cords and connection cables from the main unit before moving the instrument. When carrying the instrument, hold it firmly by the handle. Also, if storage media is inserted into the instrument, always remove the storage media before carrying or moving the instrument. Never leave the media inserted when carrying or moving. The storage media can become damaged.

Apply Correct Signals to the Optical Connectors (PORT1 and PORT2)

Do not apply light that is —5 dBm or greater to the AQ7270/AQ7275 optical connectors (PORT1 and PORT2). Doing so may damage the AQ7270/AQ7275.

IM 735020-01E

CAUTION

When Measuring with the Same Wavelength as the Communication Light

Most instrument models use the same wavelength for measurement as is used for communication. If communication light is present in an optical fiber being measured, this has an affect on the communication itself. Take sufficient precautions to avoid interruption of communications. The measurements by the instrument may also be incorrect, therefore the measuring environment (presence or absence of communication light, etc.) should be carefully considered.

When Measuring with a Wavelength Different from the Communication Light (1625/1650 nm)

When there is communication light in the fiber under test, use a wavelength different from the communication light for measurement. If no cutoff filter of 1625 nm or 1650 nm is installed in an instrument connected to the system under test, or depending on the instrument’s lightfastness power rating or characteristics of the cutoff filter such as its attenuation, the pulse light output from the instrument can, in the worst case, damage the instrument. Check that an appropriate cutoff filter is installed and that there is no problem with the instrument’ s ratings, then take sufficient caution during use.

Safety Precautions

When Using the Angled PC SC Connector (Suffix Code:-ASC)

•

Use the same type of angled PC SC connector for the connected optical fiber

cable as well. The ferrule end of the angled PC SC connector is polished to an angle. I

other types of connectors are used, the end face of the connector may become

damaged.

• You can replace the

AQ7270/AQ7275 connector, but only with an SC type.

See below for operating environment limitations.

CAUTION

This product is a Class A (for industrial environments) product. Operation of this product in a residential area may cause radio interference in which case the user will be required to correct the interference.

IM 735020-01E

vii

Safety Precautions

INVISIBLE LASER RADIATION DO NOT VIEW DIRECTY WITH OPTICAL INSTRUMENTS CLASS 1M LASER PRODUCT (IEC 60825-1:2007)

Laser Class 1M Label

If the laser output is observed at a distance of 100mm or less from the laser beam emitting part by means of optical method (loupe, magnifying glass, microscope, etc.), this may cause eye injury.

VISIBLE LASER RADIATION AVOID DIRECT EYE EXPOSURE CLASS 3R LASER PRODUCT (IEC 60825-1:2007) MAX OUTPUT WAVELENGTH 5mW 650±20nm

Laser Class 3R Label

Avoid direct eye exposure

Safety Precautions for Laser Products

This instrument uses a laser light source. This instrument is a Class 1M laser product as defined by IEC60825-1 Safety of Laser Products-Part 1: Equipment Classification, Requirements and User’s Guide. In addition, the AQ7270/AQ7275 complies with 21 CFR 1040.10 except for the items that deviate from the standard as a result of complying with Laser Notice No.50 dated on June 24, 2007.

MODEL Class Center Wavelength Output Power

735020 1M 1550nm CW: ≤5mW@1550nm    PULSE: ≤200mW@1550nm    PULSEwidth:≤20us@1550nm(dutycycle:≤2.5%) 735021 1M 1650nm CW: ≤5mW@1650nm    PULSE: ≤32mW@1650nm    PULSEwidth:≤20us@1650nm(dutycycle:≤2.5%) 735022 1M 1310/1550nm CW: ≤5mW@1310/1550nm    PULSE: ≤200mW@1310/1550nm    PULSEwidth:≤20us@1310/1550nm(dutycycle:≤2.5%) 735023 1M 1310/1550nm CW: ≤5mW@1310/1550nm    PULSE: ≤200mW@1310/1550nm    PULSEwidth:≤20us@1310/1550nm(dutycycle:≤2.5%) 735024 1M 1550/1625nm CW: ≤5mW@1550/1625nm    PULSE: ≤200mW@1550/1625nm    PULSEwidth:≤20us@1550/1625nm(dutycycle:≤2.5%) 735025 1M 1310/1490/1550nm CW: ≤5mW@1310/1490/1550nm    PULSE: ≤200mW@1310/1490/1550nm    PULSEwidth:≤20us@1310/1490/1550nm(dutycycle:≤2.5%) 735026 1M 1310/1550/1625nm CW: ≤5mW@1310/1550/1625nm    PULSE: ≤200mW@1310/1550/1625nm    PULSEwidth:≤20us@1310/1550/1625nm(dutycycle:≤2.5%) 735027 1M 1310/1550/1650nm CW: ≤5mW@1310/1550/1650nm    PULSE: ≤200mW@1310/1550nm    PULSE: ≤32mW@1650nm    PULSEwidth:≤20us@1310/1550/1650nm(dutycycle:≤2.5%) 735028 1M 1310/1550/1625nm CW: ≤5mW@1310/1550/1625nm    PULSE: ≤200mW@1310/1550/1625nm    PULSEwidth:≤20us@1310/1550/1625nm(dutycycle:≤2.5%)

viii

IM 735020-01E

Safety Precautions

MODEL Class Center Wavelength Output Power

735029 1M 850/1300nm PULSE: ≤50mW@850nm         ≤100mW@1300nm    PULSEwidth:≤1us@850nm(dutycycle:≤5%)

    ≤5us@1300nm(dutycycle:≤0.6%) 735030 1M 850/1300nm PULSE: ≤50mW@850nm    

    ≤100mW@1300nm    PULSEwidth:≤1us@850nm(dutycycle:≤5%)     ≤5us@1300nm(dutycycle:≤0.6%)   1310/1550nm CW: ≤5mW@1310/1550nm    PULSE: ≤200mW@1310/1550nm    PULSEwidth:≤20us@1310/1550nm(dutycycle:≤2.5%) 735031 1M 1650nm CW: ≤5mW@1650nm    PULSE: ≤32mW@1650nm    PULSEwidth:≤20us@1650nm(dutycycle:≤2.5%)  3R 650nm CW: ≤5mW@650nm 735032 1M 1310/1550nm CW: ≤5mW@1310/1550nm    PULSE: ≤200mW@1310/1550nm    PULSEwidth:≤20us@1310/1550nm(dutycycle:≤2.5%)  3R 650nm CW: ≤5mW@650nm 735033 1M 1310/1550nm CW: ≤5mW@1310/1550nm    PULSE: ≤200mW@1310/1550nm    PULSEwidth:≤20us@1310/1550nm(dutycycle:≤2.5%)  3R 650nm CW: ≤5mW@650nm 735034 1M 1310/1550nm CW: ≤5mW@1310/1550nm    PULSE: ≤200mW@1310/1550nm    PULSEwidth:≤20us@1310/1550nm(dutycycle:≤2.5%)  3R 650nm CW: ≤5mW@650nm 735035 1M 1310/1490/1550nm CW: ≤5mW@1310/1490/1550nm    PULSE: ≤200mW@1310/1490/1550nm    PULSEwidth:≤20us@1310/1490/1550nm(dutycycle:≤2.5%)  3R 650nm CW: ≤5mW@650nm 735036 1M 1310/1550/1625nm CW: ≤5mW@1310/1550/1625nm    PULSE: ≤200mW@1310/1550/1625nm    PULSEwidth:≤20us@1310/1550/1625nm(dutycycle:≤2.5%) 735037 1M 1310/1550/1650nm CW: ≤5mW@1310/1550/1650nm    PULSE: ≤200mW@1310/1550nm    PULSE: ≤32mW@1650nm    PULSEwidth:≤20us@1310/1550/1650nm(dutycycle:≤2.5%) 735038 1M 1310/1550/1625nm CW: ≤5mW@1310/1550/1625nm    PULSE: ≤200mW@1310/1550/1625nm    PULSEwidth:≤20us@1310/1550/1625nm(dutycycle:≤2.5%)  3R 650nm CW: ≤5mW@650nm 735040 1M 850/1300nm PULSE: ≤50mW@850nm,PULSE:≤100mW@1300nm    PULSEwidth:≤1us@850nm(dutycycle:≤5%)     ≤5us@1300nm(dutycycle:≤0.6%)   1310/1550nm CW: ≤5mW@1310/1550nm    PULSE: ≤200mW@1310/1550nm    PULSEwidth:≤20us@1310/1550nm(dutycycle:≤2.5%) 735041 1M 850/1300nm PULSE: ≤50mW@850nm,PULSE:≤100mW@1300nm    PULSEwidth:≤1us@850nm(dutycycle:≤5%)     ≤5us@1300nm(dutycycle:≤0.6%)   1310/1550nm CW: ≤5mW@1310/1550nm    PULSE: ≤200mW@1310/1550nm    PULSEwidth:≤20us@1310/1550nm(dutycycle:≤2.5%)

IM 735020-01E

If the instrument is used in a manner not specified in this manual, the protection provided by the instrument may be impaired. Yokogawa Electric Corporation assumes no liability for the customer’s failure to comply with these requirements.

Waste Electrical and Electronic Equipment

Waste Electrical and Electronic Equipment (WEEE), Directive 2002/96/EC

(This directive is only valid in the EU.) This product complies with the WEEE Directive (2002/96/EC) marking

requirement. This marking indicates that you must not discard this electrical/ electronic product in domestic household waste.

Product Category With reference to the equipment types in the WEEE directive Annex 1, this

product is classified as a “Monitoring and Control instrumentation” product.

Do not

dispose in domestic household waste. When disposing products in the EU,

contact your local Yokogawa Europe B. V. office.

IM 735020-01E

Symbols and Notation Used in This Manual

Safety Markings

The following markings are used in this manual.

Improper handling or use can lead to injury to the user or damage

to the instrument. This symbol appears on the instrument to indicate that the user must refer to the users manual for special instructions. The same symbol appears in the corresponding place in the user’ s manual to identify those instructions. In the manual, the symbol is used in conjunction with the word “WARNING” or “CAUTION.”

WARNING

CAUTION

Calls attention to information that is important for proper operation of

Note

Calls attention to actions or conditions that could cause serious or

fatal injury to the user, and precautions that can be taken to prevent such occurrences.

Calls attention to actions or conditions that could cause light injury

to the user or damage to the instrument or the user’s data, and precautions that can be taken to prevent such occurrences.

the instrument.

Notations Used on Pages Describing Operating Procedures

On pages that describe the operating procedures in chapters 4 through 19, the following displayed characters, and terminology are used to distinguish the procedures from their explanations.

Procedure

Explanation

Carry out the procedure according to the step numbers. All

procedures are written with inexperienced users in mind; experienced users may not need to carry out all the steps.

This section describes the setup items and the limitations regarding

the procedures. It may not give a detailed explanation of the function. For a detailed explanation of the function, see chapter 2.

Unit

IM 735020-01E

Displayed Characters and Terminology Used in the Procedural Explanations

Panel Keys and Soft keys

Bold characters used in the procedural explanations indicate characters that are marked on the panel keys or the characters of the soft keys or menus displayed on the screen.

k Denotes 1000. Example: 12 kg, 100 kHz

Checking the Contents of the Package.............................................................................................ii

Safety Precautions ............................................................................................................................v

Waste Electrical and Electronic Equipment ......................................................................................x

Symbols and Notation Used in This Manual ....................................................................................xi

Chapter 1 Names and Functions of Parts

1.1 Front Panel ....................................................................................................................... 1-1

1.2 Rear Panel ....................................................................................................................... 1-2

1.3 Side Panel ........................................................................................................................

1.4 Display ..............................................................................................................................

Chapter 2 Measurement Overview

2.1 MeasurementConguration ............................................................................................. 2-1

2.2 Measurement Procedure .................................................................................................. 2-4

2.3 Viewing the Optical Pulse Measurement W

2.4 Distance Measurement ...................................................................................................2-11

Chapter 3 Measurement Preparation

3.1 Connecting the Power Supply .......................................................................................... 3-1

3.2 Connecting the Optical Fiber Cable ................................................................................. 3-5

3.3 Setting the Date and T

3.4 Loading the Printer Roll Paper (Option) ........................................................................... 3-9

3.5 Connecting the USB Interface ........................................................................................ 3-10

3.6 Connecting the Ethernet Interface (Option) .....................................................................3-1

3.7 Attaching the Belt ........................................................................................................... 3-12

ime ................................................................................................ 3-7

1-3 1-5

aveform ........................................................ 2-9

Chapter 4 Setting the Optical Pulse Measurement Conditions (Simple Full Auto

Mode)

4.1 Selecting the Test Wavelength ......................................................................................... 4-1

4.2 Selecting the Approximation Method ................................................................................ 4-3

4.3 Setting Other Items ......................................................................................................

.... 4-4

Chapter 5 Setting the Optical Pulse Measurement Conditions (Measurement

Wizard Mode)

5.1 Setting the Measurement Conditions ............................................................................... 5-1

5.2 Setting the Analysis Conditions ........................................................................................ 5-8

5.3 Setting

5.4 Setting the File ......................................................................................................

theDetectionConditionsofReectionandLossWaveforms .............................5-11

......... 5-16

Chapter 6 Setting the Optical Pulse Measurement Conditions (Detail Mode

(Manually Setting All Items))

6.1 Setting the Measurement Conditions ............................................................................... 6-1

6.2 Setting the Analysis Conditions ...................................................................................... 6-16

6.3 Setting the Multi Wavelength Measurement Conditions .................................................

6.4 Setting the Multi Wavelength

Analysis Conditions .......................................................... 6-25

6-22

xii

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Contents

Index

App

Chapter 7 Executing the Optical Pulse Measurement (Acquiring Waveforms)

7.1 Realtime Measurement .................................................................................................... 7-1

7.2 Averaging Measurement .................................................................................................. 7-5

7.3 Displaying the Measurement Conditions .......................................................................... 7-7

7.4 High Resolution Measurement of the Selected Location ................................................. 7-8

7.5 Measuring Multicore Fiber ...............................................................................................7-11

7.6 Warm-up Measurement .................................................................................................. 7-28

Chapter 8 Zooming the Waveform

8.1 Zooming the Display ......................................................................................................... 8-1

8.2 Moving the Waveform ....................................................................................................... 8-2

8.3 Initializing the Waveform Display ......................................................................................

8.4 Auto Zoom the Waveform Display ....................................................................................

8-3 8-4

Chapter 9 Macro Measurement

9.1 CreatingtheMeasurementConditions(DeningtheMacroConditions) ......................... 9-1

9.2 Saving the Macro Measurement Results ......................................................................... 9-3

9.3 Loading the Measurement Conditions .............................................................................. 9-9

9.4 Executing the Macro .......................................................................................................

9.5 Saving/Loading Macro Conditions .................................................................................. 9-13

Chapter 10 Measuring the Distance

10.1 Marker and Cursor Operation ......................................................................................... 10-1

10.2 Measuring the Distance .................................................................................................. 10-9

10.3 Moving the Measurement Reference ........................................................................... 10-12

Chapter 11 Measuring the Splice and Return Loss

11.1 Measuring the Splice Loss ..............................................................................................11-1

11.2 Measurement Taking the Adjacent Splice Loss into Consideration .................................11-7

11.3 Measuring

theReturnLossandReectionLevel ............................................................11-9

Chapter 12 Editing the Event List

12.1 Viewing the Measured Results ....................................................................................... 12-1

12.2 Editing the Waveform ..................................................................................................... 12-3

12.3 Editing the List ..............................................................................................................

Chapter 13 Detail Analysis of the Measured Waveform

13.1 Displaying the Multiple Waveforms ................................................................................ 13-1

13.2 2-Way Trace ................................................................................................................... 13-4

13.3 Difference W

13.4 Section Analysis ......................................................................................................

13.5 Fixing the Waveform

aveform ...................................................................................................... 13-9

..................................................................................................... 13-14

Chapter 14 Optical Power Monitoring (Option)

14.1 Calibration before the Measurement .............................................................................. 14-1

14.2 Setting the Reference ..................................................................................................... 14-2

14.3 Selecting the Display Unit .............................................................................................. 14-3

14.4 Selecting the W

14.5 Setting the Offset .......................................................................................................

14.6 Set the Threshold Level

avelength ...............................................................................................

.................................................................................................. 14-6

9-11

12-14

..... 13-12

14-4

..... 14-5

IM 735020-01E

xiii

Contents

Chapter 15 Light Source Operation (Option)

15.1 Light and Stabilized Light Source ................................................................................... 15-1

15.2 Visible Light Source ........................................................................................................ 15-3

Chapter 16 Checking Fiber End Faces

16.1 Using Fiber Inspection Probes to View the Status of Optional Fiber End Faces. .......... 16-1

Chapter 17 Multi Core Trace Comparison

17.1 Measuring Optical Pulses before Work and after Work .................................................. 17-1

17.2 ConguringtheCoreInformation ................................................................................. 17-10

17.3 Setting Measurement Conditions ................................................................................. 17-15

17.4 Setting

Analysis Conditions ..........................................................................................

Chapter 18 Saving, Loading, and Printing Files

18.1 Loading and Saving Files ............................................................................................... 18-1

18.2 Deleting or Copying the Files ......................................................................................... 18-8

18.3 Renaming the File ........................................................................................................

18.4 Creating, Deleting, and Copying Folders ..................................................................... 18-14

18.5 Printing ......................................................................................................

18.6 Entering Characters ..................................................................................................... 18-21

18.7 Creating Labels ......................................................................................................

18.8 Initializing (formatting) the internal memory ................................................................. 18-29

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

......

17-16

18-12

18-18

18-23

Chapter 19 Other Settings

19.1 Setting the System ......................................................................................................... 19-1

19.2 Setting the Display ......................................................................................................... 19-9

19.3 Setting the Network (/PL Option)

19.4 Network File T

19.5 Cable

InstallationCompletionNotication .................................................................... 19-23

ransfers ................................................................................................. 19-22

.................................................................................. 19-18

Chapter 20 Troubleshooting, Maintenance, and Inspection

20.1 Troubleshooting .............................................................................................................. 20-1

20.2 Error Messages .............................................................................................................. 20-2

20.3 Self T

20.4 Updating the Firmware ................................................................................................... 20-8

20.5 Mechanical Inspection .................................................................................................. 20-10

20.6 Checking the Operation .................................................................................................20-1

20.7 Replacing the Battery Pack ..........................................................................................

20.8 Replacing the Optical

20.9 Routine Maintenance ................................................................................................... 20-17

20.10 Storage Precautions ..................................................................................................... 20-18

20.11

Recommended Replacement Parts .............................................................................

20.12 Calibration ....................................................................................................................

est .......................................................................................................................... 20-7

Adapter

...................................................................................... 20-15

Chapter 21 Specications

21.1 Models ............................................................................................................................ 21-1

21.2 Optical Section ............................................................................................................... 21-2

21.3 General

21.4 External Dimensions .................................................................................................... 21-10

Specications ................................................................................................... 21-8

20-12

20-19 20-20

xiv

IM 735020-01E

Appendix

Index

App

Contents

Appendix 1 Terminology ........................................................................................................ App-1

Appendix 2 Key Assignments for the USB104 Keyboard ......................................................App-6

Appendix3

Exampleofleinput/output ................................................................................ App-7

Index

IM 735020-01E

OPTICAL INPUT

F 1

F 2

F 3

F 4

F 5

ESC

FILE

SCALE

ENTER

SETUP

REAL TIME

AVG

CHARGE

2 3

5 6

Chapter 1 Names and Functions of Parts

1.1 Front Panel

Names and Functions of Parts

IM 735020-01E

Number Name Function

1 LCD Displays the measured waveforms, measurement conditions, etc. 2 ESC key Cancels an operation or returns to the previous display.

3 FILE key Operate files and print waveforms. Some also used as soft keys.

4 CHARGE lamp Lights (green) while the battery pack is fast charging. Turns OFF when the battery pack is finished fast charging. Blinks (green) if the battery pack cannot be fast charged. 5 POWER switch Turns the instrument on/off 6 POWER lamp Illuminates while the instrument is turned on (green). When the battery level is low (red). 7 AVERAGE key Starts or stop the averaging measurement. 8 REALTIME key Starts or stop the realtime measurement. 9 SETUP key Sets measurement conditions and system configuration.

Also used to change the event detection conditions for event analysis.

Arrow keys Moves, expands, and reduces waveforms, moves cursors,

10 etc.

11 ENTER key Confirms the operation 12 SCALE key Expands, reduces, and moves waveforms. 13 Rotary knob Moves cursors and markers, sets values, etc. 14 MENU key Returns to the initial screen at startup. (Selects OTDR, optical power monitor, light source, and

one-button measurement.) 15 Soft keys Executes functions that are assigned to the soft keys

displayed at the right edge of the LCD.

1-1

1.2 Rear Panel

Number Name Function

1 Stand Tilts the instrument.

Note

• The /PL option does not come with a stand.

• Do not use the stand as a handle to carry the AQ7270/AQ7275.

• Use the stand only to tilt the AQ7270/AQ7275.

• If you are tilting the AQ7270/AQ7275, check that the stand is fixed in place.

1-2

IM 735020-01E

1.3 Side Panel

/PL Option

Top View

Names and Functions of Parts

Number Name Function

1 DC power connector Connects the AC adapter. 2 Optical connector Connects the optical fiber cable. *1 3 USB 1.1 connector (Type A) Connects a USB memory, USB printer, the USB104 keyboard etc. 4 USB 1.1 connector (Type B) 5 Internal printer Prints waveforms and event lists.(/PL option) 6 Printer paper feed button Feeds the paper.(/PL option) 7 Ethernet connector Used for remote control.(/PL option) 8 Battery pack storage Stores the battery pack.

*1 The /PM option supports only PORT1. PORT2 (MMF) and 1650-nm wavelength are not supported.

Used for remote control, storage, etc.

IM 735020-01E

1-3

/PL option

1.3 Side Panel

Right View

Number Name Function

1 Printer cover Stores the paper. 2 Lock lever Fixes the printer cover in place. 3 Shoulder belt bracket Attaches the shoulder belt. 4 Hand belt bracket Attaches the hand belt.

1-4

IM 735020-01E

1.4 Display

Top Menu

Names and Functions of Parts

Number Function

1 Optical pulse measurement (OTDR) screen. 2 Optical power monitor screen (/PM option). 3 Light source screen (/LS /SLS option). 4 Visible Light source screen (/VLS option). 5 Displays the soft key menu. 6 One-button measurement screen. 7 multicore fiber measurement ( 8 Displays the fiber inspection probe screen.

Displays the Multi Core Trace Comparison (main view) screen (firmware versions 3.01

and later).

main view display) screen.

IM 735020-01E

1-5

A shaded area

1.4 Display

Note

Displays a shaded area when the option is not installed (firmware version 3.01 or later).

1-6

IM 735020-01E

1516 17

1.4 Display

Optical Pulse Measurement (OTDR)

Names and Functions of Parts

Number Function

1 Displays the value per scale mark on the vertical axis. 2 Shows the display start level of the vertical axis (top edge of the waveform display area) 3 Waveform display area 4 Displays the value per scale mark on the horizontal axis. 5 Shows the display start distance of the horizontal axis (left edge of the waveform display area) 6 Displays the distance from the measurement reference point of the horizontal axis to the cursor position. 7 Displays the measurement conditions. 8 Displays an explanation of the function 9 Displays the computed result of the measured data. 10 Displays the full screen of the waveform display area. The section displayed in the

waveform display area is indicated with a frame (overview).When adjusting the scale using Zoom or Shift, the color of the frame is different. When you press Shift, the word

“SHIFT” is displayed at the upper right of the overview screen. 11 Displays the sampling resolution. 12

Shows the display end distance of the horizontal axis (right edge of the waveform

display area) 13 Displays the soft key menu. 14 Displays the type of power in use (battery pack or AC adapter) 15 Displays the cursor movement setting. 16 Displays the approximation method. 17 Displays in red the connector in which the optical pulse is output. 18 Displays the progress of the averaging measurement (AVE).Displays a bar graph

indicating the progress in the 19 Label area. The name of the next file to be saved blinks if auto save is turned ON. 20 Displays the operating status of the instrument.

While the optical pulse output is ON: “LASER ON” is indicated and the text ckground

blinks.

While the optical pulse output is OFF: Operation mode (Simple (Full Auto),

measurement Wizard, Detail, or Multi WL) 21 Displays the year, month, day, and time. 22 FILE name area

text background.

IM 735020-01E

1-7

1 2

1.4 Display

Optical Power Monitor(/PM option)

Number Function

1 Displays numerically the optical input power value. 2 Displays a graph of the optical input power value. 3 Measurement condition display area 4 Soft key menu

Light Source(/LS, /SLS option)

1-8

Number Function

1 Displays the wavelength value. 2 Measurement condition display area 3 Soft key menu

IM 735020-01E

1.4 Display

Visible Light source (/VLS option)

Number Function

1 Displays the wavelength value. 2 Soft key menu

Names and Functions of Parts

One-Button Measurement

Number Function

1 Displays the contents of the macro that is being defined (used to enter the macro while viewing the contents). 2 Soft key menu

IM 735020-01E

1-9

1.4 Display

Fiber Inspection Probe

Number Function

1 Displays the fiber inspection probe screen. 2 Soft key menu

Multi Core Trace Comparison (Firmware Versions 3.01 and Later)

Number Function

1 Displays the number of the core of the optical fiber cable under measurement. 2 Displays the soft key menu. 3 Displays the information of the cell that the cursor is at. 4 Displays the waveform before work and the waveform after work at the same time.

1-10

IM 735020-01E

Telephone pole

Closure

Optical fiber cable

Telephone exchanges

Measurement in cable installations

AQ7270/AQ7275 OTDR

Consumer

Corporate user

Chapter 2

Measurement Overview

2.1 Measurement Configuration

Overview of the AQ7270/AQ7275

The AQ7270/AQ7275 is an optical time domain reflectometer that measures optical fiber lengths and losses and identifies failure locations. It is mainly used in the optical fiber installation and maintenance servicing of access networks (communications links between telephone exchanges and telephone poles) and user networks (communications links between user sites and telephone poles). The light source and optical power monitor functions can also be used as options.

Measurement Overview

Analysis Using the Emulation Software

The waveform data that is measured by the AQ7270/AQ7275 can be analyzed on your PC using the AQ7932 OTDR emulation software (version 3.0 or later). The software comes with a report creation wizard that is convenient in creating construction reports.

Precautions for Measurement

When Measuring with the Same Wavelength as the Communication Light

When Measuring with a Wavelength Different from Communication Light (1625/1650 nm)

When there is communication light in the fiber under test, use a wavelength different from the communication light for measurement.

IM 735020-01E

The instrument is designed to allow measurement that impacts communication as little as possible in such cases, but be sure to install a cutoff filter of 1625 nm or 1650 nm in system under test. If measurements are taken without a cutoff filter installed, communications can be affected and measurements may not be correct. Always check the configuration of the system under test before use (presence or absence of an appropriate cutoff filter, attenuation characteristics, etc.).

2-1

Ethernet connector (remote control)

USB connector (remote control and storage)

USB printer

USB connector

USB memory

DUT

Optical connector PORT2 (wavelength *1: 650 nm, 850 nm, 1300 nm, and 1650 nm)

Optical connector PORT1 (wavelength *2: 1310 nm, 1490 nm, 1550 nm, and 1625 nm)

DUT

AC adapter

The 735021 and 735031 output 1650 nm from PORT1. The 735029 outputs 850 nm and 1300 nm from PORT1. The /PM option supports only PORT1. PORT2 (MMF) and 1650-nm wavelength are not supported.

USB104 keyboard

The 735036 outputs 1650 nm from PORT2.

2.1 Measurement Configuration

Configuration of Peripheral Devices

2-2

IM 735020-01E

Optical Pulse Measurement (OTDR) Configuration

Reflection point

Battery pack

Optical fiber cable under measurement

Optical pulse output

Return ray due to reflection

* Do not bend the optical fiber cable.

[PORT1][PORT2]

Install the battery pack and connect the optical fiber cable under measurement.

There are two optical connectors on the top panel of the AQ7270/AQ7275.Because the connector that delivers the optical pulse is fixed depending on the wavelength, connect the cable to the appropriate connector according to the condition of the optical fiber cable to be measured. You can view the indicator shown on the display (see page 1-5) to choose the appropriate connector.

2.1 Measurement Configuration

Measurement Overview

This also applies when using the optional optical power monitor or light source function.

Note

• The 735021 outputs 1650 nm from PORT1.

• The 735029 outputs 850 nm and 1300 nm from PORT1.

• The /PM option supports only PORT1. PORT2 (MMF) and 1650-nm wavelength are not supported.

When Using the Angled PC SC Connector (Suffix Code:-ASC)

• Use the same type of angled PC SC connector for the connected optical fiber cable as well.

The ferrule end of the angled PC SC connector is polished to If other types of connectors are used, the end face of the connector may become

damaged.

• You can replace the

an angle.

AQ7270/AQ7275 connector, but only with an SC type.

IM 735020-01E

2-3

+ 298 hidden pages

Yokogawa AQ7270 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Checking the Contents of the Package

Safety Precautions

Waste Electrical and Electronic Equipment

Symbols and Notation Used in This Manual

Contents

Chapter 1 Names and Functions of Parts

1.1 Front Panel

1.2 Rear Panel

1.3 Side Panel

1.4 Display

2.1 Measurement Configuration