YOKOGAWA AQ7260 OTDR User manual

User’s
Manual
Yokogawa Electric Corporation
AQ7260 OTDR
IM 813920300-01E
2nd Edition

PREFACE
I
Preface
Thank you for purchasing the AQ7260. The AQ7260 is a compact optical time domain
reflectometer with various functions and is designed to measure loss and detect faults in
optical fibers.
This user's manual refers to AQ7260 OTDR which software version is 2.00 or later.
Before using the AQ7260 (hereafter referred to as the instrument), please read this
manual thoroughly. In particular, the “Safety Precautions” given at the beginning of this
manual should be read to gain a full understanding of the instrument.
After reading, please keep this manual in a safe place so that it can be referred to anytime
it is required.
This user's manual refers to AQ7260 OTDR which software version is 2.00 or later.
Procedure of checking software version, refer to page 10-4.
yThe instrument uses Linux and Microwindows.
Linux is a trademark or a registered trademark of Linus Torvalds in U.S.A. and
other countries.
yThis product includes open source software. For the procedure of obtaining the source
code, contact your nearest YOKOGAWA dealer.
•Copying or reproduction of all or any part of the contents of this manual without
permission is strictly prohibited.
•The contents of this manual are subject to change without prior notice.
•Every effort has been made in the preparation of this manual. However, should
you find any errors or lack of descriptions, please contact the agent from whom the
instrument was purchased.
•This instrument falls under the category of goods (or technology) restricted by the
Foreign Exchange and Foreign Trade Law. Thus, in accordance with this law and
before exporting this instrument permission must be obtained from the government
of Japan.
TIP
Caution
Refer

WARRANTY
II
Warranty
•The warranty period is one year from the date of purchase.
•Should breakdown occur during the warranty period, repairs shall be made free of
charge according to the warranty policy.
•Breakdown arising from operating mistakes or modifications performed by the user
or breakdown/damage caused by natural disasters shall be exempt from this
warranty policy, even if it occurs during the warranty period.
•A certificate of compliance to guarantee the designed quality accompanies
YOKOGAWA products.
Prior to shipment, every YOKOGAWA product undergoes strict inspections that are
carried out according to its quality assurance system. However, should breakdown
occur arising from defects in manufacturing or accidents during transport, please
contact the agent from whom the product was purchased.
yRecommended recalibration period is 1 year. Inquiry of about recalibration,
please contact the agent from whom the instrument was purchased.
yThe following parts are consumable parts and are not subject to the warranty
period.

*1: Each life span depends on the environmental conditions and frequency of use.
TIP
product name Part name Life span *1
Liquid Crystal Display (LCD) panel 3 years
Battery pack 1 year
Main Frame Back up battery 5 years
Optical Module Ferrule on the connector 1 year
Printer
Equivalent to 3,000 roll of printer paper.
Expansion
unit FDD 3 years

CONVENTIONS USED IN THIS MANUAL
III
ConventionsUsedinthisManual
Safety Graphic Marks
The following graphic marks are given in this manual to ensure the safe use of this
instrument and to prevent injury and property damage. Before operating the instrument,
please read the following carefully to gain thorough understanding.
The following graphic marks indicate the degree of danger and damage that may
occur as a result of improper handling.
WARNING
Indicates a potentially hazardous situation that may possibly result in death or serious injury in the event of
improper handling.
CAUTION
Indicates a potentially hazardous situation that may result in moderate injury or property damage in the
event of improper handling.
The degree of danger and damage is indicated by the following graphic symbols.
“U” indicates a warning or caution.
This example indicates fire warning.
“{” indicates a prohibited operation.
This example indicates that disassembly is prohibited.
“z” indicates an obligatory operation.
This example indicates that the AC adapter must be removed from the power outlet.

CONVENTIONS USED IN THIS MANUAL
IV
Other Graphic Marks
This is called a caution mark. It indicates an operation or procedure that requires
special care or a point to be observed regarding handling of the instrument.
This is called a TIP mark. It indicates information that is useful for operation of the
instrument.
This is called a reference mark. It indicates the reference page for the contents or
terms used in this manual.

The following symbols are used on this instrument.
Caution
TIP
Refer
Direct current.
Alternating current.
Danger, Caution
Danger, risk of electronic shock.
Equipment protected throughout by DOUBLE INSULATION
or REINFORCED INSULATION

SAFETY PRECAUTIONS
V
SafetyPrecautions
This section must be read to ensure safe use of the instrument. After reading, keep this
manual in a safe place so that it can be referred to anytime it is required.
For Safe Use of Laser Products
This instrument uses a laser light source and as such, falls into the category of “class 1M
laser product” specified by “EN60825-1:1994 +A2:2001 Safety of Laser Products-Part 1:
Equipment Classification, Requirements and User’s Guide”.
And the laser products comply with 21CFR1040.10 except for deviations pursuant to Laser
Notice No.50, dated May 27 2001.
Optical module AQ7261 AQ7264
Laser type FP-LaserInGaAsP FP-LaserInGaAsP
Laser class 1M 1M
Center wavelength 1310nm, 1550nm 1310nm, 1550nm
CW --------------------- ≤1mW@1310nm, 1550nmOutput
power PULSE ≤100mW@1310nm, 1550nm ≤100mW@1310nm, 1550nm
PULSE
WIDTH
≤20µs@1310nm(duty:≤1.6%)
≤20µs@1550nm(duty:≤1.6%)
≤20µs@1310nm(duty:≤1.6%)
≤20µs@1550nm(duty:≤1.6%)
50µs@1550nm(duty:≤0.8%)
Optical module AQ7265
Laser type FP-LaserInGaAsP
Laser class 1M
Center wavelength 1310nm, 1550nm
CW ≤1mW@1310nm, 1550nmOutput
power PULSE ≤100mW@1310nm, 1550nm
PULSE
WIDTH
≤20µs@1310nm(duty:≤1.6%)
≤20µs@1550nm(duty:≤1.6%)
50µs@1550nm(duty:≤0.8%)
INVISIBLE LASER RADIATION
DO NOT VIEW DIRECTLY WITH OPTICAL INSTRUMENTS
CLASS 1M LASER PRODUCT

SAFETY PRECAUTIONS
VI
WARNING
Invisible laser beam is output from the emitter section. The emitter section is located on the
top panel.
A message “LASER ON” is displayed while a laser beam is emitted.
Class 1M laser invisible radiation when LASER ON.*1
Viewing the laser output with certain optical instruments (for example, eye loupes,
magnifiers and microscopes) within a distance of 100mm may pose eye hazard.
*1: When measuring or Light source function ON
These laser beams cannot be seen by the human eye. Should the beams enter the eyes,
they may be seriously damaged, resulting in excessive deterioration of eyesight. To
prevent such accidents, the following points must be strictly observed.
•Never emit laser beam if no optical fiber is connected to the emitter section.
•When disconnecting the optical fiber from the emitter section, stop emission first.
•While laser beam is output, never stare into the emitter section nor the end of the
optical fiber that is connected to the emitter section.
Do not disassemble or modify the instrument, since high-power laser beams may be output
when doing so.
If repair is necessary due to breakdown, contact the agent from whom the instrument was
purchased. Repair is allowed by qualified personnel only.

SAFETY PRECAUTIONS
VII
Notes on Power Supply
The instrument can be powered by the following two methods.
•AC adapter (supplied with the instrument)
•Battery pack (Model name : 3UR18650F-2)
For details on use of power supply, refer to page 3-3.
Before connecting the instrument to the power, read the safety precautions given below.
AC adapter
CAUTION
Do not connect or disconnect the power cord while the instrument is powered ON.
Doing so may result in breakdown.
Refer

SAFETY PRECAUTIONS
VIII
Battery Pack
WARNING
If the battery fluid leaks from the battery pack and enters the eyes, immediately wash with
clean water, such as tap water, (never rub the eyes) and consult a doctor. Failure to do so
may cause damage to the eyes.
The instrument and battery pack must be kept out of the reach of children.
If the battery fluid leaks and adheres to skin or clothes, immediately wash with clean water,
such as tap water. Adhesion to the skin may produce irritation.

SAFETY PRECAUTIONS
IX
CAUTION
Do not disassemble or modify the battery pack. The battery pack has built-in safety and
protective functions designed to prevent danger. If these functions are damaged, the
battery fluid may leak from the battery pack, resulting in heat generation, smoke, explosion
or fire.
Do not connect the “+” and “−” terminals of the battery pack with metal objects like a wire.
In addition, do not carry the battery pack or store it near metal necklaces or hairpins. Doing
so may short-circuit the battery pack. This may cause excessive current flow, resulting in
leakage, heat generation, smoke, explosion or fire, or may cause the metal objects,
necklaces or hairpins to generate heat.
Do not put the battery pack into a fire or heat it. Doing so may melt insulating materials,
damage the protective circuit, or cause the battery fluid to catch fire, resulting in leakage,
heat generation, smoke, explosion or fire.
Do not use or leave the battery pack near a fire or hot objects such as stoves. Doing so
may cause short-circuit in the battery pack, resulting in battery fluid leakage, heat
generation, smoke, explosion or fire.
Do not put the battery pack under any water, including seawater, or let it get wet. If the
built-in protective circuit is damaged, the battery pack will be charged with abnormal current
or voltage. This may cause a chemical reaction inside the battery pack, resulting in battery
fluid leakage, heat generation, smoke, explosion or fire.
Do not charge the battery pack near a fire or under very hot sunshine. If it gets hot, the
protective device will initiate to prevent danger, hindering charging, or it gets damaged
causing charging with abnormal current or voltage. Such charging may cause a chemical
reaction inside the battery pack, resulting in battery fluid leakage, heat generation, smoke,
explosion or fire.
Charging of the battery pack must be performed on this instrument under the specified
charging conditions. If charging is performed in an environment that does not conform to
the specified charging conditions (e.g. at excessively high temperatures, with higher
voltage/current than the specified, using a modified charger), the battery pack may be
excessively charged, or charged with abnormal current. Such charging may cause an
abnormal chemical reaction inside the battery pack, resulting in battery fluid leakage, heat
generation, smoke, explosion or fire.
Do not pierce the battery pack with a nail, hit it with a hammer, or stamp on it. Doing so
may damage or deform the battery pack. This may cause short-circuit inside the battery
pack, resulting in battery fluid leakage, heat generation, smoke, explosion or fire.
Do not cause any excessive impact to the battery pack or throw it. Doing so may result in
battery fluid leakage, heat generation, smoke, explosion or fire.
Furthermore, if the built-in protective circuit is damaged, the battery pack will be charged
with abnormal current or voltage. This may cause an abnormal chemical reaction inside the
battery pack, resulting in battery fluid leakage, heat generation, smoke, explosion or fire.
Do not solder directly on the battery pack. Doing so may melt insulating materials, damage
the protective circuit, resulting in battery fluid leakage, heat generation, smoke, explosion
or fire.
Do not use the battery pack if it shows excessive damage or deformation. Using it in such
condition may result in battery fluid leakage, heat generation, smoke, explosion or fire.

SAFETY PRECAUTIONS
X
CAUTION
The battery pack must only be used for this instrument.
If charging is not complete even if the specified charging time has elapsed, stop charging.
Continuing to charge the battery pack may result in battery fluid leakage, heat generation,
smoke, explosion or fire.
Do not put the battery pack in a microwave oven or high-pressure container. The battery
pack may be heated rapidly or may no longer be airtight, resulting in battery fluid leakage,
heat generation, smoke, explosion or fire.
If battery fluid leakage or an odd smell is detected, immediately take the battery pack away
from the heat source. Leaving it in such condition may cause the battery fluid to catch fire,
resulting in smoke, explosion or fire.
If odd smells, heat generation, discoloration or deformation are noticed during use,
charging or storage of the battery pack, disconnect it from the instrument or charger, and
do not use it. Continuing to use it in such conditions may result in battery fluid leakage,
heat generation, smoke, explosion or fire.
Do not use or leave the battery pack in strong direct sunlight or in places like inside an
automobile under very strong sunshine. Doing so may result in battery fluid leakage, heat
generation or smoke. It also may deteriorate the performance or life of the battery pack.
The battery pack has a built-in protective circuit designed to prevent danger. So, do not use
the battery pack in places where static electricity that is likely to damage the protective
device is generated. Using the battery pack in such places may damage the protective
device, resulting in battery fluid leakage, heat generation, smoke, explosion or fire.
The battery pack can be charged in the following temperature range. Charging the battery
pack outside this range may cause battery fluid leakage, heat generation or breakdown. It
may also deteriorate the performance or life of the battery pack. Allowed charging
temperature range: 5°C to 30°C
If rust, odd smells, heat generation or any other abnormality are found when using the
instrument for the first time following purchase, stop its use and contact the agent from
whom the instrument was purchased.

SAFETY PRECAUTIONS
XI
Notes on Operating Environment and Conditions
Restrictions Regarding Operating Environment
WARNING
Take care not to let water enter the instrument or to allow it to get wet.
Failure to observe this may result in fire, electric shock or breakdown.
Restrictions Regarding Operating Conditions
WARNING
The power cord specified by YOKOGAWA must be used.
Use of any other power cord may result in fire, electric shock or accident.

SAFETY PRECAUTIONS
XII
Notes on Installation
For Personnel Performing Installation
WARNING
Do not connect the instrument to an AC outlet using an extension power cord.
Doing so may result in heat generation or fire.
CAUTION
Do not dissemble or modify the instrument.
Doing so may result in electric shock, fire or accident.
Do not expose the instrument to water splashes.
Failure to observe this may result in electric shock, fire or accident.
Do not allow the terminals to short-circuit.
Failure to observe this may result in fire or breakdown.
When using an AC adapter, make sure that it is inserted into the AC outlet properly.
If the power plug comes into contact with metal objects, fire or electric shock may result.
When carrying out work with the instrument on your shoulders, take care not to let it drop.
Failure to observe this may result in injury or breakdown.

SAFETY PRECAUTIONS
XIII
Restricted and Prohibited Items Regarding Operating Environment and
Conditions
WARNING
Do not insert metal bars or such like into gaps on the instrument.
Doing so may result in fire, electric shock or accident.
CAUTION
Keep the power cord away from heaters etc.
Failure to observe this may result in electric shock.
Do not connect or disconnect the power plug with wet hands.
Doing so may result in electric shock.
Do not place the instrument in humid or dusty areas.
Doing so may result in electric shock or breakdown.
Do not place the instrument on an unstable surface like a shaky table or slope.
The instrument may drop or turn over, causing injury.
Do not place the instrument in areas where there is excessive vibration or impact.
The instrument may drop or turn over, causing injury.
When disconnecting the power cord, always hold the plug and pull it out.
Pulling the power cord may damage the cord, resulting in fire or electric shock.
Do not place the instrument in direct sunlight or in places like inside a car under the very
hot sunshine.
Placing the instrument in such places may cause the temperature inside the instrument to
rise, resulting in breakdown.

SAFETY PRECAUTIONS
XIV
Prohibited Items Regarding Installation Method
WARNING
Do not place heavy objects on the power cord, heat or pull it, and do not modify the power
cord.
Doing so may damage the cord, resulting in fire or electric shock.
CAUTION
Before transferring the instrument to another site, make sure that the power plug is
removed from the AC outlet and all the external connecting cables are disconnected.
Failure to observe this may damage the cord, resulting in fire or electric shock.
Notes on Handling
The instrument must be handled according to the procedures given in this manual.
Warning marks (“WARNING”, “CAUTION”) must be strictly observed.
WARNING
Do not leave metal objects or containers of liquid, such as water, near the instrument.
Strong wind may turn over the container spilling the water or cause metal objects to hit the
instrument, resulting in fire, electric shock or breakdown.
Do not modify the power cord, bend, twist or pull it excessively.
Failure to observe this may result in fire or electric shock.
Before plugging in or removing connectors from the instrument, make sure that the
instrument is powered OFF.
Failure to observe this may result in fire, electric shock or breakdown.
Do not disassemble or modify the instrument.
Doing so may result in fire, electric shock or accident.
Do not allow the terminals of the battery pack to get wet.
Failure to observe this may result in rust, fire or electric shock.

SAFETY PRECAUTIONS
XV
CAUTION
When closing panels and covers, take care not to trap your fingers.
If you are not going to use the instrument for a long period of time, the power plug must be
removed from the AC outlet for safety reasons. It must also be removed in the event of
thunderstorms.
Failure to observe this may result in fire, electric shock or breakdown.
Do not use the instrument at -10°C or lower temperatures.
Operation of the indicators cannot be guaranteed.
Do not allow short-circuiting of the battery pack’s terminals with metal objects.
Failure to observe this may result in fire or breakdown.
If this instrument is used in a manner not specified in this manual, the protection
provided by this instrument may be impaired.
Notes on Maintenance and Inspection
Periodic maintenance and inspection of the instrument are recommended. For enquiries
regarding maintenance and inspection, contact the agent from whom the instrument was
purchased.
CAUTION
Take care not to let dust or dirt collect inside the instrument.
Collection of dust or dirt inside the instrument may result in fire or breakdown.
Caution

SAFETY PRECAUTIONS
XVI
Actions to be Taken in Case of Abnormalities
WARNING
Do not repair the instrument even though the instrument becomes faulty.
Doing so may result in electric shock or injury. In addition, the instrument repaired by the
user without permission will be exempt from the warranty.
Should the instrument be dropped or damaged, turn OFF the power switch on the
instrument, disconnect the power plug from the AC outlet and then contact your agent from
whom the instrument was purchased.
Continuing to use it may result in fire, electric shock or breakdown.
Should foreign items enter the instrument, turn OFF the power switch on the instrument,
disconnect the power plug from the AC outlet and then contact your agent from whom the
instrument was purchased.
Continuing to use it may result in fire, electric shock or breakdown.
Should smoke or odd smells be detected, turn OFF the power switch on the instrument,
disconnect the power plug from the AC outlet and then contact your agent from whom the
instrument was purchased.
Failure to observe this may result in fire, electric shock or breakdown.
If the power cord is damaged, contact the agent for replacement.
Continuing to use it may result in fire or electric shock.
Notes on Disposal
WARNING
When disposing of the instrument, do not put it into a fire.
Doing so may cause explosion, resulting in fire or burns.
CAUTION
The instrument uses a lithium battery for memory backup and a gallium arsenide battery
for the light source module. In addition, the liquid crystal display panel contains fluorescent
tubes.
So, disposal of the instrument must be carried out according to the laws and regulations of
the country and local authorities.

SAFETY PRECAUTIONS
XVII
Other Precautions
Notes on Backup Battery
CAUTION
The instrument uses a lithium battery for memory backup. The instrument may malfunction
suddenly due to battery life, therefore, early replacement of the battery is recommended.
The life of the battery is approximately five years.
For details on replacement of the backup battery, refer to page 1-25.
Notes on LCD Panel
CAUTION
This instrument uses a liquid crystal display panel. The display panel gradually becomes
unclear due to the backlight life. The LCD panel needs to be replaced when it becomes
unclear.
The life of the LCD panel is approximately three years.
Please contact the agent when the panel is no longer clear.
Refer

CONTENTS
XVIII
StructureofthisManual
Chapter 1 BEFORE USING THE INSTRUMENT
Explains the names and functions of each part of the instrument, and how to carry out
daily maintenance.
Chapter 2 BEFORE STARTING MEASUREMENT
Explains how to set up the instrument.
Chapter 3 PERFORMING MEASUREMENTS
Explains how to set measurement conditions and how to measure optical fiber cables.
Chapter 4 ENTERING CHARACTERS
Explains how to enter label and file names.
Chapter 5 EDITING AUTOMATIC SEARCH RESULTS
The instrument has a function that detects events in the measurement results
automatically at the end of measurement. This chapter explains how to edit the detection
results.
Chapter 6 FILE OPERATION
Explains how to use (e.g. open, delete) files saved to a storage medium.
Chapter 7 USING USEFUL FUNCTIONS
This instrument has various useful functions. This chapter explains these functions.
Chapter 8 USING OPTIONS AND EXTERNAL DEVICES
Explains how to use options and external devices (e.g. USB printer) and how to control the
instrument from a personal computer.
Chapter 9 SPECIFICATIONS
Explains the specification of the instrument itself, optical module and options.
Chapter 10 APPENDIX
Explains corrective actions to be carried out in case of breakdown. Also provides a list of
technical terms regarding the instrument.

CONTENTS
XIX
Contents
Preface..................................................................................................... I
Warranty ................................................................................................. II
Conventions Used in this Manual ....................................................... III
Safety Graphic Marks .............................................................................................................III
Other Graphic Marks .............................................................................................................IV
Safety Precautions ................................................................................V
For Safe Use of Laser Products ............................................................................................. V
Notes on Power Supply ........................................................................................................ VII
Notes on Operating Environment and Conditions.................................................................. XI
Notes on Installation ............................................................................................................. XII
Other Precautions...............................................................................................................XVII
Structure of this Manual...................................................................XVIII
Chapter 1 BEFORE USING THE INSTRUMENT............................................................XVIII
Chapter 2 BEFORE STARTING MEASUREMENT .........................................................XVIII
Chapter 3 PERFORMING MEASUREMENTS................................................................XVIII
Chapter 4 ENTERING CHARACTERS ...........................................................................XVIII
Chapter 5 EDITING AUTOMATIC SEARCH RESULTS ..................................................XVIII
Chapter 6 FILE OPERATION..........................................................................................XVIII
Chapter 7 USING USEFUL FUNCTIONS .......................................................................XVIII
Chapter 8 USING OPTIONS AND EXTERNAL DEVICES ..............................................XVIII
Chapter 9 SPECIFICATIONS..........................................................................................XVIII
Chapter 10 APPENDIX ...................................................................................................XVIII
Contents ..............................................................................................XIX
Chapter 1 BEFORE USING THE INSTRUMENT .............................. 1-1
1.1 What is the AQ7260? .................................................................................1-2
1.2 Installation, Storage and Transport..........................................................1-3
Unpacking and Receiving Inspection................................................................................... 1-3
Notes on Storage................................................................................................................. 1-4
Notes on Transport ..............................................................................................................1-5
1.3 Power Supply.............................................................................................1-7