YOKOGAWA AQ7277 User manual

User’s
Manual
IM AQ7277-03EN 1/9
3rd Edition
3rd Edition : October 2017 (YMI)
All Rights Reserved, Copyright © 2011 Yokogawa Test & Measurement Corporation
Printed in Japan
Model AQ7277 Remote OTDR
Thank you for purchasing the AQ7277 Remote OTDR.
This product is an OTDR module, designed to be integrated into a remote fiber test system.
This user’s manual explains the handling precautions, specifications, and connection procedures of theAQ7277
Remote OTDR for users that are involved in remote fiber test.
For correct operation, please read this manual thoroughly before use.
The AQ7277 comes with the following manuals. Please keep them in a safe place.
Manual Title Manual No. Description
AQ7277 Remote OTDR User’s Manual IM AQ7277-03EN This manual.
AQ7277 Remote OTDR User’s Manual IM AQ7277-92Z1 A manual for China.
* The “-EN” in the manual number is the language code.
Contact information of Yokogawa offices worldwide is provided on the following sheet.
Document No. Description
PIM 113-01Z2 List of worldwide contacts
The following manual is a related manual that is downloaded with the Remote Controller for the AQ7277
Remote OTDR available at the YOKOGAWA website.
Manual Title Manual No. Description
Remote Controller for the AQ7277
Remote OTDR Configuring Network
Settings and Updating the Firmware
IM AQ7277-61EN This manual explains how to use the remote
controller for configuring the AQ7277.
AQ7277 OTDR Communication Interface
User's Manual IM AQ7277-17EN Explains the features related to using communication commands to control the AQ7277..
You can download the Remote Controller for the AQ7277 Remote OTDR and the manual from the following
webpage.
https://y-link.yokogawa.com/YL007/
Trademarks
• Microsoft,Windows,andWindowsVistaareeitherregisteredtrademarksortrademarksofMicrosoft
Corporation in the United States and/or other countries.
• AdobeandAcrobatareeitherregisteredtrademarksortrademarksofAdobeSystemsIncorporatedinthe
United States and/or other countries.
• Inthismanual,the® and TM symbols do not accompany their respective registered trademark or trademark
names.
• Othercompanyandproductnamesareregisteredtrademarksortrademarksoftheirrespectiveholders.
Revisions
• 1stEdition: April2015
• 2ndEdition: November2015
• 3rd Edition: October 2017

2/9 IM AQ7277-03EN
Checking the Package Contents
AQ7277
Check that the product that you received is what you ordered by referring to the model name and suffix code
given on the name plate affixed to the product.
1.65
DC IN 12-19.5V
+
-xxx-xxxx
Model Suffix Code Description
AQ7277 Remote OTDR
Suffix code -B01 1650nmwavelength,SC
-B02 1650nmwavelength,SC/Angled-PC
No. (Instrument number)
When contacting the dealer from which you purchased the instrument, please tell them the instrument number.
Standard Accessories
The instrument is shipped with the following accessories. Make sure that all accessories are present and
undamaged.
Name Model or Part No. Quantity Specifications and Notes
User’s manual IM AQ7277-03EN 1 This manual
IM AQ7277-92Z1 1 Amanual for China
Inquiries PIM113-01Z2 1 List of worldwide contacts
Remote Controller for the AQ7277 Remote OTDR
A free software for configuring the Remote OTDR.
You can download the Remote Controller for the AQ7277 Remote OTDR from the following webpage.
https://y-link.yokogawa.com/YL007/
Safety Precautions
The general safety precautions described herein must be observed during all phases of operation. If the
instrument is used in a manner not specified in this manual, the protection provided by the instrument may be
impaired. YOKOGAWA assumes no liability for the customer’s failure to comply with these requirements.
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.
Failure to comply with the precautions below could lead to injury or death.
WARNING
Use the Instrument Only for Its Intended Purpose
This optical measuring instrument with light source is designed to measure the optical
characteristics of light sources and evaluate their performance. Do not use this instrument for
anything other than as an optical measuring instrument.
Check the Physical Appearance
Do not use the instrument if there is a problem with its physical appearance.
Use the Correct Power Supply
Make sure that the power supply voltage matches the AQ7277’s rated supply voltage and that it
does not exceed the maximum voltage range specified for the power cord.

3/9IM AQ7277-03EN
Check the Power Supply Capacity
Make sure that the power supply capacity sufficiently meets theAQ7277’s maximum power
consumption (or current capacity) before you connect the power cord.
Do Not Look at the Laser Beam
Do not look directly or indirectly into the laser beam or at a specular reflection of the beam without
protective equipment. The laser beam may cause blindness or damage to your eyes.
Do Not Operate in an Environment with Flammable or Explosive Gasses, Steam, or Dust
Do not operate the instrument in an environment with flammable or explosive gases, steam, or
dust (dangerous places). Operation in such an environment constitutes a safety hazard.
Do Not Remove the Case or Disassemble or Alter the Instrument
Only qualified YOKOGAWA personnel may remove the case and disassemble or alter the
instrument.
Remove Connections When Carrying or Moving the Instrument
When carrying or moving the instrument, remove all cords (including the power cord) and cables.
CAUTION
When Using the Same Wavelength That Is Used in Real Communication to Make
Measurements
If communication light is present in the optical fiber that you want to measure, the communication
may be affected. Take appropriate precautions to avoid communication interference.
In addition, to make accurate measurements with the AQ7277, take the measurement environment
(such as the presence of communication light) into consideration.
When Using a Wavelength (1625/1650 mm) Different from That Used in Real Communication
to Make Measurements
When there is communication light in the fiber under measurement, use a light beam with a
different wavelength to make measurements.
If the device connected to the system under measurement does not have a filter for blocking
1625nmand1650nmlaserbeamsordependingonthelightfastnesspowerratingorthe
attenuation characteristics of the blocking filter, the light pulses that the AQ7277 emits may
damage the device. Be sure to install an appropriate blocking filter and check that the device’s
ratings are adequate before making measurements.
When Using SC Angled Physical Contact Connectors
When the AQ7277 has SC angled physical contact connectors, connect optical fibers that have
the same type of connectors.
The SC angled physical contact connector’s ferrule tip is angle-polished. Using a different type of
connector may damage the connector end face.
CAUTION
Operating Environment Limitations
This product is a Class A (for industrial environment) product. Operation of this product in a
residential area may cause radio interference in which case the user is required to correct the
interference.

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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—Part1: Equipment Classification, Requirements and User’s Guide (this instrument
complieswith21CFR1040.10exceptfordeviationspursuanttoLaserNoticeNo.50,datedJune24,2007).
Laser Class 1M Label
Using an optical instrument, such as a loupe, magnifying glass,
or microscope, when observing the laser beam from a distance
of less than 100 mm may cause eye injury.
Laser Specifications
Model Wavelength Output Pulse Width
AQ7277-B01, -B02 1650nm ≤32mW ≤20us(duty:≤3.0%)
Authorized Representative in the EEA
YokogawaEuropeB.V.isAuthorizedRepresentativeofYokogawaTest&MeasurementCorporationintheEEA
forthisProduct.TocontactYokogawaEuropeB.V.,seetheseparatelistofworldwidecontacts,PIM113-01Z2.
Conventions Used in This Manual
The notes and cautions in this manual are categorized using the following symbols.
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 user’s 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 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.
CAUTION Calls attention to actions or conditions that could cause light injury to the user or damage
to the instrument or user’s data, and precautions that can be taken to prevent such
occurrences.

5/9IM AQ7277-03EN
Specifications
Interface Item Specification
External control I/F USB port TYPE B×1
LAN port Ethernet (10BASE-T/100BASE-TX)
External I/F DC power supply input port For+12VDCsupplyHEC3900-010-110(orequivalent)
For+12VDCsupplyMDF6-4DP3.5DS(orequivalent)
LED connector For driving LEDs (power supply, light emission, alarm)
OTDR Features
Item Specification
Wavelength (nm) 1650±5(atthe-20dBpointfromthepulseoutputpeak)
1650±10(atthe-60dBpointfromthepulseoutputpeak)
Pulse light output +15dBmorless
Event dead zone11.2 m
Attenuation dead zone212 m (typ)
Dynamic range330 dB
Distance range 500m,1km,2km,5km,10km,20km,50km,100km,200km,300km,400km
Pulse width43ns,10ns,20ns,50ns,100ns,200ns,500ns,1μs,2μs,4μs,5μs,10μs,20μs
Distance measurement accuracy ±1m+measureddistance×2×10–5±thesamplingresolution
Loss measurement accuracy ±0.05dB
Sampling resolution 5cm,10cm,20cm,50cm,1m,2m,4m,8m,16m,32m
Reading resolution Horizontalaxis:1cmmin.Verticalaxis:0.001dBmin.
Sample data points 100,000 points max.
Index of reflection 1.30000 to 1.79999 (in 0.00001 steps)
Distance unit km
Measurement functions Distance, loss, return loss
Compliant fiber SM(ITU-TG.652)
Optical connector SC (fixed type) (-B01), SC/Angled-PC (fixed type) (-B02)
Laser class 1M
1 Atthe–1.5dBpointfromtheunsaturatedpeakvaluewiththepulsewidthat3nsandreturnlossgreaterthanorequalto
45dB
2 Atthepointwherethebackscatteringlightleveliswithin±0.5ofthesteady-statevaluewiththepulsewidthat10nsand
returnlossgreaterthanorequalto45dB
3 SNR=1,20μspulsewidth,200kmdistancerange,8msamplingresolution,3minutemeasurementtime
4 The range depends on the distance range.
At23°C±2°Cunlessotherwisespecified.
General Specifications
Item Specification
Operating
environment Ambient temperature 0to50°C
Ambient humidity 20to85%RH(nocondensation)
Elevation 2000 m or less
Storage
environment Ambient temperature –20 to 60 °C
Ambient humidity 20to85%RH(nocondensation)
Elevation 3000 m or less
DC power supply Rated supply voltage 12VDCto19.5VDC1.5Aorlessat12DCV,1Aorlessfor19.5VDC
Permitted supply
voltage range 10.8VDCto20.0VDC
Warm-up time At least 30 minutes
Dimensions and
weight Dimensions (W × H × D) 277 mm (W) × 73 mm (H) × 190 mm (D), excluding protrusions
Weight Approx. 2 kg
EMC standards EN61326-1 Class A
EN55011ClassA,Group1
EMCRegulatoryArrangementinAustraliaandNewZealandEN55011ClassA,Group1
Environmental Standard EN50581monitoringandcontrolInstruments

6/9 IM AQ7277-03EN
External Dimensions
1.65
ETHERNET LED IF DC IN
Power
supply
port
USB port
Ethernet port
Optical
connector
6-M3
260
15
137.5
15
236
139
45
175
11.65
41.4
10.4
15.9
98.9
54.75
53.25
138.9
51.9
Power supply port
73
190
277
Unit: mm
Unless otherwise specified, tolerances are ±3% (however,
tolerances are ±0.3 mm when below 10 mm).
12-19.5V
DC IN 12-19.5V
+
-
Component Names and Functions
Power supply ports
Use the appropriate port
for your power supply.
USB port (type B)
1.65
Optical connector
M3 screws (six locations)
ETHERNET LED IF
Ethernet port
LED connector
DC IN
12-19.5V
DC IN 12-19.5V
+
-
Ventilation holes

7/9IM AQ7277-03EN
Installation
WARNING
• Thisinstrumentisdesignedtobeusedindoors.Donotinstalloruseitoutdoors.
• Installtheinstrumentsothatyoucanimmediatelyremovethepowercordifanabnormalor
dangerous condition occurs.
CAUTION
Do not block the ventilation holes.
If you block the ventilation holes on the front and rear panels of the AQ7277, the AQ7277 will
become hot and may break down.
FixtheAQ7277inplaceusingthesixM3screws(screwtighteningtorque:0.6to0.7N•m).
Adjust each screw so that the portion of the screw that is inserted into the AQ7277 case is 3 mm to 6 mm in
length.
AQ7277 case
M3 screws
3 to 6 mm
Installation
surface
Do Not Install the Instrument in the Following Places
• Outdoors
• Indirectsunlight,ornearsourcesofheat
• Inanenvironmentwithexcessiveamountsofsoot,steam,dust,orcorrosivegases
• Nearsourcesofstrongmagneticfields
• Nearhigh-voltageequipmentorpowerlines
• Inanenvironmentthatissubjecttolargelevelsofmechanicalvibration
• Onanunstablesurface
• Wheretheinstrumentisexposedtowaterorotherliquids.
Connecting Optical Fiber Cables
Cleaning the Connector End Faces of Optical Fiber Cables
Clean the connector end face of the optical fiber cable under measurement before connecting it to the
instrument. If dust is adhered to the connector end face, it may damage the instrument’s optical connector. If
this happens, the instrument will not be able to make correct measurements.
Connecting a Optical Cable to the AQ7277
Connect the optical cable to the optical connector of the AQ7277.
CAUTION
Insert the optical fiber cable connector slowly and straight into the optical port. If you shake the
connector to the left and right or force it into the port, the optical connector may be damaged.
Some optical connectors on the market do not meet the specifications. Use optical connectors that
are approved or used by national or local telecom carriers and providers in your area.

8/9 IM AQ7277-03EN
Connecting to the Power Supply
WARNING
Make sure to follow the warnings below when connecting the power cord. Failure to do so may
cause electric shock or damage to the instrument.
• CheckthatpowerisnotbeingsuppliedtothepowercordbeforeconnectingittotheAQ7277.
• Besuretouseapowercordthatmatchesthepowersupplyterminalofthisinstrument.
• CheckthatthepowersupplymeetstheAQ7277’sratedsupplyvoltageandthepermittedsupply
voltage range.
• Donotplaceobjectsontopofthepowercord,andkeepitawayfromheatsources.
• Donotusetwopowersupplyportsatthesametime.
Connect the power cord to one of the power supply ports.
TheAQ7277hastwotypesofpowersupplyports:HEC3900-010-110andMDF6-4DP3.5DS.Usethe
appropriate port that matches your power supply.
Power-on Operation
If you are using the Remote Controller for the AQ7277 Remote OTDR (available at the YOKOGAWA website)
and the AQ7277 starts normally, the top menu will appear in the control window of the Remote Controller that is
displayed in the PC monitor window.
Control window of the Remote Controller for the AQ7277 Remote OTDR that is displayed
in the PC monitor window
Top menu

9/9IM AQ7277-03EN
For instructions on how to install the Remote Controller and how to connect the AQ7277 to a PC, see the User’s
Manual IMAQ7277-61EN (Remote Controller for the AQ7277 Remote OTDR: Configuring Network Settings and
Updating the Firmware).
Note
You can download the Remote Controller for the AQ7277 Remote OTDR from the YOKOGAWAwebsite.
https://y-link.yokogawa.com/YL007/
If the AQ7277 Does Not Start Normally When the Power Is Turned On
Check the following items.
• Checkthatpowerisbeingsuppliedthroughthepowercord.
• Checkthatthepowercordisconnectedproperly.
If the AQ7277 still does not start normally after checking these items, contact your nearest YOKOGAWA dealer
for repairs.
Connecting the USB Interface or Ethernet Interface
Connect the USB or Ethernet interface depending on the network you are using.
USB Interface Specifications
Electrical and mechanical specifications: USB 1.0
Connector: Type B (receptacle)
Number of ports: 1
Note
To use the USB interface, you need to obtain the USB driver and communication library.
Download them from the YOKOGAWA Web page.
https://y-link.yokogawa.com/YL007/
Ethernet Interface Specifications
Number of ports: 1
Electrical and mechanical specifications: IEEE802.3
Transmission system: Ethernet (10BASE-T/100BASE-TX)
Data rate: 10 Mbps/100 Mbps
Communication protocol: TCP/IP
Connector: RJ45
Port number: 10001/tcp
Note
• TousetheEthernetinterface,youneedobtainthecommunicationlibrary.
Download it from the YOKOGAWA Web page.
• TousetheEthernetinterface,youneedtoconfiguretheTCP/IPsettingsinadvance.
Configure them using the dedicated software, Remote Controller for the AQ7277 Remote OTDR. You can download
the software from the YOKOGAWA Web page.
https://y-link.yokogawa.com/YL007/