YOKOGAWA AQ7277B User manual

User’s
Manual
IM AQ7277B-01EN 1/12
4th Edition
4th Edition: March 2018 (YMI)
All Rights Reserved, Copyright © 2016 Yokogawa Test & Measurement Corporation
Printed in Japan
Model AQ7277B Remote OTDR
Thank you for purchasing the AQ7277B 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 the
AQ7277B Remote OTDR for users that are involved in remote fiber test.
For correct operation, please read this manual thoroughly before use.
The AQ7277B comes with the following manuals. Please keep them in a safe place.
Manual Title Manual No. Description
AQ7277B Remote OTDR User’s Manual IM AQ7277B-01EN This manual.
AQ7277B Remote OTDR User’s Manual IM AQ7277B-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 AQ7277B
available at the YOKOGAWA website.
Manual Title Manual No. Description
Remote Controller for the AQ7277B
Remote OTDR Configuring Network
Settings and Updating the Firmware
IM AQ7277B-61EN This manual explains how to use the remote
controller for configuring the AQ7277B.
AQ7277B OTDR Communication
Interface User's Manual IM AQ7277B-17EN Explains the features related to using communication commands to control the AQ7277B..
You can download the remote controller for the AQ7277B (Yokogawa OTDR Remote Controller) and the manual
from the following webpage.
https://tmi.yokogawa.com/library/
Trademarks
• Microsoft,Windows,Windows7,Windows8andWindows8.1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:September2016
• 2ndEdition:November2016
• 3rdEdition:October2017
• 4thEdition:March2018

2/12 IM AQ7277B-01EN
Checking the Package Contents
AQ7277B
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.
xxx-xxxx
Model Suffix Code Description
AQ7277B Remote OTDR
Suffix code -B01 1650 nm wavelength (with filter)
-B02 1550 nm wavelength
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 AQ7277B-01EN 1 This manual
IM AQ7277B-92Z1 1 Amanual for China
Inquiries PIM113-01Z2 1 List of worldwide contacts
Remote Controller for the AQ7277B Remote OTDR
A free software for configuring the Remote OTDR.
You can download the remote controller for the AQ7277B (Yokogawa OTDR Remote Controller) from the
following webpage.
https://tmi.yokogawa.com/library/
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.

3/12IM AQ7277B-01EN
French Une manipulation ou une utilisation incorrectes risquent de blesser l’utilisateur ou
d’endommager l’instrument. Ce symbole apparaît sur l’instrument pour indiquer à l’utilisateur
qu’il doit se reporter au manuel de l’utilisateur afin d’y lire les instructions spécifiques
correspondantes. Ce même symbole apparaît à la section correspondante du manuel de
l’utilisateur pour signaler lesdites instructions. Dans le manuel de l’utilisateur, ce symbole
est accompagné des termes AVERTISSEMENT et ATTENTION.
AVERTISSEMENT Attire l’attention sur des gestes ou des conditions susceptibles de provoquer des
blessures graves (voire mortelles), et sur les précautions de sécurité pouvant
prévenir de tels accidents.
ATTENTION
Attire l’attention sur des gestes ou des conditions susceptibles de provoquer des
blessures légères ou d’endommager l’instrument ou les données de l’utilisateur,
et sur les précautions de sécurité susceptibles de prévenir de tels accidents.
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AQ7277B’sratedsupplyvoltageandthat
it does not exceed the maximum voltage range specified for the power cord.
• Useaninsulatedsecondarypowersupply(LPSorequivalent).
• UseanACadapterthatmeetstheAQ7277Bratings.
• UseanACadapterwithapowercordthatmeetstheappropriatestandardsoftheareathatyou
are using it in.
Check the Power Supply Capacity
Make sure that the power supply capacity sufficiently meets theAQ7277B’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.

4/12 IM AQ7277B-01EN
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 AQ7277B, take the measurement
environment (such as the presence of communication light) into consideration.
When Using a Wavelength (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 1650
nm laser beams or depending on the lightfastness power rating or the attenuation characteristics
of the blocking filter, the light pulses that the AQ7277B 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.
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.
French
AVERTISSEMENT
Utiliser l’instrument aux seules fins prévues
• Cetinstrumentdemesureoptiqueestprévupourmesurerlescaractéristiquesoptiquesdes
sources lumineuses et évaluer leur performance. Ne pas utiliser cet instrument à d’autres fins
que celles de mesure optique.
• Utilisezunealimentationélectriquesecondaireisolée(LPSouéquivalent).
• UtilisezunadaptateursecteurquirépondauxpuissancesAQ7277B.
• Utilisezunadaptateurdecourantalternatifavecunecordedepouvoirquirencontrelesnormes
appropriées de la région dans laquelle vous l'utilisez.
Inspecter l'apparence physique
Ne pas utiliser l'instrument si son intégrité physique semble être compromise.
Vérifier l'alimentation
Avant de brancher le cordon d'alimentation, vérifier que la tension source correspond à la tension
d'alimentation nominale du AQ7277B et qu'elle est compatible avec la tension nominale maximale
du cordon d'alimentation.
Faisceau laser
Ne pas fixer directement ou indirectement le faisceau laser, ni la réflexion spéculaire du faisceau
en l'absence d'équipement de protection. Ne pas orienter le faisceau laser en direction des yeux.
Le faisceau laser peut entraîner la cécité ou causer des lésions oculaires.
Ne pas utiliser dans un environnement explosif
Ne pas utiliser l'instrument en présence de gaz ou de vapeurs inflammables. Cela pourrait être
extrêmement dangereux.

5/12IM AQ7277B-01EN
Ne pas retirer le capot, ni démonter ou modifier l’instrument
Seul le personnel YOKOGAWA qualifié est habilité à retirer le capot et à démonter ou modifier
l’instrument. Certains composants à l’intérieur de l’instrument sont à haute tension et par
conséquent, représentent un danger.
Retirer les connexions lors du transport ou de déplacer l'instrument
Pour transporter ou de déplacer l'instrument, supprimer tous les enregistrements (y compris le
cordon d'alimentation) et les câbles.
ATTENTION
Lors de l'utilisation de la même longueur d'onde qui a été utilisée dans la communication
réelle pour effectuer des mesures
Si le signal de communication est présent dans la fibre optique que vous voulez mesurer,
la communication peut être affectée. Prendre les précautions nécessaires pour éviter des
interférences de communication.
En outre, pour effectuer des mesures précises avec l'AQ7277B, prendre l'environnement de
mesure (tels que la présence du signal de communication) en considération.
Lors de l'utilisation d'une longueur d'onde (1650 mm) différente de celle utilisée dans la
communication réel pour effectuer des mesures
Lorsque le signal de communication est présent dans la fibre en cours de mesure, utiliser un
faisceau lumineux d'une longueur d'onde différente pour effectuer les mesures.
Si l'appareil est connecté au système en cours de mesure ne dispose pas de filtre pour bloquer
1650 nm de faisceaux laser ou en fonction de la puissance nominale de la lumière ou des
caractéristiques d'atténuation du filtre de blocage, les impulsions lumineuses que l'AQ7277B émet
peuvent endommager l'appareil. S'assurer d'installer un filtre de blocage approprié et vérifier que
les notes de l'appareil sont adéquates avant de prendre des mesures.
Limitations relatives à l’environnement opérationnel
Ce produit est un produit de classe A (pour environnements industriels). L’utilisation de ce produit
dans un zone résidentielle peut entraîner une interférence radio que l’utilisateur sera tenu de
rectifier.
Safety Precautions for Laser Products
This instrument uses a laser light source. This instrument is a Class 1M laser product as defined by IEC/EN
60825-1:2007SafetyofLaserProducts—Part1:EquipmentClassificationandRequirements.Inaddition,this
instrument complies with 21 CFR 1040.10, 1040.11 except for deviations pursuant to Laser Notice No. 50, dated
June 24, 2007.
Laser Specifications
Model Class Center
Wavelength Maximum Output Power1Mode Field Diameter Beam Divergence
AQ7277B-B01 1M 1650 nm CW: 50 mW@ 1650 nm
PULSE: 200 mW@1650 nm
PULSEwidth:20μs@1650nm,Duty:≤3.0%
9μm 11.5°
AQ7277B-B02 1M 1550 nm CW: 50 mW@1550 nm
PULSE: 200 mW@1550 nm
PULSEwidth:20μs@1550nm,Duty:≤3.0%
9μm 11.5°
1: Under single fault conditions.
Authorized Representative in the EEA
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.

6/12 IM AQ7277B-01EN
Specifications
Interface Item Specification
External control I/F USB port USB2.0 TYPE B(mini)×1
LAN port Ethernet (10BASE-T/100BASE-TX)
External I/F DC power supply input port For +12 VDC supply LGP6531-1500FC (or equivalent)
LED connector For driving LEDs (power supply, light emission, alarm)
OTDR Features
Item Specification
Model AQ7277B-B01 AQ7277B-B02
Wavelength 1650 nm ± 5 nm*1
1650 nm ± 10 nm*2 1550 nm ± 25 nm
Pulse light output +15 dBm or less -
Event dead zone*3 0.7 m (0.6 m typ)
Attenuation dead zone*4 4 m (typ)
Dynamic range*5 37 dB (40 dB typ) 44 dB (50 dB typ)
Distance range 0.2, 0.5, 1, 2, 5, 10, 20, 30, 50, 100, 200, 300, 400, 512 km
Pulse width*6 3, 10, 20, 30, 50, 100, 200, 300, 500, 1000, 2000, 5000, 10000, 20000 ns
Distance measurement accuracy ±0.75 m + measured distance × 2 × 10–5 ± the sampling resolution
Loss measurement accuracy ±0.03 dB/dB
Sampling resolution 2 cm min.
Reading resolution Horizontal axis: 1 cm min. Vertical axis: 0.001 dB min.
Sample data points 256,000 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)
Laser class 1M
*1 At the -20 dB point from the pulse output peak
*2 At the -60 dB point from the pulse output peak
*3 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
55 dB. IOR=1.50
*4 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 55 dB. IOR=1.50
*5 SNR=1,20μspulsewidth,200kmdistancerange,8msamplingresolution,3minutemeasurementtime.
*6 The range depends on the distance range.
At 23 °C ± 2 °C unless otherwise specified.
General Specifications
Item Specification
Operating
environment Ambient temperature -10 to 50 °C
Ambient humidity 0to90%RH(nocondensation)
Elevation 4000 m or less
Storage
environment Ambient temperature –20 to 60 °C
Ambient humidity 0to90%RH(nocondensation)
Elevation 4000 m or less
DC power
supply Rated supply voltage 12 VDC 2.5 Aor less
Permitted supply
voltage range 12VDC±10%
Warm-up time At least 30 minutes
Dimensions
and weight Dimensions 230 mm (W) × 50 mm (H) × 140 mm (D), excluding protrusions
Weight Approx. 1 kg
Laser safety standard
Compliantstandards:IEC/EN60825-2007Class1M,
GB 7247.1-2-2012, FDA 21 CFR1040.10 and 1040.11
EMC standards Compliant standards
EN 61326-1 Class A
EN 55011 Class A, Group1
EMC Regulatory Arrangement in Australia and New Zealand EN 55011 Class A, Group1
Korea Electromagnetic Conformity Standard ( 한국 전자파적합성기준 )
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.
Environmental Standard EN50581monitoringandcontrolInstrumentsincludingthoseforindustrialuse

7/12IM AQ7277B-01EN
External Dimensions
+
2.5 A
12 V
DC INPUT
4-M3
Unless otherwise specified, tolerances are ±3% (however,
tolerances are ±0.3 mm when below 10 mm).
Unit: mm
140
230
32.9 107.9 203.9
110 15
24
10.5 38.7
43.3
200 15
77.9
38.3
50
137.9
OTDR(SMF)
λ=xxxx nm
LED I/F
Rear
Component Names
+
2.5 A
12 V
DC INPUT
Power supply
ports
USB port
(type B)
Optical connector
M3 screws (four locations)
Ethernet port
LED connector
Ventilation holes
Ventilation holes
OTDR(SMF)
λ=xxxx nm
LED I/F
Rear

8/12 IM AQ7277B-01EN
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 AQ7277B, the AQ7277B will
become hot and may break down.
French
AVERTISSEMENT
• L'instrumentestprévupouruneutilisationenintérieur.Nepasl'installer,nil'utiliseràl'extérieur.
• Installerl'instrumentdemanièreàpourvoirimmédiatementledébrancherdusecteurencasde
fonctionnement anormal ou dangereux.
ATTENTION
Ne pas obstruer les orifices de ventilation.
Si vous obstruez les orifices de ventilation sur les panneaux avant et arrière de l'AQ7277B,
l'AQ7277B se chauffera peut tomber en panne.
FixtheAQ7277B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 AQ7277B case is 3 mm to 6 mm in
length.
AQ7277B 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.

9/12IM AQ7277B-01EN
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 AQ7277B
Connect the optical cable to the optical connector of the AQ7277B.
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.
French
ATTENTION
Insérer les connecteurs de câbles à fibre optique délicatement et sans les incliner dans les ports
optiques. Éviter de faire pression sur le connecteur ou de forcer pour l’insérer dans le port, car
cela pourrait endommager le connecteur optique ou le port optique.
Certains connecteurs optiques sur le marché ne répondent pas aux spécifications. Utiliser des
connecteurs optiques homologués ou utilisés par les entreprises et les fournisseurs de services
de télécommunications de votre région.

10/12 IM AQ7277B-01EN
Connecting to the Power Supply
WARNING
• Useaninsulatedsecondarypowersupply(LPSorequivalent).
• 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
AQ7277B.
• Besuretouseapowercordthatmatchesthepowersupplyterminalofthisinstrument.
• CheckthatthepowersupplymeetstheAQ7277B’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.
• UseanACadapterthatmeetstheAQ7277Bratings.
• UseanACadapterwithapowercordthatmeetstheappropriatestandardsoftheareathatyou
are using it in
French
AVERTISSEMENT
• Utilisez une alimentation électrique secondaire isolée (LPS ou équivalent).
• S'assurerdesuivrelesavertissementsci-dessouslorsdelaconnexionducâbled'alimentation.
Ne pas le faire peut provoquer un choc électrique ou endommager l'appareil.
• Vérifierquelecâbled'alimentationn'estpassoustensionavantdeleconnecterà
l'AQ7277B.
• Veilleràutiliseruncâbled'alimentationquicorrespondàlaborned'alimentationdecet
appareil.
• Vérifierquel'alimentationcorrespondàlatensionnominaled'alimentationdel'AQ7277Betà
la plage de tension d'alimentation autorisée.
• Nepasdéposerdesobjetssurlecâbled'alimentation,etleteniréloignédessourcesde
chaleur.
• Utilisez un adaptateur secteur qui répond aux puissances AQ7277B.
• Utilisez un adaptateur de courant alternatif avec une corde de pouvoir qui rencontre les normes
appropriées de la région dans laquelle vous l'utilisez.
Connect the power cord to the power supply ports.