YOKOGAWA AQ6374 User manual

User’s
Manual AQ6374
Optical Spectrum Analyzer
Getting Started Guide
IM AQ6374-02EN
4th Edition

Product Registration
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accessible from our website.
https://tmi.yokogawa.com/
PIM 103-05E

1
IM AQ6374-02EN
Thank you for purchasing the AQ6374 Optical Spectrum Analyzer. This instrument
enables high speed measurement of the optical properties of LD and LED light sources,
optical amps, and other devices. To improve ease of use, it includes mouse-based user
operation and a brand-new zoom function.
This getting started guide describes the instrument’s functions, operating procedures,
and handling precautions, and provides other important information for use of the
instrument. For correct operation, please read this manual thoroughly before use. After
reading this manual, keep it in a convenient location for quick reference in the event a
question arises during operation. There are three manuals for the AQ6374 including this
one. Read them along with this manual.
List of Manuals
Manual Title Manual No. Description
AQ6374 Optical Spectrum
Analyzer User’s Manual
IM AQ6374-01EN The manual is located on the CD included in
your package (pdf format). Explains all functions
and operating procedures of the AQ6374 except
remote control and program functions.
AQ6374 Optical Spectrum
Analyzer Remote Control
User’s Manual
IM AQ6374-17EN The manual is located on the CD included in
your package (pdf format). Explains functions for
controlling the instrument with communication
commands and program functions.
AQ6374 Optical Spectrum
Analyzer Getting Started
Guide
IM AQ6374-02EN This guide. Provided as a printed manual.
This guide explains the handling precautions,
basic operations, and specifications of the
AQ6374.
Optical Spectrum Analyzer IM AQ6360-92Z1 A document 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 Description Description
PIM 113-01Z2 List of worldwide contacts
Notes
• The contents of this manual are subject to change without prior notice as a result
of improvements in the instrument’s performance and functions. Display contents
illustrated in this manual may differ slightly from what actually appears on your screen.
• Every effort has been made in the preparation of this manual to 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 the
permission of Yokogawa Test & Measurement Corporation is strictly prohibited.
Trademarks
• Microsoft and Windows are trademarks or registered trademarks of Microsoft
Corporation in the United States and/or other countries.
• Adobe and Acrobat are trademarks or registered trademarks of Adobe Systems
incorporated.
• The company and product names used in this manual are not accompanied by the
trademark or registered trademark symbols (TM, ®)
• Other company and product names are trademarks or registered trademarks of their
respective companies.
4th Edition : April 2021 (YMI)
All Rights Reserved, Copyright © 2017 Yokogawa Test & Measurement Corporation

2IM AQ6374-02EN
Revisions
• 1st Edition: February 2017
• 2nd Edition: October 2017
• 3rd Edition: April 2019
• 4th Edition: April 2021

3
IM AQ6374-02EN
Checking the Contents of the Package
After opening the package, check the following items before beginning use. If any of the
contents are incorrect, missing, or appear to be abnormal, please contact your Yokogawa
dealer or representative.
AQ6374 Main Unit
Check that the model and suffix code on the name plate on the rear of the instrument
match those of your order. When contacting the dealer from which you purchased the
instrument, please give them the instrument number.
MODEL Suffix Code2Description
AQ6374 Optical Spectrum Analyzer AQ6374
Specification -10 Standard Model
Built-in light -L1 Wavelength Reference Source
source
Power cord1-D UL/CSA standard and PSE compliant, Rated voltage: 125 V
-F VDE/Korean standard, Rated voltage: 250 V
-R Australian standard, Rated voltage: 250 V
-Q British standard, Rated voltage: 250 V
-H Chinese standard, Rated voltage: 250 V
-N Brazilian standard, Rated voltage: 250 V
-T Taiwanese standard, Rated voltage: 125 V
-B Indian standard, Rated voltage: 250 V
-U IEC Plug Type B, Rated voltage: 250 V
-Y No power cord included.3
Options /FC AQ9447 (FC) Connector Adapter (for optical input)4
/SC AQ9447 (SC) Connector Adapter (for optical input)4
/RFC AQ9441 (FC) Connector Adapter (for calibration light source
output)5
/RSC AQ9441 (SC) Connector Adapter (for calibration light source
output)5
1 Make sure that the attached power cord meets the designated standards of the country and
area that you are using it in.
2 For products whose suffix code contains “Z,” an exclusive manual may be included. Please
read it along with the standard manual.
3 Prepare a power cord that complies with the standard specified by the country or region that
the instrument will be used in.
4 Already attached to the optical input of the AQ6374 front panel.
5 Already attached to the calibration light source output of the AQ6374 front panel.
• No. (Instrument Number)
Please contact your nearest Yokogawa representative.

4IM AQ6374-02EN
Checking the Contents of the Package
Accessories
Part Name Model or Part No. Quantity Specifications and Notes
Power cord1A1006WD 1 UL/CSA standard and PSE compliant
A1009WD VDE/Korean standard
A1024WD Australian standard
A1054WD British standard
A1064WD Chinese standard
A1088WD Brazilian standard
A1100WD Taiwanese standard
A1101WD Indian standard
A1102WD IEC Plug Type B
Rubber feet A9088ZM 2 1 A9088ZM sheet
Manuals
Printed Manuals IM AQ6374-02EN 1 Getting Started Guide
IM AQ6374-92Z1 1 Document for China
PIM 113-01Z2 1 List of worldwide contacts
Manual CD A1023US 1 Contains PDFs of the user’s manuals
(For the types of manuals that CD
contains, see Manual CD below.)
1 Make sure that the attached power cord meets the designated standards of the country and
area that you are using it in. If the suffix code is -Y, a power cord is not included.
Manual CD
The English directory in the manual CD contains the PDF files shown below. The CD
also contains Japanese manuals.
File Name Manual Title Manual No.
Features & Operation Manual.pdf AQ6374 Optical Spectrum Analyzer IM AQ6374-01EN
User’s Manual
Communication Interface.pdf AQ6374 Optical Spectrum Analyzer IM AQ6374-17EN
Remote Control User’s Manual
To view the PDF data, you need Adobe Acrobat Reader or a software application that
can open PDF data.
WARNING
Never play this manual CD, which contains the user’s manuals, in an audio CD
player. Doing so may cause loss of hearing or speaker damage due to the large
sounds that may be produced.
French
AVERTISSEMENT
Ce CD contient les manuels d’utilisation. Ne jamais insérer ce CD dans un lecteur
de CD audio. Cela pourrait entraîner une perte d’audition ou l’endommagement
des enceintes en raison du volume potentiellement élevé des sons produits.
Accessories (Sold Separately)
Part Name Model/Part Number Specifications
AQ9447
Connector Adapter AQ9447-FC FC connector (for optical input)
AQ9447-SC SC connector (for optical input)
AQ9441
Connector Adapter AQ9441-FC FC connector (for calibration light source output)
AQ9441-SC SC connector (for calibration light source output)

5
IM AQ6374-02EN
Safety Precautions
This product is designed to be used by a person with specialized knowledge.
This instrument is an IEC safety class I(provided with terminal for protective earth
grounding). 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.
This manual is an essential part of the product; keep it in a safe place for future
reference. Yokogawa Electric Corporation assumes no liability for the customer’s failure
to comply with these requirements.
The following symbols are used on this instrument.
Danger, Refer to the user's 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.
Alternating current
ON(power)
OFF(power)
French
Avertissement : À manipuler délicatement.
Toujours se reporter aux manuels d’utilisation et d’entretien. Ce symbole a été
apposé aux endroits dangereux de l’instrument pour lesquels des consignes
spéciales d’utilisation ou de manipulation ont été émises. Le même symbole
apparaît à l’endroit correspondant du manuel pour identifier les consignes qui s’y
rapportent.
Courant alternatif
Marche (alimentation)
Arrêt (alimentation)

6IM AQ6374-02EN
Safety Precautions
Failure to comply with the precautions below could lead to injury or death or
damage to the instrument.
WARNING
• Use the Instrument Only for Its Intended Purpose
The optical measuring instrument 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 instrument’s rated supply
voltage and that it does not exceed the maximum voltage range of the power
cord to use.
• Use the Correct Power Cord and Plug
To prevent the possibility of electric shock or fire, be sure to use the power cord
for the instrument. The main power plug must be plugged into an outlet with a
protective earth terminal. Do not disable this protection by using an extension
cord without protective earth grounding.
Further, do not use this power cord with other instruments.
• Connect the Protective Grounding Terminal
Make sure to connect the protective earth to prevent electric shock before
turning ON the power. The power cord that you can use for the instrument is a
three-prong cord. Connect the power cord to a properly grounded three-prong
outlet.
• Do not Impair the Protective Grounding
Never cut off the internal or external protective earth wire or disconnect the
wiring of the protective earth terminal. Doing so poses a potential shock hazerd.
• Do not Operate with Defective Protective Grounding or Fuse
Do not operate the instrument if the protective earth or fuse might be defective.
Make sure to check them before operation.
• Reference light source output light
The instrument has a built-in reference light source for alignment adjustment,
and infrared light is always being output from the optical output connector. Never
look into the optical output connector. Infrared light entering the eyes can cause
severe injury and loss of vision.
• Do not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable liquids or vapors.
Operation in such environments constitutes a safety hazard.
• Do Not Remove the Covers or Disassemble or Alter the Instrument
Only qualified YOKOGAWA personnel may remove the covers and disassemble
or alter the instrument.
Opening the cover is dangerous, because some areas inside the instrument
have high voltages.
• Install or Use the Instrument in Appropriate Locations
• 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.

7
IM AQ6374-02EN
CAUTION
Operating Environment Limitations
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.
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.
• Inspecter l’apparence physique
Ne pas utiliser l’instrument si son intégrité physique semble être compromise.
• Vérifier l’alimentation
Assurez-vous que la tension d’alimentation correspond à la tension d’alimentation
nominale de l’appareil et qu’elle ne dépasse pas la plage de tension maximale
du cordon d’alimentation à utiliser.
• Utiliser le cordon d’alimentation et la fiche adaptés
Pour éviter tout risque de choc électrique, utiliser exclusivement le cordon
d’alimentation prévu pour cet instrument. La fiche doit être branchée sur une
prise secteur raccordée à la terre. En cas d’utilisation d’une rallonge, celle-ci
doit être impérativement reliée à la terre. Par ailleurs, ne pas utiliser ce cordon
d’alimentation avec d’autres instruments.
• Brancher la prise de terre
Avant de mettre l’instrument sous tension, penser à brancher la prise de terre
pour éviter tout choc électrique. Le cordon d’alimentation que vous utilisez pour
l’instrument est un cordon à trois broches.
Brancher le cordon d’alimentation sur une prise de courant à trois plots et mise
à la terre.
• Ne pas entraver la mise à la terre de protection
Ne jamais neutraliser le fil de terre interne ou externe, ni débrancher la borne
de mise à la terre. Cela pourrait entraîner un choc électrique ou endommager
l’instrument.
• Ne pas utiliser avec un conducteur de terre ou un fusible défectueux
Ne pas utiliser l’instrument si le conducteur de terre ou le fusible est défectueux.
Vérifier le conducteur de terre et le fusible avant d’utiliser l’instrument.
• Source de lumière de référence
Cet instrument dispose d’une source de lumière de référence intégrée pour
les ajustements d’alignement. La lumière infrarouge est toujours émise depuis
le connecteur de sortie optique. Ne regardez jamais directement dans le
connecteur de sortie optique. La lumière infrarouge risquerait de gravement
vous blesser ou de provoquer une perte de vision.
Safety Precautions

8IM AQ6374-02EN
• 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.
• 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.
• Installer et utiliser l’instrument aux emplacements appropriés
• Ne pas installer, ni utiliser l’instrument à l’extérieur ou dans des lieux exposés
à la pluie ou à l’eau.
• Installer l’instrument de manière à pourvoir immédiatement le débrancher du
secteur en cas de fonctionnement anormal ou dangereux.
ATTENTION
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