YOKOGAWA AQ6370E User manual

User’s
Manual AQ6370E
Optical Spectrum Analyzer
Getting Started Guide
IM AQ6370E-02EN
1st Edition

User Registration
YOKOGAWA provides registered users with useful information and services. Please
allow us to serve you best by completing the user registration form accessible from
our website.
https://tmi.yokogawa.com/support/
Contact Us
If you want to resolve a technical support issue or need to contact YOKOGAWA,
please fill out the inquiry form on our website.
https://tmi.yokogawa.com/contact/
PIM 103-06E

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IM AQ6370E-02EN
Thank you for purchasing the AQ6370E Optical Spectrum Analyzer. This instrument enables high
speed measurement of the optical properties of LD and LED light sources, optical amps, and other
devices.
This getting started guide primarily explains the handling precautions and basic operations of this
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. The manuals for this instrument are listed on the next page. Please read all manuals.
Contact information of Yokogawa offices worldwide is provided on the following sheet.
Document No. 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 to the instrument’s performance and functionality. Refer to our website to view our
latest manuals.
• 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 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 is strictly prohibited.
Trademarks
• Microsoft, Windows, Windows 10, Windows 11, and MS-DOS are registered trademarks or
trademarks of Microsoft Corporation in the United States and/or other countries.
• Adobe and Acrobat are registered trademarks or trademarks of Adobe Systems incorporated.
• 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
companies.
Updating the Firmware
It is recommended to update the firmware to the latest version to improve the features and usability
of this instrument. Download the latest firmware from the YOKOGAWA website, or contact your
nearest YOKOGAWA dealer for details.
Revisions
• August 2023 1st Edition
1st Edition: August 2023 (YMI)
All Rights Reserved. Copyright © 2023 Yokogawa Test & Measurement Corporation

ii IM AQ6370E-02EN
Manuals
The following manuals, including this one, are provided as manuals for this instrument. Please read
all manuals.
Manuals Included with the Product
Manual Title Manual No. Description
AQ6370E
Optical Spectrum Analyzer Getting Started
Guide
IM AQ6370E-02EN This manual. This guide explains
the handling precautions, installation
procedure, basic operations, and
specifications of this instrument.
Model AQ6370E-00
Optical Spectrum Analyzer Limited model
User’s Manual
IM AQ6370E-51EN Explains the specifications of the limited
model of the AQ6370E.
Request to Download AQ6370E Manuals IM AQ6370E-73EN Describes the manuals provided on the
website.
Optical Spectrum Analyzer IM AQ6360-92Z1 A document for China.
Safety Instruction Manual IM 00C01C01-01Z1 A document for the EU.
Manuals Provided on the Website
Download the following manuals from our website.
Manual Title Manual No. Description
AQ6370E
Optical Spectrum Analyzer
User’s Manual
IM AQ6370E-01EN Explains all functions and operating
procedures of the AQ6370E except
remote control and program functions.
AQ6370E
Optical Spectrum Analyzer Remote Control
User’s Manual
IM AQ6370E-17EN Explains functions for controlling
the instrument with communication
commands and program functions.
For details on downloading manuals, see Request to Download AQ6370E Manuals (IM AQ6370E-
73EN).
The “EN”, and “Z1” in the manual numbers are the language codes.
Online Help
The content similar to the IM AQ6370E-01EN, is included in this instrument as a help file (some
the content may be omitted). For instructions on how to use the help file,
see section 9.7 in the IM AQ6370E-01EN.

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IM AQ6370E-02EN
Checking the Contents of the Package
Unpack the box, and check the following before operating the instrument. If the wrong items have
been delivered, if items are missing, or if there is a problem with the appearance of the items,
contact your nearest YOKOGAWA dealer.
AQ6370E Main Unit
Check that the model and suffix 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 Code1Specifications
AQ6370E AQ6370E Optical Spectrum Analyzer
Specification -10
-20
-00
Standard model
High performance model
Limited model
Built-in light
source
-L1
-L0
Wavelength reference source
Without Light source
Power Cord 2 -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 Adapter4
/SC AQ9447(SC) Connector Adapter4
/RFC AQ9441(FC) Connector Adapter5
/RSC AQ9441(SC) Connector Adapter5
1For products whose suffix code contains “Z,” an exclusive manual may be included. Please read it along
with the standard manual.
2
Make sure that the attached power cord meets the designated standards of the country and area that you
are using it in.
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 AQ6370E front panel.
5 Already attached to the calibration light source output of the AQ6370E front panel.
• No. (Instrument Number)
When contacting the dealer from which you purchased the instrument, please give them the
instrument number.

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Standard Accessories
The standard accessories below are supplied with the instrument. Check that all contents are
present and undamaged.
Item Model or Part No. Quantity Specifications and Notes
Power cord1See the figure
below.
(1) Included or not included depending on the
suffix code
Rubber stoppers A9088ZM 1 —
Manuals
Printed manuals IM AQ6370E-02EN 1 Getting Started Guide (this guide)
IM AQ6370E-51EN 1 Accompanying the limited model only
IM AQ6360-92Z1 1 Document for China
IM 00C01C01-01Z1 1 Document for the EU.
PIM 113-01Z2 1 List of worldwide contacts
Standard accessories are not covered by warranty.
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.
UL/CSA standard
A1006WD
VDE standard,
Korean standard
A1009WD
Australian
standard
A1024WD
D F R
Power cord (one cord that matches the suffix code is included)1
Chinese
standard
A1064WD
H
Brazilian standard
A1103WD
N
Taiwanese standard
A1100WD
T B
Indian standard
A1101WD
IEC plug Type B
A1102WD
U
BS standard
A1054WD
Q
Accessories (Sold Separately)
Part Name Model or Part No. Specifications
AQ9447 Connector Adapter AQ9447-FC
AQ9447-SC
FC connector (for optical input)
SC connector (for optical input)
AQ9441 Connector Adapter AQ9441-FC
AQ9441-SC
FC connector (for calibration light source output)
SC connector (for calibration light source output)
Checking the Contents of the Package

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IM AQ6370E-02EN
Conventions Used in This Manual
Prefixes k and K
Prefixes k and K used before units are distinguished as follows:
k: Denotes 1000. Example: 12 kg, 100 kHz
K: Denotes 1024. Example: 720 KB (file size)
Displayed Characters
Bold characters in procedural explanations are used to indicate panel keys and soft keys that are
used in the procedure and menu items that appear on the screen.
Notes and Cautions
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.
French
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.
Note Calls attention to information that is important for the proper operation of the
instrument.

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Safety Precautions
This product is designed to be used by a person with specialized knowledge.
This instrument is an IEC safety class I instrument (provided with a 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 part of the product and contains important information. Store this manual in a safe
place close to the instrument so that you can refer to it immediately. Keep this manual until you
dispose of the instrument.
YOKOGAWA assumes no liability for the customer’s failure to comply with these requirements.
The following symbols are used on this instrument.
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.
Laser radiation hazard
Alternating current
ON (power)
OFF (power)
French
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.
Danger : Appareil laser à rayonnement.
Courant alternatif
Marche (alimentation)
Arrêt (alimentation

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IM AQ6370E-02EN
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
This instrument is a waveform measuring device that monitors and measures electrical
signals. Do not use this instrument for anything other than as a waveform measuring device.
Check the Physical Appearance
Do not use the instrument if there is a problem with its physical appearance.
Use the Correct Power supply
First, ensure that the source voltage matches the rated supply voltage of the instrument and
that it is within the maximum rated voltage of the power cord you will use. Then connect the
power cord.
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 invalidate this protection by using an extension cord without protective earth
grounding. Further, do not use this power cord with other instruments.
Connect the Protective Ground Terminal
Be 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 may result in electric shock or damage to the instrument.
Do Not Use When the Protection Functions Are Defective
Before using this instrument, check that the protection functions, such as the protective
grounding and fuse, are working properly. If you suspect a defect, do not use the instrument.
Reference light source output light (when the built-in light source specification is -L1)
The instrument has a built-in reference light source for wavelength calibration, 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 gases or vapors. Doing so is
extremely dangerous.
Safety Precautions

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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. The inside of the instrument is dangerous because parts of it have high voltages.
Accessories
Use the accessories specified in this manual. Moreover, use the accessories of this product
only with Yokogawa products that specify them as accessories. Do not use faulty accessories.
Install or Use the Instrument in Appropriate Locations
• Do not install or use the instrument outdoors or in locations subject to rain or water.
• Install the instrument so that you can immediately remove the power cord if an abnormal or
dangerous condition occurs.
CAUTION
Operating Environment Limitations
This product is classified as Class A (for use in industrial environments). Operation of this
product in a residential area may cause radio interference, in which case the user will be
required to correct the interference.
Safety Precautions