YOKOGAWA AQ6375E User manual

User’s
Manual AQ6375E
Optical Spectrum Analyzer
Getting Started Guide
IM AQ6375E-02EN
2nd 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

i
IM AQ6375E-02EN
Thank you for purchasing the AQ6375E 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
• October 2022 1st Edition
• March 2023 2nd Edition
2nd Edition: March 2023 (YMI)
All Rights Reserved, Copyright © 2022 Yokogawa Test & Measurement Corporation

ii IM AQ6375E-02EN
Manuals
The following manuals, including this one, are provided as manuals for this instrument. Please read
all manuals.
Manual Title Manual No. Description
AQ6375E
Optical Spectrum Analyzer
User’s Manual
IM AQ6375E-01EN The manual is located on the CD included
in your package (pdf format). Explains
all functions and operating procedures of
the AQ6375E except remote control and
program functions.
AQ6375E
Optical Spectrum Analyzer Getting Started
Guide
IM AQ6375E-02EN This manual. This guide explains
the handling precautions, installation
procedure, basic operations, and
specifications of this instrument.
AQ6375E
Optical Spectrum Analyzer Remote Control
User’s Manual
IM AQ6375E-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.
Optical Spectrum Analyzer IM AQ6360-92Z1 A document for China.
Safety Instruction Manual IM 00C01C01-01Z1 A document for the EU.
The “EN”, “E”, and “Z1” in the manual numbers are the language codes.
Manuals in the 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 AQ6375E Optical Spectrum Analyzer
User’s Manual
IM AQ6375E-01EN
Communication Interface.pdf AQ6375E
Optical Spectrum Analyzer
Remote Control User’s Manual
IM AQ6375E-17EN
Online Help
The content similar to the IM AQ6375E-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 AQ6375E-01EN.

iii
IM AQ6375E-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.
AQ6375E 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
AQ6375E AQ6375E Optical Spectrum Analyzer
Specification -01
-10
-20
Limited model
Standard Model
Extended model
Built-in light
source
-L1 Wavelength reference 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
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.
• No. (Instrument Number)
When contacting the dealer from which you purchased the instrument, please give them the
instrument number.

iv IM AQ6375E-02EN
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 B8080FR 4 —
Manuals
Printed manuals IM AQ6375E-02EN 1 Getting Started Guide (this guide)
IM AQ6360-92Z1 1 Document for China
IM 00C01C01-01Z1 1 Document for the EU.
PIM 113-01Z2 1 List of worldwide contacts
Manual CD A1036US 1 For the types of manuals that CD contains,
see the next page.
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
Checking the Contents of the Package

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IM AQ6375E-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.

vi IM AQ6375E-02EN
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

vii
IM AQ6375E-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

viii IM AQ6375E-02EN
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.
Manual CD
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.
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

ix
IM AQ6375E-02EN
French
AVERTISSEMENT
Utiliser l’instrument aux seules fins pour lesquelles il est prévu
Cet instrument est un appareil de mesure de forme d’onde pour le contrôle et la mesure des
signaux électriques. Ne pas utiliser cet instrument à d’autres fins que celles de mesure de
forme d’onde.
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, celleci 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 sous tension, veiller à brancher la mise à la terre de protection afin d’éviter
les chocs électriques. 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 lorsque les fonctions de protection sont défectueuses
Avant d’utiliser l’instrument, vérifier que les fonctions de protection, telles que le raccordement
à la terre et le fusible, fonctionnent correctement. En cas de dysfonctionnement possible, ne
pas utiliser l’instrument.
Source de lumière de référence (lorsque la source de lumière intégrée correspond aux
caractéristiques L1)
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

xIM AQ6375E-02EN
Ne pas utiliser dans un environnement explosif
Ne pas utiliser l’instrument en présence de gaz et de vapeur 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.
Relier l’instrument à la terre avant de le brancher sur des connexions externes
Toujours relier l’instrument à la terre avant de le brancher aux appareils à mesurer ou à une
commande externe. Avant de toucher un circuit, mettre l’instrument hors tension et vérifier
l’absence de tension. Pour éviter un choc électrique et un accident, connecter la terre des
sondes ou les connecteurs d’entrée au potentiel de terre de l’appareil faisant l’objet de la
mesure. La terre de chaque borne d’entrée du signal (connecteur d’entrée) de cet instrument
est commune à la terre de protection de l’instrument (voir le schéma fonctionnel à l’annexe 3).
Ne pas appliquer de signaux de potentiel flottant à la terre du connecteur d’entrée. Ceci est
extrêmement dangereux car le potentiel de terre risque d’être court-circuité.
Catégorie de mesure
La catégorie de mesure des bornes d’entrée du signal de cet instrument est Autre (O). Ne pas
l’utiliser pour mesurer l’alimentation électrique, ni pour les catégories de mesure II, III et IV.
Accessoires
Utiliser les accessoires spécifiés dans ce manuel. En outre, utiliser les accessoires de ce
produit uniquement avec des produits Yokogawa pour lesquels ils sont spécifiés comme
accessoires.
Ne pas utiliser d’accessoires défectueux.
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.
Manuel CD
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.
Accessoires
Utiliser les accessoires spécifiés dans ce manuel. En outre, utiliser les accessoires de ce
produit uniquement avec des produits Yokogawa pour lesquels ils sont spécifiés comme
accessoires.
Ne pas utiliser d’accessoires défectueux.
Safety Precautions

xi
IM AQ6375E-02EN
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 for Laser Products
This instrument uses a laser light source. This instrument is a Class 1 laser product as defined
by EN 60825-1:2014+A11:2021/IEC 60825-1:2007 Safety of Laser Products-Part 1: Equipment
Classification, Requirements and User’s Guide. In addition, this instrument complies with 21 CFR
1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007.
Laser Class 1 Label
Information about the Laser Light Source Used
Class Laser Type Wavelength Maximum
Output Power
Diameter of
Mode Field
Repetation
Rate
Numerical
Aperture
1 EE-LED 1.53 µm 0.04 mW 9 µm CW 0.1
Safety Precautions

xii IM AQ6375E-02EN
Regulations and Sales in Each Country or Region
Waste Electrical and Electronic Equipment (WEEE)
(EU WEEE Directive valid only in the EEA* and UK WEEE Regulation in the UK)
This product complies with the WEEE marking requirement. This marking indicates
that you must not discard this electrical/electronic product in domestic household
waste. When disposing of products in the EEA or UK, contact your local Yokogawa
office in the EEA or UK respectively.
* EEA: European Economic Area
Batteries and Waste batteries
(EU Battery Directive/Regulation valid only in the EEA and UK Battery Regulation in
the UK)
Batteries are included in this product. This marking indicates they shall be sorted
out and collected as ordained in the EU battery Directive/Regulation and UK battery
Regulation.
Battery type: Lithium battery
When you need to replace batteries, contact your local Yokogawa office in the EEA or
UK respectively.
Authorized Representative in the EEA
Yokogawa Europe B.V. is the authorized representative of Yokogawa Test & Measurement
Corporation for this product in the EEA. To contact Yokogawa Europe B. V., see the separate list of
worldwide contacts, PIM 113-01Z2.
關於在台灣銷售
This section is valid only in Taiwan.
關於在台灣所販賣的符合其相關規定的電源線 A1100WD 的限用物質含量信息，請至下麵的網址進行
查詢
https://tmi.yokogawa.com/support/service-warranty-quality/product-compliance/

xiii
IM AQ6375E-02EN
Flow of Operation
The figure below is provided to familarize the first-time user with the general flow of this instrument
operation. For the details of each item, see the relevant section in IM AQ6375E-01EN or IM
AQ6375E-02EN.
Measurement Preparation
Setting Conditions and Measuring
Waveform Display
Installing the Instrument
Turning the Power On and Off
Alignment Adjustment
Wavelength Calibration
Purge
Connecting the DUT
Auto Sweep Setting and Measurement
Other Settings
Starting a Measurement (Sweep)
Displaying Waveforms
Displaying Calculated Waveforms
Displaying Power Spectral Density
Displaying Markers
Searching
Analyzing Waveforms
Waveform Analysis
Saving Waveforms
Storage Device
Saving Data
Section 3.1
Section 3.3
Section 3.4
Section 3.5
Section 3.6
Section 3.7
Section 3.2*
Sections 2.1* to 2.7*
Section 3.2*
Sections 4.1* to 4.4*
Section 4.5*
Section 4.8*
Section 5.1 to 5.4*
Sections 4.9*
Sections 6.1* to 6.10*
Section 7.1*
Sections 7.2* to 7.7*
* IM AQ6375E-01EN

xiv IM AQ6375E-02EN
Contents
Manuals ...........................................................................................................................................ii
Checking the Contents of the Package............................................................................................ iii
Conventions Used in This Manual ....................................................................................................v
Safety Precautions...........................................................................................................................vi
Regulations and Sales in Each Country or Region......................................................................... xii
Flow of Operation........................................................................................................................... xiii
Chapter 1 Part Names and Functions
1.1 Front Panel..................................................................................................................... 1-1
1.2 Rear Panel ..................................................................................................................... 1-2
1.3 Panel Keys and Knobs................................................................................................... 1-3
1.4 LCD Screen.................................................................................................................... 1-7
Chapter 2 Feature Summary
2.1 System Configuration..................................................................................................... 2-1
2.2 Measurement Summary................................................................................................. 2-2
2.3 Waveform Display .......................................................................................................... 2-4
2.4 Data Analysis ................................................................................................................. 2-5
2.5 Others Functions............................................................................................................ 2-6
Chapter 3 Preparing for Measurement
3.1 Installing the Instrument ................................................................................................. 3-1
3.2 Connecting the Device ................................................................................................... 3-6
3.3 Turning the Power ON/OFF ........................................................................................... 3-8
3.4 Alignment Adjustment .................................................................................................. 3-14
3.5 Wavelength Calibration ................................................................................................ 3-16
3.6 Purge............................................................................................................................ 3-21
3.7 Connecting the DUT..................................................................................................... 3-25
3.8 Types of Optical Fibers That Can Be Used with This Instrument................................. 3-28
Chapter 4 Common Operations
4.1 Touch Panel Operations................................................................................................. 4-1
4.2 Description of Function Menu ........................................................................................ 4-7
4.3 Using the Mouse and External Keyboard....................................................................... 4-9
4.4 Entering Numerical Values and Strings.........................................................................4-11
4.5 Setting the Date and Time............................................................................................ 4-14
Chapter 5 Maintenance
5.1 Inspection of Wavelength Accuracy ............................................................................... 5-1
5.2 Inspection of Level Accuracy.......................................................................................... 5-2
5.3 Updating the Firmware................................................................................................... 5-3
5.4 Mechanical Inspection.................................................................................................... 5-6
5.5 Operational Inspection ................................................................................................... 5-7
5.6 Replacing Fuses ............................................................................................................ 5-8
5.7 Warning Display Function .............................................................................................. 5-9
5.8 Daily Maintenance........................................................................................................ 5-12
5.9 Care during Storage..................................................................................................... 5-13
5.10 Recommended Replacement Parts ............................................................................. 5-14
5.11 Disposal ....................................................................................................................... 5-15

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1
2
3
4
5
6
App
Index
Contents
Chapter 6 Specifications
6.1 Specifications................................................................................................................. 6-1
6.2 External Dimensions ...................................................................................................... 6-4
Appendix
Appendix 1 MICROSOFT SOFTWARE LICENSE TERMS ........................................................... App-1

1-1
IM AQ6375E-02EN
1
2
3
4
5
6
App
Index
Part Names and Functions
Chapter 1 Part Names and Functions
1.1 Front Panel
DATA ENTRY section
Used for measurement
condition parameter input,
label input, etc.
For details on the keys,
see "DATA ENTRY
Section " in section 1.3.
FUNCTION section
Used to enter settings pertaining to all
measurements (sweep, measurement conditions,
data analysis, and various functions). For details on
the keys, see "DATA ENTRY Section " in section
1.3.
OPTICAL INPUT
Optical input connector. For
details on the usable optical
fiber cables, see section 3.9.
POWER
Used to start and shut down the
instrument. For details on the Power
ON/OFF, see section 3.3.
USB interface
Used to connect USB storage media. For details on the devices, see section 3.2.
Touch panel
Displays measured waveforms, measurement conditions, measured
values, and various controls.
For details on the LCD screen, see section 1.4. For details on touch panel
operations, see section 4.1.
CALIBRATION OUTPUT
Reference light source optical
output connector used for alignment
adjustments and wavelength
calibration (when the built-in light
source specification is -L1), see
section 3.5.

1-2 IM AQ6375E-02EN
1.2 Rear Panel
ETHERNET
Ethernet Interface. For details on the Ethernet,
see section 9.5 in IM AQ6375E-01EN.
USB interface
Used to connect USB storage media. For details on
the devices, see section 3.2.
VIDEO OUT (XGA)
Analog RGB video signal
interface.
GAS IN
Purge gas filling port.
For details on the
purge, see section 3.6.
GAS OUT
Purge gas outlet port. For details on
the purge, see section 3.6.
GP-IB
GP-IB port for controlling this unit through an
external computer. For details on the GP-IB,
see chapter 2 in IM AQ6375E-17EN.
TRIGGER IN
Trigger input. For details on the
trigger input, see section 3.5 in
IM AQ6375E-01EN.
ANALOG OUT
Analog output. For details on the analog output,
see section 3.7 in IM AQ6375E-01EN.
TRIGGER OUT
Trigger output. For details on the trigger output, see section
3.6 in IM AQ6375E-01EN.
Exhaust holes
MAIN POWER
Used to turn the main power
ON/OFF. For details on the
Power ON/OFF, see section 3.3.
Power cord connector
Connect the power cord to this
connector. For details on the Power
cord, see section 3.3.

1-3
IM AQ6375E-02EN
1
2
3
4
5
6
App
Index
Part Names and Functions
1.3 Panel Keys and Knobs
FUNCTION Section
The FUNCTION section contains 16 function keys and 8 auxiliary keys. When
you press a function key, information about the function is displayed on the soft
key menu located on the right side of the LCD display.
AUTO
Executes auto sweep
REPEAT
Executes repeat sweep
SINGLE
Executes single sweep
STOP
Stops sweeping
CENTER
The CENTER key contains functions related to setting the center wavelength,
center frequency and center wavenumber for measurements. The soft key
functions change depending on whether the screen display mode is wavelength
display mode or frequency display mode.
SPAN
The SPAN key contains functions pertaining to settings for the wavelength
span, frequency span or wavenumber span being measured. The soft key
functions change according to whether the screen display mode is wavelength
display mode or frequency display mode.
LEVEL
The LEVEL key contains functions related to level axis settings.When you press
the LEVEL key, the soft key menu for setting reference level appears.
SWEEP
The SWEEP key contains functions related to sweeping. When you press the
SWEEP key, the soft key menu for sweeping appears.
RESOLN
The RESOLN key contains functions related to wavelength resolution settings.
When you press the RESOLN key, the soft key menu for resolution appears.
SENS
The SENS key contains functions related to sensitivity settings. When you
press the SENS key, the soft key menu for sensitivity appears.
SETUP
The SETUP key contains functions related to measurement condition settings.
FUNCTION
SWEEP
CENTER
RESOLN SENS
LEVEL
SETUP
MARKER
ZOOM
PEAK
SEARCH
TRACE
ANALYSIS
USER FILE
APP
REMOTE
UNDO/
LOCAL
HELP
PRESET
PRT
SCN
SYSTEM
AUTO
REPEAT SINGLE
STOP
SPAN