advantest corporation Q7606A User manual

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ADVANTEST.
ADVANTEST CORPORATION
Optical Chirpform Test Set
OperationManual
MANUAL NUMBER FOE-8335028A01
@ 1999 ADVANTEST CORPORATION Firstprinting January20, 1999
A//rights reserved. PrintedinJapan
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!
No. ESEOO
Safety Summary
To ensure thomugh understanding of all functions and to ensure efficient use of this instrument, please read the
manual carefully before using. Note that Advantest bears absolutely no responsibility for the result of operations
caused dueto incorrect
or inappmpriate use of this instrument.
If the equipment is used in a manner not specifiedby Advantest, the protection provided by the equipment may
be impaired.
Warning Labels
Warning labels are applied toAdvantest products in locations where specific dangers exist. Pay
careful attention to these labels during handling.
Do not remove ortearthese labels. If you have
any questions regarding warning labels, please ask your nearest Advantest dealer. Our address
and phone number
are listed at the end of this manual.
Symbols of those warning labels
are shown below together with their meaning.
DANGER: Indicates an imminently hazardous situation which will result in death or serious
personal injury.
WARNING: Indicates a potentially hazardous situation which will result in death or serious
personalinjury.
CAUTION: Indicates a potentially hazardous situation which will result in personal injury or
a damage
to property including the product.
Basic Precautions
Please observe the following precautions toprevent fire,bum, electric shock, and personal inju-
ry.
Use a power cable rated for the voltage in question. Be sure however to use a power cable
conforming to safety standards of your nation when using a product overseas.
When inserting the plug into the electrical outlet, fust turn the power switch OFF and then
insert the plug as far as it will go.
When removing the plug fmm the electrical outlet, first turn the power switch OFFand then
pull it out by gripping the plug.
Do not pull on the power cable itself. Make sure your hands
, are dry at this time.
Before turning on the power, be sure to check that the supply voltage matches the voltage
requirements of the instrument.
Be sure to plug the power cable into an electrical outlet which has a safety ground terminal.
Grounding will be defeated if you use an extension cord which does not include a safety
ground terminal.
Be sure to use fuses rated for the voltage in question
Do not use this instrument with the case open.
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-
Safety Summary
Do not place objectson top of thisproduct. Also, do not place flowerpots orothercontainers
containingliquid such as chemicalsnear this product.
When the product has ventilation outlets, donot stick or dropmetal or easilyflammableob-
jects into the ventilation outlets.
When using the product on a cart, fix it with belts to avoid its drop.
When connectingthe product to peripheral equipmentturn the power off.
CautionSymbols Used Withinthis Manual
Symbolsindicatingitemsrequiring caution which are used in this manual are shown below to-
gether with their meaning.
DANGER: Indicatesan item where there is a danger of seriouspersonal injury (death or seri-
ous injury).
WARNING: Indicatesan item relating to personal safety or health.
CAUTION: Indicatesan item relating to possible damage to theproductor instrumentorrelat-
ingto a resmction on operation.
Safety Markson the Pmduct
The following safety marks can be found on Advantest products.
:
ATTENTION - Refer to manual
@ : Protectiveground (earth)terminal.
: DANGER - High voltage.
: CAUTION - Risk of electric shock.
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Safety Summary
Replacing Partswith Limited Lie
The followingparts used in the instrumentare main parts with limited life.
Replace the parts listed below after their expected lifespanhas expired.
Note that the estimated lifespan for the parts listed below may be shortened by factors such as
the environmentwhere the instrument is stored or used, and how oftenthe instrumentis used.
There is a possibility that each product uses differentparts with limited life. For more informa-
tion, refer to Chapter
l.
Main Parts with Limited Life
I
Part name Life
I
I Unit power supply
Fan motor
5 years
Electrolyticcapacitor
5 years I
I LCD panel
I LCD backlight 1 2.5 years I
Floppy disk drive 5 Yem
I
Precautionswhen Disposing of this Instrument
When disposing of harmful substances,be sure dispose of them properly with abiding by the
state-providedlaw.
Harmful substances:
(I) PCB (polycarbonbiphenyl)
(2)Mercury
(3) Ni-Cd (nickelcadmium)
(4) Other
Itemspossessingcyan, organicphosphorous and hexadic chromium
and items which may leak cadmiumorarsenic (excluding lead
in sol
der).
Example: fluorescent tubes, batteries
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EnvironmentalConditions
Thisinstrumentshould be only be used in an area which satisfies the followingconditions:
An ma free hm conosivegas
An areaaway from direct sunlight
A dust-freearea
Direct sunlight
. . . -..
, .... . -- 0
. ..
....
.. .
'CZ~'C2-c---..
Vibration
Figure-1 Environmental Conditions
at least 10 centimeters of space
en the rear panel and any other
Fire-2 Instrument Placement
Thisinstrument can be used safely under the following conditions:
Altitudeof up to 2000 m
Installation Categories11
Pollution Degree 2
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Certificate of Conformity
This is to
certify, that
Optical Chirpform Test Set
instrument, type, designation
complies with the provisionsof the EMC Directive 891336lEEC inaccordancewith
EN50081-1and EN50082-1and Low Voltage Directive 73123lEEC in accordancewith
EN61010.
ADVANTEST Corp.
Tokyo, Japan
ROHDE&SCHWARZ
Engineering and SalesGmbH
Munich, Germany
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Q7606m OpticalChirpformTest Set Operation Manual
CAUTIONS OF Q7606AIB
1.
CLASS 1 LASER PRODUCT Label (Only Q7606A)
The Q7606A is the product of the CLASS 1 LASER.
The accessories containsthe following label.
INTERWTIDNAL LASER WARNINQ LABELS
&4BIeSE FOR: JAPAN
GORWAV
SWEDEN
MNMARK
.-.. . . . .... . -
BELGIUM
SWITZERLAND
13ayuI FOR GERMANY
BELGlW
SWITZERLAND
AUSTRIA
BRllSH FOR SPAIN
(RWN FDR ITALV
SWITZERLAND
FI*6H a FINLAND
Cautions-l
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Q7606M Optical Chirpform Test SetOperationManual
Cautions of Q7606AIB
Put a label on the place shown in the followingillustrationaccording to the usefullanguagein your country.
it on here
Q7606AFront View
/
/
When the fiber is not inserted, the laser radiation
fromthe insideQ7606A.
Internalherspecifications
Wavelength:
1.55 pm
Power: 8 dBm or less
2. Maintenance
CAUTION: No operatorserviceableparts
inside. Servicing to beprovided by trained individuals.
For the maintenance or the inspection of Q7606AIB's inside or the replacement of various parts other than
fuse,contactyour nearest ADVANTESTdealer.
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Q7606AIB ODtical ChirpformTest Set Operation Manual
PREFACE
To use the Q7606AIB safely, observethe followingprecautions:
(1) The maximum allowable incident Light power of the Q7606AIB is +lOdBm. If optical power
exceeding +10dBm isgiven
to the Q7606AIB. it may give the 47606- unrecoverable damages.
(2)
The Q7606AIB internallyuses high voltages. Toavoid elecuic shocks,donot open the framecover
when the power supply is on.
(3)
In this manual, the keys are expressed under the followingconventions:
IM-MONITOR Q7606- panel keys
[CPROGRAM(RUN)II R3753165167 panel keys
WAD R3753165167 softwarekeys (keysused in screen softwaremenu)
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07606- Optical Chirpform Test Set Operation Manual
TABLE OF CONTENTS
1 OVERVIEW ......................................................................................................
1.1 Product Overview ................................................................................................
1.2 Configurationof the Q7606A/B ..........................................................................
1.3 Accessories ..........................................................................................................
. .
1.4 Environment Cond~hons ......................................................................................
1.5 Preparing to Power ON .......................................................................................
1.5.1 ConnectingPower Cableto the Q7606A/B
..................................................
1.5.2 Power Cable ..................................................................................................
1.5.3 Fuse ...............................................................................................................
1.6 Cleaning, Transportation,and Storage
................................................................
1.6.1 Cleaning Connectors .....................................................................................
1.6.2 Cleaningthe Q7606A/B ................................................................................
1.6.3 Transportingthe Q7606- .........................................................................
1.6.4 Storingthe Q7606A/B ..................................................................................
1.7 Optional SoftwareProductsfor Measurement Support
.......................................
...........................................
1.7.1 Cautions for Using Optional Software Products
1.7.2 Optical ChupfomMeasurement Software
(an extra-cost option) ...............
2 PANEL DESCRIPTIONS ..............................................................................
2.1 Front Panel ...........................................................................................................
............................................................................................................ 2.2 Rear Panel
3 BASIC OPERATION GUIDELINE (MEASURING DYNAMIC CHIRP
CHARACTERISTICS)
3.1 Overview .............................................................................................................
3.2 Configuringthe Measurement System ................................................................
3.3 Measurement .......................................................................................................
3.3.1 Settingthe Sampling Oscilloscope
...............................................................
4 GPIB ....................................................................................................................
4.1 Overview .............................................................................................................
........................................................................................ 4.1.1 Overview of GPIB
..........................................
4.1.2 GPIB and the Q7606AIB'sGPIB Specifications
4.1.3 InterfaceFunctions
.......................................................................................
..................................................................
4.1.4 Connecting ComponentDevices
4.1.5 Description of the Q7606AlBPanel Controls Relating to GPIB
..................
4.2 ServiceRequest ...................................................................................................
............................................................................................
4.3 GPIB TalkerFormat
4.4 GPIB Commands
.................................................................................................
..........................................................
4.5 Reading the StatusData Set in Q7606AlB
.................................................................................................
4.6 Sample Programs
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Q7606AIB Optical ChirpfonnTest SetOperation Manual
Table ofContents
..........................................................................
4.6.1 Settingthe Q7606AlB
.....................
4.6.2
Reading StatusData Set in Q7606AlB and CorrectionData
4.6.3 StandardModule ...........................................................................................
5 TROUBLESHOOTING .................................................................................
6 OPERATING PRINCIPLES .........................................................................
. .
....
.......................................................................................
6.1 Operating hclples :
6.1.1
Using the Mach-ZehnderInterferometeras a Lightwave Frequency
. .
................................................................................................ Discnmnator
6.1.2
Separating FM and IM Components .............................................................
...........................
6.1.3
InterferometerCharacteristicsand Q7606m Operations
6.2 Block Diagram .....................................................................................................
7 SPECIFICATIONS ..........................................................................................
7.1 Q7606AB Major Specifications .........................................................................
................................................................................
7.1.1 Measurement Functions
7.1.2 Input Characteristics .....................................................................................
..........................................................................
7.1.3 Input/Output Specifications
..................................................................................
7.1.4 General Specifications
APPENDIX ................................................................................................................
A . 1 Glossary ...............................................................................................................
DIMENSIONAL OUTLINEDRAWING ................................................ EXT- 1
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Q7606AB OpticalChirpfom Test SetOperation Manual
LIST OF ILLUSTRATIONS
...................................................................................................................... Power Cable
...................................................................................................................... Fuse Holder
ConnectorCleaning
(1) .....................................................................................................
Connector Cleaning (2) .....................................................................................................
Connector Cleaning (3) .....................................................................................................
ConnectorCleaning (4) .....................................................................................................
........................................................................................................................
Fmnt Panel
Rear Panel
.........................................................................................................................
MeasurementSystemConfiguration ................................................................................
GPIB Bus Line Configuration ..........................................................................................
GPIB ConnectorPin Assignments ..................................................................................
LightwavMe Frequency-discriminateCharacteristicsof the Mach-Zehnder Interferometer
SwitchingMeasurementPoints of the Mach-ZehnderInterferometer
...
LightwaveFrequencyDiscnnunator ................................................................................
InterferometerCharacteristicsMeasured by RESET ........................................................
InterferometerCharacteristicsMeasured by IM+M .......................................................
InterferometerCharacteristicsMeasured by IM-FM ........................................................
InterferometerCharacteristicsMeasured by IM-MONITOR ...........................................
Q7606AlS Block Diagram ...............................................................................................
InterferenceCharacteristicsand FSR of the Mach-ZehnderInterfemmeter ....................
TypicalMach-ZehnderInterferometerConfiguration ......................................................
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Q7606A/B Optical ChqfomTest SetOperation Manual
LIST OF TABLES
No . Title
. .
1-1 Standard Accessones hst .................................................................................................
1-2 Power Cable Options ........................................................................................................
4- 1 GPIB Interface Functions ................... .. ..........................................................................
Page
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Q7606AIB OpticalChirpformTest Set Operaton Manual
1.1 ProductOverview
1 OVERVIEW
1.1 Product Overview
The Q7606AIB is a lightwavemodulationtest set, used together with a digital samplingoscilloscope,to sep
arately measure and evaluate the chq (frequency-modulated/FM) and intensity-modulated (IM) compo-
nents of incidentlaser light.
The
Q7606AB containstwo sets of fiber-type Mach-Zehnder interferometersand their control circuits.
The
Q7606AIB can selectivelyoutput the sumof ordifferencebetweenthe frequency-modulatediFMand IM
componentsof the modulated incidentlight by switchingthemeasurementmode. The sum(IM+FM)and dif-
ference (IM-FM) data
are processed by the digital sampling oscilloscopeand the personal computerto sep
aratethe chirpFM and IM componentsfrom each other,thus makingitpossibleto evaluatethe time-domain
characteristics.
Features:
(1)
The Q7606A/B makes it possible to separate the frequency-modulated/FMand IM components
from
each other easily.
(2)
The Q7606AIB isequipped with two sets of built-inand fiber-type Mach-Zehnderinterferometer.
(3)
The Q7606m is optimal for evaluatingthe chirp characteristicsof an optical modulator (such as
an LN or EA modulator).
(4)
The Q7606A/B is alsoavailableasa lightwavefrequency discriminatorforthe lightwavefrequency
domain.
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Q7606AiB Optical ChiformTest Set OperationManual
1.2 Configurationof the Q7606AiB
1.2 Configuration of the Q7606NB
Measuring the dynamic chirp characteristics(time-domain characteristics of chi)using the 47606- re-
quires an
O/E converter, a digital sampling oscilloscope, and a personal computer. Softwarefor measuring
and evaluatingthe dynamicchirpcharacteristics is optionally available.
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47606- Optical ChirpformTest Set Operation Manual
1.3 Accessories
1.3 Accessories
Table 1-1 lists the standard accessories shipped with the Q7606NB. If any of the accessoriesare damaged
ormissing,contactthenearest ADVANTESTField Officeorrepresentative.Ordernew accessoriesby name.
'lhble 1-1 Standard Accessories List
I GPIB connection cable )408JE-IP5 I 1 I I
Name of accessory
I Fuses 1 21802.5 1 2 1 AC250V12.5A I
Power cable * 1 I
5pename
Q7606NB Operation manual
* 1: Depends on the type specifiedwhen purchasing the Q7606NB.
Thereare 11types of power cables available (seeTable 1-2).
You can order power cablesby model number or by option number.
Quantity
CLASS
1 LASER PRODUCT label
Remarks
I
EQ7606NB
MNS-E1068A
I English
1 Put it on Q7606Aonly.
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Q7606AIBOptical ChiiformTest SetOperation Manual
1.3 Accessories
Table 1-2 Power Cable Options
Standards Rating, color Model number
Plug configuration and length (Option number)
I 1 I
1 JIS: Japan 1125Vat7A 1 Straight: A01402
I I I
I UL: United Statesof America 1 125V at 7 A I Straight: A01403
Law onElectrical Appliances Black 2 m (6ft)
CSA: Canada
(Option 97)
1 ?:6 ftj Angled: A01415
Angled: A01412
CEE: Em~e
DEMKO: Denmark
NEMKO:
Noway
VDE: Germany
KEMA: The Netherlands
CEBEC: Belgium
OVE: Austria
FIMKO: Finland
SEMKO: Sweden
SEV: Switzerland
I I I
( SAA: Australia, New Zealand 1 250 V at 6 A 1 Straight: A01406
Black
2m(6ft) (Option95)
Angled: A01413
250Vat6A
Gray
2m(6ft)
250Vat6A
Straight: A01404
(Option
96)
Angled: A01414
Straight: A01405
Gray
2 m (6 ft) (Option
98)
A~~I~~: -----.---
BS: United Kingdom 250Vat6A
Black
2 m (6 St)
Straight: A01407
(Option
99)
Angled: A01417
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07606- Ootical ChhformTest SetbrationManual
1.4 Environment Conditions
1.4 Environment Conditions
(1)
Sincethe Q7606A/B is a precision measurement device, avoid installing it in a position where it is
exposedto dust,
dim sunlight,corrosivegas, or vibration. Be sure to use the Q7606A/B in condi-
tions of an ambient temperature of 10°Cto 40°C and a relative humidity of
85% or less.
(2)
Although the 47606- has been designed to be durableagainstAC linenoise, careshould be taken
to minimizetheAC noise atthe site where the Q7606- isinstalled. If necessary,use a noise elim-
inationfilter..
(3)
The 47606- can be used safely under the followingconditions:
Altitudeof up to 2000m
InstallationCategories I1
Pollution Degree 2
(4)
Never block these areasas the resultinginternal temperaturerise will affect measurementaccuracy.
Avoid operationin the following areas. Use a noise cut filter when there is a large
amountof noise riding on the power line.
G Line Filter
Keep the rear panel lOcm away
from the wall
Front
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1.5 Preparing to Power ON
1.5 Preparing to Power ON
15.1
ConnectingPower Cabk to the Q7606AIB
Make sure that the POWER switch on the Q7606AIB hntpanel is set to OFF, and then connect the at-
tached power cableto the AC LINE connector on the rear panel of the Q7606A5. The permitted power
voltagerange is
90 to 250 V, and the permitted power frequencyrange is 48 to 66 Hz.
1.5.2 Power Cable
CAUTION:
1. Use a power cablenuedforthevoulrgeinquestha Be sm bowemlouseapowerc& cowfom'~~g to We@
standads ofyownation when using aproduct
mmw (see T& I-2k
2. Be sure loplug lhe power cable into an elechical outkt which has a s&ty ground Um'dGrounding will
be &fadifrou use an exiension cord whichdose MI includea wfe@ground UmlllUI(aL
3. lbn the MAIN POWER switch (onthe rear panel) and the POWER wileh (on the fronipanel) offprior to
connecting thepower cable.
able
To
AC power outlet Groundpin
3-pinpower
CI
Figure 1-1 Power Cable
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