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Page
 Using the Attenuator
Setting Up the Hardware Setting Up the Attenuation
Example, Setting the Calibration
Configuring the Hardware
 Configuring the Hardware Setting Up the Software
Example, Setting a Return Loss
Setting the Gpib Address
Automatic Sweep
 Selecting the Through-Power Mode
Setting the Display Brightness
Selecting the Setting used at Power-On
Selecting the Shutter State at Power On
 Units Command Summary Common Commands
Some Notes about Programming and Syntax Diagram
Conventions
 DISPlay Commands 104
INPut Commands 106
OUTPut Commands 110
STATus Commands 114
 User Calibration Commands 123
Switching on the Attenuator 149
Temperature 148 Humidity Instrument Positioning and Cooling
Operating and Storage Environment 148
 Definition of Terms 165 Specifications 167
Other Specifications 171 Declaration of Conformity 172
Monitor Output 149 Optical Output 150
Gpib Interface 150
 Polarization Dependent Loss PDL Optional
Preserving Connectors 256
Polarization Dependant Loss Test Mueller method 192
 How to clean connectors 258
How to clean connector adapters 259
How to clean connector interfaces 260
How to clean bare fiber adapters 261
 How to clean instruments with a recessed lens inter
How to clean optical devices which are sensitive to me
How to clean metal filters or attenuator gratings
Additional Cleaning Information 268
 276
 Table of Contents
 List of Figures
 Figure D-6
 List of Tables
 List of Tables
 Getting Started
 Getting Started
 Using the Attenuator
Using the Modify Keys
Using the Attenuator
Attenuator Keys
 Making an Automatic Sweep
Making an Attenuation Sweep
Making an Attenuation Sweep
 Manual Sweep
Manual Sweep
Parameters for an Automatic Sweep
 Using your Attenuator as a Variable Back Reflector
Using your Attenuator as a Variable Back
Reflector
 Using the Through-Power Mode
Using the Through-Power Mode
Selecting the Wavelength Calibration and Its Function
 Selecting the Wavelength Calibration and Its Function
 Using the Attenuator
 Using the Attenuator
 Setting Up the Hardware
Setting Up the Hardware
 Setting Up the Attenuation
Setting Up the Attenuation
Entering the Attenuation Factor
Attenuation Factor on the Display
 Resetting the Attenuation Factor
Entering a Calibration Factor
Calibration Factor on the Display
Editing the Calibration Factor
 Entering the Wavelength
 Resetting the Wavelength
Wavelength on the Display
 Example, Setting the Calibration
Example, Setting the Calibration
Hardware Configuration for Attenuation Example a
 Hardware Configuration for Attenuation Example B
Power of the source
Warmup. The multimeter needs around 20 minutes to warmup.
 Example, Setting the Calibration
 Making an Attenuation Sweep
 Making an Attenuation Sweep
 Configuring the Hardware
Configuring the Hardware
 Automatic Sweep
Setting Up an Automatic Sweep
Automatic Sweep
 Editing the Parameters
Starting the Setting Up
Selecting the Automatic Sweep Application
 Resetting the Parameters
Executing the Automatic Sweep
 Setting Up a Manual Sweep
Repeating the Sweep
Restarting the Sweep
Running the Automatic Sweep
 Editing the Stop Parameter
 Executing the Manual Sweep
Running the Manual Sweep
 Resetting, or store their setting for later recall
Example, an Automatic Attenuation Sweep
Changing the Attenuation in a Manual Sweep
Example, an Automatic Attenuation Sweep
 Example, an Automatic Attenuation Sweep
 Example, an Automatic Attenuation Sweep
 Using your Attenuator as a Variable Back Reflector
 Using your Attenuator as a Variable Back Reflector
 Using your Attenuator as a Variable Back Reflector
 Editing the Setup
Setting Up the Software
Setting Up the Software
 Executing the Back Reflector Application
Editing the Value for the Reference Return Loss
 Example, Setting a Return Loss
Example, Setting a Return Loss
 Hardware Configuration for Variable Return Loss
 Example, Setting a Return Loss
 Setting Up the System
 Setting Up the System
 Resetting the Gpib Address
Setting the Gpib Address
Setting the Gpib Address
 Resetting the Function of the Wavelength Calibration Data
Setting the Function of the Wavelength Calibration
Lambdcal Indicator on the Display
 Resetting the Wavelength Calibration Data Set
If you are using the instrument in an environment where
Temperature changes, you should not use the user wavelength
Usercal Indicator on the Display
 Selecting the Through-Power Mode
Selecting the Through-Power Mode
Display in Through-Power Mode
 Setting the Display Brightness
Deselecting the Through-Power Mode
Resetting the Through-Power Mode
Resetting the Display Brightness
 Selecting the Setting used at Power-On
Resetting the Power-On Setting
Selecting the Setting used at Power-On
Locking Out ENB/DIS
 Selecting the Shutter State at Power On
Resetting the ENB/DIS Lock Out
Resetting the Shutter State at Power On
Selecting the Shutter State at Power On
 Resetting the Display Resolution
Setting the Display Resolution
Setting the Display Resolution
 Storing and Recalling Settings
 Storing and Recalling Settings
 Storing the Setting
Recalling a Setting
Resetting the Instrument
Recalling a User Setting
 Recalling a Setting
 Programming the Attenuator
 Programming Attenuator
 Gpib Interface
Gpib Interface
 Gpib Capabilities Mnemonic Function
AH1
 How the Attenuator Receives and Transmits Messages
Returning the Instrument to Local Control
How the Input Queue Works
 Error Queue
Clearing the Input Queue
Output Queue
How the Attenuator Receives and Transmits Messages
 Some Notes about Programming and Syntax Diagram Conventions
Some Notes about Programming and Syntax Diagram Conventions
Short Form and Long Form
 Command and Query Syntax
String
Value
Wsp
 Remote Commands
 Remote Commands
 Command Summary
Units and Allowed Mnemonics Default
Common Command Summary
Units
 Command Summary
Command List
 ValueMINDE DB
 Value 32768 32767
 Common Commands
Common Commands
Common Status Information
 SRQ, The Service Request
Common Status Registers
 Syntax
Definition
 Event Status Enable Register
Example
 Standard Event Status Register
Bits Mnemonics BIT Value
 OPC
 RCL
 Reset State Default Setting Parameter Reset Value
SAV
 Service Request Enable Register
SRE
 No T EBit 6 cannot be masked
Status Byte Register
 TST?
Self Test Results
 DISPlay Commands
DISPlay Commands
DISPlayBRIGhtness
DISPlayBRIGhtness?
 DISPlayENABle?
DISPlayENABle
Description
 INPut Commands
INPut Commands
INPutATTenuation
INPutATTenuation?
 INPutLCMode?
INPutLCMode
INPutOFFSet
 INPutOFFSet?
INPutOFFSetDISPlay
 INPutWAVelength
 OUTPut Commands
OUTPut Commands
INPutWAVelength?
OUTPutAPMode
 Using any of the INPutATTenuation commands or queries, or
Any of the INPutOFFSet commands or queries, switches
Absolute power mode off automatically
OUTPutAPMode?
 OUTPutPOWer
 OUTPutSTATe
OUTPutPOWer?
OUTPutSTATe?
 STATus Commands
OUTPutSTATeAPOWeron
OUTPutSTATeAPOWeron?
STATus Commands
 STATus Commands
 STATusOPERationCONDition?
Status Registers
 STATusOPERationENABle?
STATusOPERationENABle
STATusOPERationEVENt?
 STATusOPERationNTRansition?
STATusOPERationNTRansition
STATusOPERationPTRansition
 STATusOPERationPTRansition?
STATusQUEStionableENABle
STATusQUEStionableCONDition?
 STATusQUEStionableEVENt?
STATusQUEStionableENABle?
STATusQUEStionableNTRansition
 STATusQUEStionablePTRansition
STATusQUEStionableNTRansition?
STATusQUEStionablePTRansition?
 SYSTem Commands
STATusPRESet
SYSTemERRor?
SYSTem Commands
 User Calibration Commands
User Calibration Commands
Entering the User Calibration Data
 Power = -Power
UCALibrationSTARt
 UCALibrationSTARt?
UCALibrationSTATe
 UCALibrationSTOP
UCALibrationSTATe?
UCALibrationVALue
 UCALibrationVALue?
 128
 Programming Examples
 Programming Examples
 Example 1 Checking Communication
Function
Listing
Example 1 Checking Communication
 Example 2 Status Registers and Queues
Example 2 Status Registers and Queues
 133
 134
 Setting Up the Equipment
Example 3 Measuring and Including the Insertion Loss
Requirements
Example 3 Measuring and Including the Insertion Loss
 Include the attenuator
 137
 138
 Example 4 Running an Attenuation Sweep
Example 4 Running an Attenuation Sweep
 140
 Installation
 Installation
 Safety Considerations
Safety Considerations
Initial Inspection
 Line Power Cable
AC Line Power Supply Requirements
AC Line Power Supply Requirements
 Figure A-2 Rear Panel Markings
 Replacing the Battery
Replacing the Fuse
 Figure A-3 Releasing the Fuse Holder
 Temperature
Operating and Storage Environment
Humidity
Instrument Positioning and Cooling
 Switching on the Attenuator
Switching on the Attenuator
Monitor Output
 Disabling the Optical Output
Optical Output
Optical Output
 Connector
Figure A-6
 Claims and Repackaging
Gpib Logic Levels
Return Shipments to Agilent Technologies
Claims and Repackaging
 Claims and Repackaging
 154
 Accessories
 Accessories
 Instrument and Options
Gpib Cables and Adapters
Instrument and Options
Table B-1 Mainframe Description Model No
 Straight Contact Connector
Connector Interfaces and Other Accessories
Connector Interfaces and Other Accessories
 Accessories
 Option 201, Angled Contact Connector
Figure B-2 Angled Contact Connector Configuration
 Table B-3 Connector Interface Description AgilentModel No
 162
 Specifications
 Specifications
 Definition of Terms
Definition of Terms
 Repeatability
Polarization mode dispersion
Return loss
 Specifications
Specifications
 Table C-2 Monitor Output Options
Monitor Output typ
 Operating Modes
Supplementary Performance Characteristics
Table C-3 Multimode Options Wavelength Range
 General
Environmental
 Other Specifications
Power
Other Specifications
Acoustic Noise Emission Geräuschemissionswerte
 Declaration of Conformity
Declaration of Conformity
 Performance Tests
 Performance Tests
 Equipment Required
Equipment Required
 176
 Instrument Specification
Test Record
Test Failure
Test Record
 Performance Test
Performance Test
 Total Insertion Loss Test
Specifications
Typ
 Figure D-2 Total Insertion Loss Test Setup 1, Options 201
Figure D-3 Total Insertion Loss Test Setup 1, Option
 Figure D-5 Total Insertion Loss Test Setup 2, Options 201
 Specifications Agilent 8156A
II. Linearity/Attenuation Accuracy Test
 To 0.00 dB
Measurement to prevent changes of state of polarization
 III. Attenuation Repeatability Test
 Figure D-7 Return Loss Test Setup 1, Options 100, 101
IV. Return Loss Test Options 100, 101,
 No T E
 Figure D-8 Return Loss Test Setup 2, Options 100
Options 201
 Figure D-10 Return Loss Test Setup 1, Options 201
 Figure D-11 Return Loss Test Setup 2, Option
Monitor output is terminated
 Figure D-12 Return Loss Test Setup 2, Option
 Polarization Dependent Loss PDL Optional
V. Polarization Dependent Loss PDL Optional
Table D-2 Equipment for the PDL test
 Figure D-13 PDL Test Setup 1 Reference Measurement
Polarization Dependant Loss Test Mueller method
 Isolator must not move during and between all measurements
Until these are finished
 Set plates for Linear Horizontal polarization
 Polarization Dependent Loss PDL Optional
 Linear vertical Linear diagonal RH circular
Measure the Reference Power
Polarization
 Polarization Dependent Loss PDL Optional
 Set the 8156A Attenuator DUT to 0dB using the modify keys
Head must not move until the measurements are finished
 Polarization Dependent Loss PDL Optional
 Table D-3 Performance Test Agilent 8156A
 Performance Test for the Agilent 8156A
 Polarization Dependent Loss PDL Optional
 Performance Test for the Agilent 8156A Option
Result
 204
 01dB + 0.01dB
 206
 207
 208
 Polarization Dependent Loss PDL Optional
 210
 211
 Input 40dB
 213
 214
 215
 Polarization Dependent Loss PDL Optional
 217
 218
 219
 220
 10.9dB
 222
 Polarization Dependent Loss PDL Optional
 224
 225
 Input 55dB
 227
 228
 229
 Polarization Dependent Loss PDL Optional
 231
 232
 233
 234
 235
 236
 Polarization Dependent Loss PDL Optional
 238
 239
 01dB + 0.01dB 240
 Test Facility
Special Notes
 Polarization Dependent Loss Test
 Mueller Coefficients
 Minimum and maximum transmission
 Option Wavelength 1550nm nominal
 Polarization Dependent Loss PDL Optional
 Cleaning Information
 Cleaning Information
Cleaning Instructions for this Instrument
 Why is it important to clean optical devices ?
Safety Precautions
Safety Precautions
 Standard Cleaning Equipment
What do I need for proper cleaning?
What do I need for proper cleaning?
 Isopropyl alcohol
Dust and shutter caps
Cotton swabs
 Soft tissues
Pipe cleaner
 Additional Cleaning Equipment
Compressed air
 Ultrasonic bath
Microscope with a magnification range about 50X up to
Warm water and liquid soap
 Polymer film
Premoistened cleaning wipes
Infrared Sensor Card
 Preserving Connectors
Preserving Connectors
Making Connections
Dust Caps and Shutter Caps
 Cleaning Instrument Housings
Which Cleaning Procedure should I use ?
Cleaning Instrument Housings
Light dirt
 How to clean connectors
Preferred Procedure
Procedure for Stubborn Dirt
How to clean connectors
 An Alternative Procedure
How to clean connector adapters
How to clean connector adapters
 How to clean connector interfaces
How to clean connector interfaces
 How to clean bare fiber adapters
How to clean bare fiber adapters
 How to clean lenses
How to clean lenses
 How to clean instruments with a fixed connector interface
How to clean instruments with a fixed connector interface
System
 How to clean instruments with a physical contact interface
How to clean instruments with an optical glass plate
How to clean instruments with an optical glass plate
 How to clean instruments with a recessed
How to clean instruments with a recessed lens interface
Agilent Technologies 81633A and 81634A Power Sensors do not
Lens interface
 Preferred Procedure
 Alternative Procedure
 Additional Cleaning Information
How to clean metal filters or attenuator gratings
How to clean metal filters or attenuator gratings
 How to clean large area lenses and mirrors
How to clean bare fiber ends
Additional Cleaning Information
 Alternative Procedure a
Damage your device
It, because they can scratch and damage your device
Remains
 Other Cleaning Hints
Alternative Procedure B
Lens cleaning papers
Other Cleaning Hints
 Cleaning the housing and the mainframe
 Error messages
 Error Messages
 Display Messages
Display Messages
Hexadecimal
Bits Mnemonics Value
 Gpib Messages
 Command header error
Header separator error
Numeric data error
Parameter not allowed
 Suffix error
Character data error
Invalid character in number
Exponent too large
 String data error
Block data error
Invalid character data
Character data too long
 Execution Errors
Execution error
Settings lost due to rtl
Parameter error
 Hardware error
Device-Specific Errors
Device-specific error
System error
 Configuration memory lost
Query Errors
Query error
Save/recall memory lost
 Instrument Specific Errors
Query Deadlocked
Query Unterminated after indefinite response
201
 284
 Symbols
Index
 HP-IB
 Lockout
 Resolut
 Thrupowr