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Agilent Technologies 8156A manual 137

Models: 8156A

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Programming Examples

Example 3 - Measuring and Including the Insertion Loss

Listing

10!-----------------------------------------

20!

30! Programming Example 3

40!

50! Measuring the Insertion Loss and using it as a Cal factor

60!

70!-----------------------------------------

80!

90! Definitions and Initializations

100!

110Att=728

120Mm=722

130!

140OUTPUT Mm;"*rst;*cls"

150OUTPUT Att;"*rst;*cls"

160!

170! Setup the instruments, with the output of the source connected

180! to the input of the sensor and wait for the ENTER key to

190! be pressed before continuing

200!

210CLEAR SCREEN

220PRINT TABXY(4,17);""

230INPUT "Connect the Source to the Sensor and then press ENTER",Inp$

240!

250! Set the sensor wavelength to that of the source

260!

270OUTPUT Mm;"sour2:pow:wave?"

280ENTER Mm;Wvl

290OUTPUT Mm;"sens1:pow:wave ";Wvl

300!

310! Activate the source

320!

330OUTPUT Mm;"sour2:pow:stat on"

340!

350! Set the instrument to measure in dB, and take the current power

360! as the reference.

370!

380OUTPUT Mm;"sens1:pow:ref:stat on"

390WAIT 2

Let everything settle before making a reading

400OUTPUT Mm;"sens1:pow:ref:disp"

410!

420! Switch off the source and prompt for the next hardware se

tup

430!

440OUTPUT Mm;"sour2:pow:stat off"

450PRINT TABXY(4,17);""

460INPUT "Connect the Attenuator into the setup and press ENTE R to continue:,Inp$

470!

480! Set the wavelength on the attenuator

490!

500OUTPUT Att;"inp:wave ";Wvl

510!

520! Switch on the source, enable the attenuator

137

Image 137

Agilent Technologies 8156A manual 137

Contents

3URJUDPPLQJ*XLGH Warranty 6DIHW\6XPPDU\ 2127235$7,1$13/26,9$70263+5 2WKHU6DIHW\,QIRUPDWLRQ DUQLQJVDQG&DXWLRQV 6DIHW\6\PEROV $ERXW7KLV0DQXDO 6HUYLFHDQG6XSSRUW Page Setting Up the Hardware Setting Up the Attenuation Using the AttenuatorExample, Setting the Calibration Configuring the HardwareExample, Setting a Return Loss Configuring the Hardware Setting Up the SoftwareSetting the Gpib Address Automatic SweepSetting the Display Brightness Selecting the Through-Power ModeSelecting the Setting used at Power-On Selecting the Shutter State at Power OnConventions Some Notes about Programming and Syntax DiagramUnits Command Summary Common Commands INPut Commands 106 DISPlay Commands 104OUTPut Commands 110 STATus Commands 114Switching on the Attenuator 149 User Calibration Commands 123Temperature 148 Humidity Instrument Positioning and Cooling Operating and Storage Environment 148Other Specifications 171 Declaration of Conformity 172 Definition of Terms 165 Specifications 167Monitor Output 149 Optical Output 150 Gpib Interface 150Polarization Dependant Loss Test Mueller method 192 Preserving Connectors 256Polarization Dependent Loss PDL Optional How to clean connector adapters 259 How to clean connectors 258How to clean connector interfaces 260 How to clean bare fiber adapters 261How to clean optical devices which are sensitive to me How to clean instruments with a recessed lens interHow to clean metal filters or attenuator gratings Additional Cleaning Information 268276 Table of Contents List of Figures Figure D-6 List of Tables List of Tables Getting Started Getting Started Using the Modify Keys Using the AttenuatorUsing the Attenuator Attenuator KeysMaking an Attenuation Sweep Making an Attenuation SweepMaking an Automatic Sweep Parameters for an Automatic Sweep Manual SweepManual Sweep Reflector Using your Attenuator as a Variable BackUsing your Attenuator as a Variable Back Reflector Selecting the Wavelength Calibration and Its Function Using the Through-Power ModeUsing the Through-Power Mode Selecting the Wavelength Calibration and Its Function Using the Attenuator Using the Attenuator Setting Up the Hardware Setting Up the HardwareSetting Up the Attenuation Setting Up the AttenuationEntering the Attenuation Factor Attenuation Factor on the DisplayEntering a Calibration Factor Resetting the Attenuation FactorCalibration Factor on the Display Editing the Calibration FactorEntering the Wavelength Wavelength on the Display Resetting the WavelengthHardware Configuration for Attenuation Example a Example, Setting the CalibrationExample, Setting the Calibration Warmup. The multimeter needs around 20 minutes to warmup. Power of the sourceHardware Configuration for Attenuation Example B Example, Setting the Calibration Making an Attenuation Sweep Making an Attenuation Sweep Configuring the Hardware Configuring the HardwareAutomatic Sweep Setting Up an Automatic SweepAutomatic Sweep Selecting the Automatic Sweep Application Starting the Setting UpEditing the Parameters Executing the Automatic Sweep Resetting the ParametersRepeating the Sweep Setting Up a Manual SweepRestarting the Sweep Running the Automatic SweepEditing the Stop Parameter Starting the Setting UpRunning the Manual Sweep Executing the Manual SweepExample, an Automatic Attenuation Sweep Resetting, or store their setting for later recallChanging the Attenuation in a Manual Sweep Example, an Automatic Attenuation SweepExample, 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 Setting Up the Software Setting Up the SoftwareEditing the Setup Editing the Value for the Reference Return Loss Executing the Back Reflector ApplicationExample, Setting a Return Loss Example, Setting a Return LossResetting, or store their setting for later recall Hardware Configuration for Variable Return LossExample, Setting a Return Loss Setting Up the System Setting Up the System Setting the Gpib Address Setting the Gpib AddressResetting the Gpib Address Lambdcal Indicator on the Display Setting the Function of the Wavelength CalibrationResetting the Function of the Wavelength Calibration Data If you are using the instrument in an environment where Resetting the Wavelength Calibration Data SetTemperature changes, you should not use the user wavelength Usercal Indicator on the DisplayDisplay in Through-Power Mode Selecting the Through-Power ModeSelecting the Through-Power Mode Deselecting the Through-Power Mode Setting the Display BrightnessResetting the Through-Power Mode Resetting the Display BrightnessResetting the Power-On Setting Selecting the Setting used at Power-OnSelecting the Setting used at Power-On Locking Out ENB/DISResetting the ENB/DIS Lock Out Selecting the Shutter State at Power OnResetting the Shutter State at Power On Selecting the Shutter State at Power OnSetting the Display Resolution Setting the Display ResolutionResetting the Display Resolution Storing and Recalling Settings Storing and Recalling Settings Recalling a Setting Storing the SettingResetting the Instrument Recalling a User SettingRecalling a Setting Programming the Attenuator Programming Attenuator Gpib Interface Gpib InterfaceAH1 Gpib Capabilities Mnemonic FunctionHow the Input Queue Works Returning the Instrument to Local ControlHow the Attenuator Receives and Transmits Messages Clearing the Input Queue Error QueueOutput Queue How the Attenuator Receives and Transmits MessagesShort Form and Long Form Some Notes about Programming and Syntax Diagram ConventionsSome Notes about Programming and Syntax Diagram Conventions String Command and Query SyntaxValue WspRemote Commands Remote Commands Units and Allowed Mnemonics Default Command SummaryCommon Command Summary UnitsCommand List Command SummaryValueMINDE DB Value 32768 32767 Common Status Information Common CommandsCommon Commands Common Status Registers SRQ, The Service RequestDefinition SyntaxExample Event Status Enable RegisterBits Mnemonics BIT Value Standard Event Status RegisterOPC RCL SAV Reset State Default Setting Parameter Reset ValueSRE Service Request Enable RegisterStatus Byte Register No T EBit 6 cannot be maskedSelf Test Results TST?DISPlay Commands DISPlay CommandsDISPlayBRIGhtness DISPlayBRIGhtness?Description DISPlayENABleDISPlayENABle? INPut Commands INPut CommandsINPutATTenuation INPutATTenuation?INPutOFFSet INPutLCModeINPutLCMode? INPutOFFSetDISPlay INPutOFFSet?INPutWAVelength OUTPut Commands OUTPut CommandsINPutWAVelength? OUTPutAPModeAny of the INPutOFFSet commands or queries, switches Using any of the INPutATTenuation commands or queries, orAbsolute power mode off automatically OUTPutAPMode?OUTPutPOWer OUTPutSTATe? OUTPutPOWer?OUTPutSTATe OUTPutSTATeAPOWeron STATus CommandsOUTPutSTATeAPOWeron? STATus CommandsSTATus Commands Status Registers STATusOPERationCONDition?STATusOPERationEVENt? STATusOPERationENABleSTATusOPERationENABle? STATusOPERationPTRansition STATusOPERationNTRansitionSTATusOPERationNTRansition? STATusQUEStionableCONDition? STATusQUEStionableENABleSTATusOPERationPTRansition? STATusQUEStionableNTRansition STATusQUEStionableENABle?STATusQUEStionableEVENt? STATusQUEStionablePTRansition? STATusQUEStionableNTRansition?STATusQUEStionablePTRansition STATusPRESet SYSTem CommandsSYSTemERRor? SYSTem CommandsEntering the User Calibration Data User Calibration CommandsUser Calibration Commands UCALibrationSTARt Power = -PowerUCALibrationSTATe UCALibrationSTARt?UCALibrationVALue UCALibrationSTATe?UCALibrationSTOP UCALibrationVALue? 128 Programming Examples Programming Examples Function Example 1 Checking CommunicationListing Example 1 Checking CommunicationExample 2 Status Registers and Queues Example 2 Status Registers and Queues133 134 Example 3 Measuring and Including the Insertion Loss Setting Up the EquipmentRequirements Example 3 Measuring and Including the Insertion LossInclude the attenuator 137 138 Example 4 Running an Attenuation Sweep Example 4 Running an Attenuation Sweep140 Installation Installation Initial Inspection Safety ConsiderationsSafety Considerations AC Line Power Supply Requirements AC Line Power Supply RequirementsLine Power Cable Figure A-2 Rear Panel Markings Replacing the Fuse Replacing the BatteryFigure A-3 Releasing the Fuse Holder Operating and Storage Environment TemperatureHumidity Instrument Positioning and CoolingMonitor Output Switching on the AttenuatorSwitching on the Attenuator Optical Output Optical OutputDisabling the Optical Output Figure A-6 ConnectorGpib Logic Levels Claims and RepackagingReturn Shipments to Agilent Technologies Claims and RepackagingClaims and Repackaging 154 Accessories Accessories Gpib Cables and Adapters Instrument and OptionsInstrument and Options Table B-1 Mainframe Description Model NoConnector Interfaces and Other Accessories Connector Interfaces and Other AccessoriesStraight Contact Connector Accessories Figure B-2 Angled Contact Connector Configuration Option 201, Angled Contact ConnectorTable B-3 Connector Interface Description AgilentModel No 162 Specifications Specifications Definition of Terms Definition of TermsReturn loss Polarization mode dispersionRepeatability Specifications SpecificationsMonitor Output typ Table C-2 Monitor Output OptionsTable C-3 Multimode Options Wavelength Range Supplementary Performance CharacteristicsOperating Modes Environmental GeneralPower Other SpecificationsOther Specifications Acoustic Noise Emission GeräuschemissionswerteDeclaration of Conformity Declaration of ConformityPerformance Tests Performance Tests Equipment Required Equipment Required176 Test Record Instrument SpecificationTest Failure Test RecordPerformance Test Performance TestTyp SpecificationsTotal Insertion Loss Test Figure D-3 Total Insertion Loss Test Setup 1, Option Figure D-2 Total Insertion Loss Test Setup 1, Options 201Figure D-5 Total Insertion Loss Test Setup 2, Options 201 II. Linearity/Attenuation Accuracy Test Specifications Agilent 8156AMeasurement to prevent changes of state of polarization To 0.00 dBIII. Attenuation Repeatability Test IV. Return Loss Test Options 100, 101, Figure D-7 Return Loss Test Setup 1, Options 100, 101No T E Options 201 Figure D-8 Return Loss Test Setup 2, Options 100Figure D-10 Return Loss Test Setup 1, Options 201 Monitor output is terminated Figure D-11 Return Loss Test Setup 2, OptionFigure D-12 Return Loss Test Setup 2, Option Table D-2 Equipment for the PDL test V. Polarization Dependent Loss PDL OptionalPolarization Dependent Loss PDL Optional Polarization Dependant Loss Test Mueller method Figure D-13 PDL Test Setup 1 Reference MeasurementUntil these are finished Isolator must not move during and between all measurementsSet plates for Linear Horizontal polarization Polarization Dependent Loss PDL Optional Polarization Measure the Reference PowerLinear vertical Linear diagonal RH circular Polarization Dependent Loss PDL Optional Head must not move until the measurements are finished Set the 8156A Attenuator DUT to 0dB using the modify keysPolarization Dependent Loss PDL Optional Table D-3 Performance Test Agilent 8156A Performance Test for the Agilent 8156A Polarization Dependent Loss PDL Optional Result Performance Test for the Agilent 8156A Option204 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 Special Notes Test FacilityPolarization Dependent Loss Test Polarization Mueller CoefficientsPolarization Dependent Loss Minimum and maximum transmissionOption Wavelength 1550nm nominal Polarization Dependent Loss PDL Optional Cleaning Information Cleaning Instructions for this Instrument Cleaning InformationSafety Precautions Safety PrecautionsWhy is it important to clean optical devices ? What do I need for proper cleaning? What do I need for proper cleaning?Standard Cleaning Equipment Cotton swabs Dust and shutter capsIsopropyl alcohol Pipe cleaner Soft tissuesCompressed air Additional Cleaning EquipmentWarm water and liquid soap Microscope with a magnification range about 50X up toUltrasonic bath Infrared Sensor Card Premoistened cleaning wipesPolymer film Preserving Connectors Preserving ConnectorsMaking Connections Dust Caps and Shutter CapsWhich Cleaning Procedure should I use ? Cleaning Instrument HousingsCleaning Instrument Housings Light dirtPreferred Procedure How to clean connectorsProcedure for Stubborn Dirt How to clean connectorsHow to clean connector adapters How to clean connector adaptersAn Alternative Procedure How to clean connector interfaces How to clean connector interfacesHow to clean bare fiber adapters How to clean bare fiber adaptersHow to clean lenses How to clean lensesSystem How to clean instruments with a fixed connector interfaceHow to clean instruments with a fixed connector interface How to clean instruments with an optical glass plate How to clean instruments with an optical glass plateHow to clean instruments with a physical contact interface How to clean instruments with a recessed lens interface How to clean instruments with a recessedAgilent Technologies 81633A and 81634A Power Sensors do not Lens interfacePreferred Procedure Alternative Procedure How to clean metal filters or attenuator gratings How to clean metal filters or attenuator gratingsAdditional Cleaning Information Additional Cleaning Information How to clean bare fiber endsHow to clean large area lenses and mirrors Damage your device Alternative Procedure aIt, because they can scratch and damage your device RemainsAlternative Procedure B Other Cleaning HintsLens cleaning papers Other Cleaning HintsImmersion oil and other index matching compounds Cleaning the housing and the mainframeError messages Error Messages Display Messages Display MessagesHexadecimal Bits Mnemonics ValueGpib Messages Header separator error Command header errorNumeric data error Parameter not allowedCharacter data error Suffix errorInvalid character in number Exponent too largeBlock data error String data errorInvalid character data Character data too longExecution error Execution ErrorsSettings lost due to rtl Parameter errorDevice-Specific Errors Hardware errorDevice-specific error System errorQuery Errors Configuration memory lostQuery error Save/recall memory lostQuery Deadlocked Instrument Specific ErrorsQuery Unterminated after indefinite response 201284 Index SymbolsHP-IB Lockout Resolut Thrupowr