Tektronix OA 5000 Setting a Reference Value

A QuickTour

OA 5000 Series User Manual 1 --- 5

Check the ATTENUATIONreadout and verify that it is set to 10.00 dB.

Step 12: Press RECALL 2.

Check the ATTENUATIONreadout and verify that it is set to 21.50 dB.

The SET REF button allowsyou to set a reference value for the attenuation.

Youcan then measure attenuation relative to this set value.

Step 13: Press MIN ATT.

This sets the OA 5000 to 0 dB attenuation.

Step 14: Press the SET REF button.

The word SET will appear inthe w avelengthdisplay. The reference value

can now be adjusted with the COARSE and FINE knobs.

Step 15: Adjust the reference value for ---8.00dB using the COARSE

and FINE knobs.

Step 16: Press the SET REF buttonto accept the displayedvalue. The

display willreturn tonormal.

Step 17: Press the MODEbutton.

Notice that the --R EF indicatoris lit, indicating that the attenuation

display isnow displaying attenuation relative to a reference value. The

attenuation displayshows 8.00 dB and the MIN ATT button is lit.

Step 18: Using the COARSE knob, adjust the attenuation to 10.00 dB.

Step 19: Press the MIN ATTbutton. Check that the attenuation readout

has changed to 8.00 dB and the MIN ATTbutton is lit.

The attenuation displayreads 8.00 dB, instead of0. 00 dB, because the

display isstill in reference mode and the reference value is ( ---8.00).

Pressing MINATT will set the OA 5000 to 0.00 dB only if the display is

not in reference mode orthe reference value is 0.00 dB.

Step 20: Recall the first storedsetting by pressing RECALL 1.

Remember that you set STORE 1 to 10.00 dB. Note that the attenuation

readout is 18.00 dB. The display shows the value:10.00 ---( ---8.00)=

18.00 dB.

Setting a ReferenceValue

Contents

Main Page WARRANTY Page ECDeclarationofConformity Page Welcome Page Contents A Quick Tour User Reference Programming Appendices Page List of Figures List of Tables Safety Symbols and Terms Specific Precautions Page Page Page Page Installation CAUTION Removing the OA 5000 A Quick Tour Preset the OA 5000 Storing and Recalling Settings Setting a Reference Value Settings at Power Up Page Page Operator Overview The User Reference Section Operator Overview 2 --- 2 Figure 2-1: OA 5002 Front Panel User Reference Enabling/Disabling Attenuation WARNING Page Setting Attenuation Levels Specifying the Wavele ngth Setting the Attenuation Level Page Page Setting the GPIB Address Page Setting the Reference Level Measuring Insertion Loss Approximating Signal Power Page Storing and Recalling Attenuation Levels Page Page Page Setting Up the Instrument Controllers Using the GPIB Interface GPIB Requirements Setting the GPIB Address Page Command Syntax Clearing the OA 5000 ATT:DB 10 Command and Query Structure Commands Queries Headers in QueryResponses Command Entry Abbreviating Commands Concatenating Commands Message Terminators Argument Types Block Arguments Numeric Arguments Syntax Diagrams Page Commands Common Commands and Queries Device Commands and Queries ADJusting? (Query Only) ALLev? (Query Only) Page BLRN *CAL? (Query Only) *CLS (No Query Form) DESE DISable DISPlay *ESE *ESR? (Query Only) EVEnt? (Query Only) EVMSG? (Query Only) EVQty? (Query Only) FACTORY (No Query Form) HEADer *IDN? (Query Only) *LRN?orSET? *OPC *PSC RECall (No Query Form) REFerence *RST (No Query Form) *SRE *STB? (Query Only) STORe (Store Attenuation) *TST? (Query Only) VERBOSE *WAI (No Query Form) WAVelength Status and Events Registers Status Registers The Standard Event Status Register (SESR) The Status Byte Register (SBR) Enable Registers The Device Event Status Enable Register (DESER) The Event Status Enable Register (ESER) The Service Request Enable Register (SRER) The Enable Registers and the *PSC Command The Output Queue The Event Queue Queues Event Handling Sequence Status and Events Conflicts 3 --- 4 0 Programming Messages Page Page Page Page Page Appendix A: Accessories Standard Accessories Optional Accessories Page Appendix B: Specifications Page Page Page Appendix C: Interface Specifications Interface Messages Page GPIB Function Subsets Page Appendix D: Using the *OPC Query/Command Page Appendix E: Packing for Shipment Page Appendix F: Maintenance Cleaning the Optical Ports Page Changing the Optical Port Connectors Page Page Page Appendix G: Product Verification Equipment List Power Up Display Modes GPIB Address Setting Attenuation Range Shutter Attenuation and the DISABLE button 1310 nm: Page 1550 nm: 850 nm (except OA 5002): Page Appendix H: Replaceable Parts Item Names Parts Ordering Information Using the Replaceable Parts List Indentation System Abbreviations Page AppendixH: Replaceable Parts A --- 3 4 Appendices CROSS INDEX --- MFR. CODE NUMBER TO MANUFACTURER AppendixH: Replaceable Parts OA 5000 Series User Manual A --- 3 5 Page Page Page Index A B C D E F G H N O P Q R T U V W