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Tektronix OA 5000 *ESR? (Query Only), EVEnt? (Query Only)

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Commands

Programming

3 --- 2 2

NOTE

Setting the DESER and the ESER to the same value allows only

those codes to be entered into the Event Queue and summarized

on the ESB bit (bit 5) of the Status Byte Register. Use the DESE

command to set the DESER. A complet ed iscussion of event handl-

in g is on pa g e 3--- 35.

*ESE 209

sets the ESER tobinary 11010001, which enables the PON, URQ, EXE,

and OPC bits.

*ESE?

might return the string *ESE 186, showing that the ESER containsthe

binary value 10111010.

*ESR? (Query Only)

The *ESR? (Event Status Register) query returns the contents ofthe Stan -

dard Event Status Register (SESR). *ESR? also clears the SESR (since

reading the SESR clears it). Fora complete discussion of the use of these

registers, see page 3---35.

ALLev?, *CLS, DESE, *ESE, EVENT?, EVMSG?, EVQTy?,*SRE , *STB.

*ESR?

*ESR ?

*ESR?

might return the value 213, showing that the SESR containsbinary

11010101.

EVEnt? (Query Only)

The EVEnt? query returns from the Event Queue an event code that pro-

vides informationabout the results of the last *ESR? read. EVENT? also

removes the returned value from the Event Queue. Notethe the ALLev?

command removes allpending events from the event queue and places

them in the output queue. A complete discussionof event handling is on

page 3---35.

ALLev?, *CLS, DESE, *ESE, *ESR?, EVMSG?, EVQty?, *SRE, *STB.

EVEnt?

Examples:

Related Commands:

Syntax:

Examples:

Related Commands:

Syntax:

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