Tektronix OA 5000 DESE

Commands

OA 5000 Series User Manual 3 --- 1 9

The *CLS command clears

Hthe Event Queue,

Hthe Standard Event Status Register (SESR), and

Hthe Status Byte Register (except the MAV bit;see below).

If the *CLS command immediatelyfollows an <EOI>, the Output Queue and

MAV bit (Status Byte Registerbit 4) are also cleared. MAV indicates informa-

tion is inthe output queue. D CLw illclear the output queue and thus MAV.

*CLS does not clearthe output queue or MAV. (A complete discussion of

these registers and bits and of event handlingin general is on page 3 ---35.)

DESE

The DESE (Device Event Status Enable) command sets and queries the bits

in the Device Event Status Enable Register (DESER). The DESER prevents

events from being reported tothe Standard Event Status Register (SESR)

and from being entered intothe Event Queue. For a complete discussion of

the use of these registers, see page 3---35.

*CLS, *ESE, *ESR, EVENT?, EVMSG?, *SRE, *STB.

DESE <NRf>

DESE?

?

DESE

<Space> <NRf>

<NRf> is a value in the range from0 to 255. The binary bits of the DESER

are set according to thisvalue. For example, DESE 209 sets the DESER to

the binary value 11010001 (that is, the firstbit in the register is set to 1, the

second bit to 1, the third bit to 0, etc.).

The power-ondefault for DESER is all bits set if *PSC is 1. If *PSC is 0, the

DESER maintains its value througha power cycle.

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 *ESE

command to set the ESER. A complete discussion of event handl-

in g is on p a g e 3 --- 3 5 .

Related Commands:

Syntax:

Arguments:

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