Tektronix OA 5000 Enabling/Disabling Attenuation

OA 5000 Series User Manual 2 --- 3

Enabling/Disabling Attenuation

On the OA 5000, the DISABLEbutton (Figure 2-2) allows you to enable or

disable the opticalpath through the attenuator with a shutter. You can still

set the attenuation level, however,since it is not dependent on the optical

signal passing throughthe attenuator. For example, you can block the

passage of the opticalsignal through the attenuator by disabling attenua-

tion, setting the attenuationlevel, then enabling attenuation and your signal

will be attenuated to the desired level immediately.

DISABLE

MINATT

STORE1 RECALL1

STORE2 RECALL2

Thisbutton enables or

disablesattenuation.

Figure 2-2: The Location of the DISABLE Button

Toenable attenuation, press the DISABLE button on the front panel so that

the button is not lit. When the DISABLEbutton is not lit, the optical signal

passes through the attenuator.

Todisable attenuation, press the DISABLE button so that it is lighted. When

the DISABLEbutton is lighted, the internal shutter is placed across the

optical path, providing ≥100 dB attenuationfor the OA 5002, OA 5012, and

OA 5022, and ≥90 dB attenuation for the OA5032.

WARNING

Topr event damage to your eyes, avoid looki ng into the optical

output port while there i s an optical signal con nected to the input

port. Thedisable function is only valid while the instrumentis

switched on. When theOA 5000 is switched off, the shutter with-

draws from the optical path and the light is attenuated only by the

previous attenuator setting.

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