Tektronix OA 5000 Setting the Attenuation Level

Setting Attenuation Levels

User Reference

2 --- 6

Step 2: Use the two knobs to adjust the displayed wavelength value.

The COARSE knob changes the displayed value by 10 nm per click and

the FINE knob changes the displayed valueby 1 nm per click. The

wavelength can be adjusted from 600 to 1700 nm.

Step 3: When the desired wavelength is displayed,press WAV E-

LENGTH again to accept the new displayed value. The OA 5000 will

return to the previous attenuationdisplay mode.

Toset the attenuation level once you have set the wavelength:

Step 1: Set the attenuation display mode by pressing the MODE but-

ton.

The attenuation displayshows the current attenuation value in one of two

modes, absolute or relativeto a reference value. Pressing the MODE button,

while it is illuminated, toggles betwe en these modes.

When the ATT light is on and the -- R EF light is off, the displayed attenuation

is in absolutemode. In this mode, the displayed attenuation is the value

relative to itsabsolute minimum setting. The minimum value in this mode is

always 0 dB.

When both the ATT and --R EF lights are on, the displayed attenuation value

is the absolute attenuationvalue minus the value of the reference (refer to

the section Setting the ReferenceValue to set the reference). The COARSE

and FINE knobs still adjust the attenuationvalue as with absolute mode.

The only differenceis the value displayed in the attenuation display.

Step 2: Set the desired attenuation valueby adjusting the COA RSE

and FINE knobs. The COARSE knob changes the attenuation by 1 dB

per click and the FINE knob changes the attenuation by0. 01 dB per

click.

NOTE

Switching between the absol ute and relative display m odes does

not change the actual attenuation value but only the value dis-

played.

Setting theAttenuation Level

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