Agilent Technologies E1470A user manual Using This Chapter, Switching Diagram

Page 9

Chapter 1

Configuring the RF Switch

Using This Chapter

This chapter gives guidelines to use the Cascade RF Switch module (RF Switch) including:

• Switching Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

• Creating Multiple Multiplexers. . . . . . . . . . . . . . . . . . . . . . . . . .12

• RF Switch Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Switching Diagram

The E1470A Cascade RF Switch module consists of a series of twenty 3-to-1 multiplexers. Each 3-to-1 multiplexer can be programatically cascaded with other 3-to-1 multiplexers to form larger multiplexers. For example, combining two adjacent multiplexers (cascading) forms a 6-to-1 multiplexer, cascading three forms a 9-to-1 multiplexer, or cascading four forms a 12-to-1 multiplexer, etc. Cascading all twenty 3-to-1 multiplexers forms one 60-to-1 multiplexer.

Multiple combinations are simultaneously allowed on the module.

User connections to the module are to SMB connectors on the faceplate. Figure 1-2 shows the switching diagram of the Cascade RF Switch module with the switches shown in the power-on/reset state.

Since the relays on the switch are Form C, the relays are considered to be reset (or opened) when the COMMON terminal is connected to the NC terminal (the power-on/reset state). Relays are considered to be set (or closed) when the COMMON terminal is connected to the NO terminal. See Figure 1-1.

NO

COMMON	COMMON

NC

NO

NC

Form C Relay	Form C Relay
Power-On/Reset	Set or Closed
or Open State	State

Figure 1-1. Form C Relays States

Chapter 1

Configuring the RF Switch 9

Image 9

Contents E1470-90002 Page Contents Appendix C RF Switch Error Messages Index Government Restricted Rights Agilent Technologies Warranty StatementDocumentation History Safety SymbolsManufacturer’s Address Manufacturer’s NameDeclares, that the product Product Name Model NumberPage Using This Chapter Switching DiagramChapter Cascade Relays COM 33 332 Creating Multiple Multiplexers Configuring the RF Switch ChapterMaximum POWER. The maximum RF power that can be applied RF Switch ConfigurationChapter Configuring the RF Switch On this moduleSetting the Logical Address Setting the Interrupt Request Level Installing User Wiring Configuring the RF Switch Chapter Connecting User WiringSMB Connectors and Connector Housings Assembling SMB Connector JacksUser Connections Wiring RF Switch Installing Device DriversProgramming the RF Switch Chapter Addressing the SwitchProgramming Examples Chapter Programming the RF SwitchProgramming the RF Switch Chapter Example Closing a Signal Path Example Opening Closing Signal Paths Example Saving Recalling Module States Programming the RF Switch Chapter Common Commands Format Command TypesScpi Commands Format Chapter RF Switch Command ReferenceScpi Command Reference Linking CommandsRF Switch Command Reference Chapter DIAGnosticCLOSe DIAGnosticDIAGnosticOPEN DIAGnosticCLOSe?DIAGnosticOPEN relay,relay... opens individual relays on Reset to its power-on state Common to NCDIAGOPEN333 DIAGnosticOPEN?RSTDIAGThis programCLOS042,043,053,054,256REL?returns DIAGnosticRELAY?ROUTePATHCOMMon ROUTeExample Closing Channel Path 10002 SYSTemERRor? SYSTemSYSTemVERSion? Command Ieee 488.2 Common Commands Quick ReferenceDescription Commands Quick ReferenceAppendix a Appendix a RF Switch SpecificationsRF Switch Specifications Appendix a About This Appendix Appendix BRegister Addressing Addressing OverviewFigure B-1. Register Address Locations Within VXI A16 Base AddressA16 Address Space Outside the Command Module Table B-1. General Register-based Programming Method Register DefinitionsTable B-2. Register Map Register-Based Programming Appendix BTable B-4. Control Register Bit Pattern write Table B-3. Status Register Bit Patterns readRelay Control Registers Vxie Table B-10. Writing to Relay Control Registers Create and open a device session Register Programming ExampleWait 5 seconds before resetting module Void errhandler /* Error Handling Routine Register-Based Programming Appendix B Appendix C Appendix C RF Switch Error MessagesRF Switch Error Messages Appendix C Index IndexIndex E1470-90002