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VXI Microwave Matrix, SM7100 user manual VXI Technology, Inc

Models: SM7100 Microwave Matrix

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VXI Technology, Inc.

PROGRAMMING

With the introduction of VISA, sending a command to a register-based device is as simple as sending a command to a message-based device. Whether the application is graphical or standard, sending commands to the register-based device is just as intuitive. The VISA template for transferring data to a register-based device, utilizing A32 extended memory space, is as follows:

viOut16 (Handle, VI_A32_SPACE, Offset, Data)

Handle is passed by reference whenever a VISA session to a particular device is opened.

VI_A32_SPACE is defined in the VISA header file.	(VI_A16_SPACE	and
	VI_A24_SPACE are also valid.)

Offset is determined from the memory map and is in decimal format.

Data is a 16-bit signed integer value representing the state of the relays.

The following example is for a SM5001, 80 channel SPST relay card utilizing A32 extended memory space. To close relays K1, K33 and K48 while leaving the other relays open, the following commands would be sent:

viOut16	(Handle,	VI_A32_SPACE,	0,	1)	'closes relay 1
viOut16	(Handle,	VI_A32_SPACE,	4,	32769)	'closes relay 33 and 48

VISA is the software architecture standard instituted by the VXIplug&play Alliance and is at a very high level of communication to a VXIbus device. The same philosophy and simplicity applies if the instrument is being programmed via lower level commands of an API (Application Programmer's Interface).

The device Relay Register Map is shown in the following table.

34	SM7100 Programming

Image 34

VXI Microwave Matrix, SM7100 user manual VXI Technology, Inc

Contents

SM7100 P/N: Released February 13, VXI Technology, Inc2031 Main Street Irvine, CA 949 MICROWAVE MATRIX USER’S MANUALVXI Technology, Inc SECTION TABLE OF CONTENTSSECTION SECTIONCERTIFICATION WARRANTYLIMITATION OF WARRANTY RESTRICTED RIGHTS LEGEND2031 Main Street D E C L A R A T I O N O F C O N F O R M I T YVXI Technology, Inc Irvine, CaliforniaUse Proper Power Cord GENERAL SAFETY INSTRUCTIONSTERMS AND SYMBOLS Use Proper Power SourceGround the Product WARNINGS CONTAvoid Electric Shock Operating ConditionsVXI Technology Cleveland Instrument Division SUPPORT RESOURCESVXI Technology World Headquarters VXI Technology Lake Stevens Instrument DivisionSECTION INTRODUCTIONSM7100 SPECIFICATIONS SETTING THE CHASSIS BACKPLANE JUMPERS PREPARATION FOR USECALCULATING SYSTEM POWER AND COOLING REQUIREMENTS SECTIONBACK FRONTBACK FRONTVXI Technology, Inc SM7100 Preparation for UseSECTION SWITCH CONFIGURATIONFRONT PANEL CONNECTION - SM7000 VXI Technology, Inc SM7100 Module Configuration EXPANSION INPUTS FIGURE 3-4:SM7100 MATRIX SCHEMATICINPUTS EXPANSION OUTPUTSOffset SM7100 Module Configuration VXI Technology, IncSECTION PROGRAMMINGREGISTER ACCESS ADDRESSINGWRITE FUNCTION TABLE 4-1:SMIP II REGISTER MAP - A16OFFSET READ FUNCTIONDevice Type Register 0x02 — Read Only ID Register 0x00 — Read OnlyLogical Address Register 0x00 — Write Only Status Register 0x04 — Read OnlyReserved Register 0x0C — Read Only Offset Register 0x06 — Read and WriteReserved Register 0x0A — Read Only Version Number Register 0x0E — Read OnlyInterrupt Control Register 0x1C — Read and Write NVM Access Resister 0x20 — Read OnlyNVM Access Resister 0x20 — Write Only Subclass Register 0x1E — Read OnlyTrace RAM End Low Register 0x2E — Read and Write Trace RAM End High Register 0x2C — Read and WriteTrace RAM Start Low Register 0x2A — Read and Write TTL Trigger Polarity Register 0x38 —WriteOnly Open Trigger Select Register 0x36 —WriteOnlyTrace RAM Control Register 0x3A — Read and Write Board Busy Register 0x3E — Read Only Trigger Advance Register 0x3E — Write OnlyReserved Registers — Read and Write Control Register - Read and Write ADDRControl Register - Read and Write continued Control Register - Read and Write continued Delay Register - Read and Write Status Register - Read OnlyRELAY REGISTER OFFSET DEVICE MEMORY MAPWRITING TO THE RELAYS VXI Technology, Inc INDEX VXIbus Extended Device VXI Technology, IncSM7100 WEEE