The VINStrument Subsystem

The commands within the VINStrument subsystem used for VME data transfers are shown below:

VINStrument [:CONFigure]

:VME

:FEED <source > :MEMory

:INITiate [:MODE] <mode > :SEND

:ADDRess

:DATA?

VME Bus Transfer

Programming

Sequence

Setting the VME Bus Transfer Mode

To configure the digitizer for VME bus data transfers:

Use the CONFigure command and the low-level digitizer commands to specify the number of readings, the expected value of the readings, the input port, the arm source, etc.

Use the TRIGger:STARt:SOURce command to set the trigger source to VME (for real time data transfers only).

Use the VINStrument subsystem to set the VME bus transfer mode and data source.

Use the INITiate:IMMediate command to initiate reading transfers. The VME bus data transfer mode is set with the command:

VINStrument[:CONFigure]:VME[:MODE] <mode >

The <mode > parameters are:

GENerate - VME bus data transfers are enabled

OFF - VME bus data transfers are disabled. At power-on or following a reset, the <mode > is OFF.

Note When transferring data over the VME bus, the Local bus transfer mode (HP E1429B) must be disabled. This is done with the command:

VINStrument[:CONFigure]:LBUS[:MODE] OFF

Chapter 3

Understanding the HP E1429 Digitizer 151

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HP E1429A manual VINStrument Subsystem, Vme, Data?