Agilent Technologies 75000 SERIES B, E1301B, E1300B user manual Status System Structure

Status System Structure

NOTE

The instrument status structure monitors important events for an instrument such as when an error occurs or when a reading is available. All instruments have the following status groups and registers within those groups:

•Status Byte Status Group

–status byte register

–service request enable register

•Standard Event Status Group

–standard event status register

–standard event status enable register

•Operation Status Group

–condition register

–event register

–enable register

•Questionable Data Status Group

–condition register

–event register

–enable register

You read and configure the registers in the Status Byte and Standard Event groups using Common Commands. These are the most commonly used instrument registers. The registers in the Standard Operation Status group and Questionable Data status group are configured using the commands in the STATus subsystem.

The Status Byte, Standard Event, and Operation Status groups are the only groups covered in this chapter. The Questionable Data status group is supported by the system instrument (Command Module) but is not used by the system instrument. Commands affecting this status group (Chapter 5) are accepted but have no effect.

Refer to the STATus subsystem in the Command Reference of the individual plug-in module manuals to determine how a module uses the Operation Status group and Questionable Data status groups. If the STAT:OPER or STAT:QUES commands are not documented in the plug-in module manual, that module does not use the registers.

6-2 Controlling Instruments Using GPIB