Standard Operation Status Group Structure - Agilent Technologies 4349B Manual

4349B
Standard Operation Status Group
The 4349B provides two standard operation status groups|operation status register group and
questionable status register group|which can be accessed using subsystem commands.
(Refer to subsystem in \GPIB Commands".) If you are beginner, you will rarely need
to use this group. The individual bit assignment of these registers are given \Operation Status
Register" and \Questionable Status Register" later in this section.
Each group includes a condition register, an event register, and an enable register.(Illustrated in
Figure 5-5.)
The condition register re ects the internal states of 4349B. So each time the 4349B's condition
is changed, its condition bit is changed from \0" to \1", or from \1" to \0".
The event register's bit corresponds to a condition register's. The transition lter reports to the
event register that an event (a bit changed from \1" to \0") has taken place in the condition
register.
The enable register enables the corresponding bit in the event register to set the status
summary bit, bit 7, or bit 3 of the status byte.
Figure 5-5. Standard Operation Status Group Structure
5-36 GPIB Reference