Agilent Technologies Infiniium 8000A Programmer's Reference Manual page 63

Status Reporting
Status Reporting Data Structures
Status Reporting Data Structures
The different status reporting data structures, descriptions, and interactions
are shown in Figure 4-2. To make it possible for any of the Standard Event
Status Register bits to generate a summary bit, you must enable the
corresponding bits. These bits are enabled by using the *ESE common
command to set the corresponding bit in the Standard Event Status Enable
Register.
To generate a service request (SRQ) interrupt to the computer, you must enable
at least one bit in the Status Byte Register. These bits are enabled by using the
*SRE common command to set the corresponding bit in the Service Request
Enable Register. These enabled bits can then set RQS and MSS (bit 6) in the
Status Byte Register.
For more information about common commands, see the "Common Commands"
chapter.
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