Agilent Technologies InfiniiVision 5000 Series Programmer's Manual page 628

9
Status Reporting
The status registers picture above shows how the different status reporting
data structures work together. To make it possible for any of the Standard
Event Status Register bits to generate a summary bit, the bits must be
enabled. 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 an external controller, at
least one bit in the Status Byte Register must be enabled. 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.
628 Agilent InfiniiVision 5000 Series Oscilloscopes Programmer's Guide