Agilent Technologies 4349B Manual page 102

For example, to generate an interrupt when an error occurs in the 4349B:
4-14 Remote Operation
Clears status byte register
Sets Command Error Bit and Execution Error Bit
Sets Standard Event Status Register Summary Bit
Tells where to branch to when interrupted
Enable an interrupt from GPIB interface
Clears the SRQ bit of the Status Byte
Asks contents of the Standard Event Status Register
Asks to output error number and message
4349B