Agilent 33120A User's Guide

Chapter 4 Remote Interface ReferenceThe SCPI Status RegistersTo Determine When a Command Sequence is Completed1 Send a device clear message to clear the function generator’soutput buffer (e.g., CLEAR 710).2 Clear the event registers with the *CLS (clear status) command.3 Enable the “operation complete” bit (bit 0) in the Standard Eventregister by executing the *ESE 1 command.4 Send the *OPC? (operation complete query) command and enter theresult to ensure synchronization.5 Execute your command string to program the desired configuration,and then execute the *OPC (operation complete) command as the lastcommand. When the command sequence is completed, the “operationcomplete” bit (bit 0) is set in the Standard Event register.6 Use a serial poll to check to see when bit 5 (standard event) is set in theStatus Byte summary register. You could also configure the functiongenerator for an SRQ interrupt by sending *SRE 32 (Status Byte enableregister, bit 5).206