Agilent Technologies 33120A - The Standard Event Register Is Cleared When; The Standard Event Enable Register Is Cleared When

The Standard Event register is cleared when:
 You execute the *CLS (clear status) command.
 You query the event register using the *ESR? (event status register)
command.
The Standard Event enable register is cleared when:
 You execute the *ESE 0 command.
 You turn on the power and have previously configured the function
generator using the *PSC 1 command.
 The enable register will not be cleared at power-on if you have
previously configured the function generator using *PSC 0.
Chapter 4 Remote Interface Reference
The SCPI Status Registers
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