Quantum Data 802BT - Manual (Page 218)

208 Appendix A Command Reference
*ESR?
Event Status Register
Class GPIB
Description Returns the current value of the Event Status register. After this command is executed, the
Event Status register is cleared. This is the only way of clearing any bit in the Event Status
register except by the *CLS command.
Query syntax *ESR?
Returns registerValue NL
Where registerValue is in integer NR1 form.
Related commands *CLS , *ESE