Instruction manual

Chapter 4 Command Reference

:STATus Subsystem

Programming Guide 4-33

COMMAND :STATus:OPERation[:EVENt]?

Queries the status of the Operation Event Status Register.

QUERY RESPONSE • Numeric data transferred as ASCII bytes in <NR1> format.

• Range is 0 to 32,767.

• The query response value is an integer formed by the binary weighting

of bits. The value of unused bits is zero.

COMMENTS • Each event bit in the Operation Event Status Register corresponds to a

specific condition bit in the Operation Condition Status Register; this

allows the Operation Event Status Register to detect changes in

conditions.

• An event becomes TRUE when the associated condition makes the

transition specified by the transition filters.

• The event bits, once set, are “sticky”—i.e., they cannot be cleared until

they are read, even if they do not reflect the current status of a related

condition.

• The Operation Event Status Register is cleared by *CLS, by

:STAT:OPER[:EVEN]?, and at power-on.

FRONT-PANEL

KEYS

None