*ESR?

Event Status Register

Definition:

The *ESR? query 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:

<register value><NL>

 

<register value> is in integer NR1 form

Example:

*ESR?

Related Commands:

*CLS *ESE

*OPC

Operation Complete

Definition:

The *OPC command will cause the 801G* to set the

 

OPC bit in the Event Status register when all opera-

 

tions have been completed. Since there are no over-

 

lapping commands, the *OPC command will set the

 

OPC bit immediately when executed.

 

The *OPC query will put a "1" in the output buffer

 

when all operations are complete.

Command Syntax:

*OPC

Example:

*OPC

Query Syntax:

*OPC?

 

Returns: 1<NL>

Example:

*OPC?

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Quantum Data 801GC, 801GF, 801GX manual Event Status Register, Operation Complete