Esr; Idn; Opc - Rigol DS4000E Series Programming Manual

Chapter 2 Command System
Return Format
The query returns an integer (corresponds to the binary-weighted sum of all the bits) between 0 and 255.

*ESR?

Syntax
*ESR?
Description
Queries the event status register of the standard event register set.
Remarks
For the definitions of the bits in the standard event register, refer to the *ESE command.

Querying the event status register will clear this register.

Return Format
The query returns an integer (corresponds to the binary-weighted sum of all the bits from bit 0 to bit 7)
between 0 and 255.

*IDN?

Syntax
*IDN?
Description
Queries the instrument information.
Return Format
The query returns RIGOL TECHNOLOGIES,<model>,<serial number>,<software version>.
Wherein,
<model>: indicates the model number of the instrument.
<serial number>: indicates the serial number of the instrument.
<software version>: indicates the software version of the instrument.

*OPC

Syntax
*OPC
Description
Sets bit 0 (Operation Complete, OPC) in the standard event status register to 1 after the current operation
is finished.
*OPC?
Syntax
*OPC?
Description
Queries whether the current operation is finished.
DS4000E Programming Guide
RIGOL
2-101