Universal commands
Universal commands are encoded in the range 10 through 1F hex. They affect all instruments connected to the bus and do not require addressing.
Command | Long term | Effect on the instrument |
---|---|---|
*) IFC is not a real universal command, it is sent via a separate line; however, it also affects all instruments connected to the bus and does not require addressing | ||
DCL | Device clear | Aborts the processing of the commands received and sets the command processing software to a defined initial state. Does not change the instrument settings. |
IFC | Interface clear *) | Resets the interfaces to the default setting. |
LLO | Local lockout | The Local softkey is disabled. Manual operation is no longer available until GTL is executed. |
SPE | Serial poll enable | Ready for serial poll. |
SPD | Serial poll disable | End of serial poll. |
PPU | Parallel poll unconfigure | End of the parallel-poll state. |