EXFO FTB -5240S/5240BP Optical Spectrum Analyzer - Manual (Page 604)

SCPI Command Reference
598 FTB-5240S/S-P/BP
Examples on Using the SCPI Commands
Examples on Using the SCPI Commands
Here are a few examples on using the SCPI commands sequences. The left
column of the table indicates the command and its position in the
sequence, and the right indicates relevant comments about it.
When the command is in bold characters, it is specific to the example; the
other commands are there to ensure that the sequence is performed
smoothly.
Performing an Offset Nulling and Wavelength
Referencing
Command Sequence Comments
STAT? Test instrument state is idle. Poll STAT? until the
returned state is READY.
CAL:ZERO:AUTO ONCE Start nulling and referencing.
Note: this command will take up to 5
seconds to complete.
STAT:OPER:BIT9:COND? Wait for the nulling to be completed. Poll bit 9
until the returned value is 0.