EXFO FTB -5240S/5240BP Optical Spectrum Analyzer - Manual (Page 577)

SCPI Command Reference
OSA 571
Product-Specific Commands—Description
:SNUMber?
Description This query returns the serial number of the
instrument.
This command has no associated *RST
condition.
Syntax :SNUMber?
Parameter(s) None
Response Syntax
Response(s) SerialNumber:
The response data syntax for is
defined as a
element.
The response represents a
string containing the instruments serial number.
Example(s) SNUM? Returns "123456-AB"