EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) - Manual (Page 517)

SCPI Command Reference
Optical Spectrum Analyzer 509
Product-Specific Commands—Description
:STATus?
Description This query returns a value indicating the status of
the module (READY, BUSY, etc.).
This command is an event and has no associated
*RST condition.
Syntax :STATus?
Parameter(s) None
Response Syntax <Status>
Response(s) Status:
The response data syntax for <Status> is defined
as a <CHARACTER RESPONSE DATA> element.
The <Status> response represents the module
state, where:
UNINITIALIZED, means the module is not
initialized.
INITINPROGRESS, means the module
initialization is in progress,
READY, means the module is ready,
BUSY, means the module is busy,
DISCONNECTED, means the module is
disconnected,