EXFO FTB -5240S/5240BP Optical Spectrum Analyzer - Manual (Page 582)

SCPI Command Reference
576 FTB-5240S/S-P/BP
Product-Specific Commands—Description
:TRACe[:DATA]:X:STARt[:WAVElength]?
Description This query returns the X magnitude of the first
point for the specified trace.
This query has no associated *RST condition.
Syntax :TRACe[:DATA]:X:STARt[:WAVElength]?<wsp>
<TraceName>
Parameter(s) TraceName:
The program data syntax for <TraceName> is
defined as a <STRING PROGRAM DATA>
element.
The <TraceName> parameter corresponds to
the name of the trace to select.
Response Syntax <Start>
Response(s) Start:
The response data syntax for <Start> is defined
as a <NR3 NUMERIC RESPONSE DATA>
element.
The <Start> response corresponds to the X-axis
wavelength of the first point of the trace
expressed in meter.