EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 462)

SCPI Command Reference
448 OTDR
Product-Specific Commands—Description
:SOURce[1..n]:WAVelength?
Description This query returns the output wavelength of the
currently selected source, in meters.
At *RST, the wavelength that will be selected
depends on the instrument you have.
Syntax :SOURce[1..n]:WAVelength?[<wsp>MINimum|
MAXimum|DEFault]
Parameter(s) Parameter 1:
The program data syntax for the first parameter is
defined as a <CHARACTER PROGRAM DATA>
element. The allowed <CHARACTER PROGRAM
DATA> elements for this parameter are:
MINimum|MAXimum|DEFault.
MINimum is used to retrieve the instrument's
smallest supported value.
MAXimum is used to retrieve the instrument's
greatest supported value.
DEFault is used to retrieve the instrument's
default value.
Response Syntax <Wavelength>