EXFO IQS-1500 Power Meters for IQS-500/600 - Manual (Page 156)

SCPI Command Reference
148 IQS-1100/IQS-1500
Product-Specific Commands—Description
Response(s) Wavelength:
The response data syntax for <Wavelength> is
defined as a <NR3 NUMERIC RESPONSE DATA>
element.
This query returns the current wavelength in
meters for the specified channel.
Any wavelength within spectral range of the
power meter optical detector at 1 nm resolution
(0.1 nm for the IQS-1500)
Example(s) SENS:POW:WAV?
See Also SENSe:POWer:WAVelength
:SENSe[1..n]:POWer:WAVelength?