EXFO IQS-1700 High Performance Power Meter for IQS-500/600 - Manual (Page 33)

Setting Up Your High Performance Power Meter
High Performance Power Meter 25
Selecting the Wavelength
Selecting the Wavelength
When taking accurate measurements, your power meter must be set to
the correct wavelength to compensate for the photodetector responsivity
at the incident wavelength. Ideally, the power meter’s wavelength should
be set as close as possible to that of the optical source being used.
The wavelength must be selected from the wavelength list. To set the
wavelength list, see Managing Wavelength Lists on page 26.
To select the wavelength (either from the Instrument or Settings
function tab):
1. Select the channel for which you want to set the wavelength (if you
have a multiple-channel power meter).
2. Select the wavelength using the arrow buttons next to the  list.
3. If you are in the Channels tab of the Settings function tab, click Apply
to confirm your new setting.
Note: You can also use the All Channels button to modify all channels identically.
Values previously set will turn red to indicate that the new setting differs.
Wavelength list