EXFO EPM-500 Power Meter - Manual (Page 21)

EPM-500/ELS-500/EOT-500 16
5 Using a Light Source
(ELS-500 and EOT-500) or
VFL
The ELS-500 may contain up to three sources (one-port models) or up to four
sources (two-port models). The EOT-500 may contain up to three sources.
Note: The VFL option may also be present on the EPM-500.
Activating/Deactivating a Light Source or VFL
Only one source may be active at a time. When no source is active, the unit displays
OFF.
To activate a light source (or VFL) and change the wavelength:
Press
to activate each available source in turn, including the VFL. The unit
displays the wavelength and modulation.
To deactivate the light source:
Press
until you get past the last source.
EOT-500 ELS-500
Source wavelength (and VFL indicator)
and modulation (when active)
Active source
port