EXFO Photonic Solutions Div. EPM-ELS-50: 5 Using a Light Source (ELS-50)

Using a Light Source (ELS-50) 12

5 Using a Light Source

(ELS-50)

The ELS-50 may contain up to three sources.

Activating/Deactivating a Light Source

Only one source may be active at a time. When no source is active, the unit displays

OFF and leaves the top left corner empty.

To activate a light source and change the wavelength:

Press

to activate each available source in turn. The unit displays the wavelength

and modulation.

To deactivate the light source:

³ Press

until you get past the last source.

OR

³ Hold down

a few seconds.

Modulating the Source Signal

When you activate the first source, the signal is always CW (unmodulated). When

you switch sources, the modulation remains the same. Modulation is indicated in

the top left corner.

Available modulation values are: CW, 270 Hz, 1 kHz and 2 kHz.

To change the signal modulation:

1. Activate the source.

2. Press to switch between available modulations.

Note: When the output signal is modulated

(270Hz, 1kHz, 2kHz), you will notice the

mention out blinking in the top left corner of the display.