EXFO FLS-2600B Tunable Laser Source - Manual (Page 39)

Setting Sweep Parameters
Tunable Laser Source 31
Setting the Sweep Step
Setting the Sweep Step
You can set the size of the step (in nm or THz) for your step-by-step sweep.
Your tunable laser source unit was designed to give a constant step value
using nm as units. When steps are given in THz, the selected step value
represents the average value of the steps during the sweep, since an
interval in nm does not always have the save equivalent value in THz
according to the wavelength bandwidth you have selected.
To set the step:
1. Make sure you have selected the step-by-step sweeping mode (as seen
in Selecting the Sweep Mode on page 30).
2. Press Sweep.
3. Turn the selection dial clockwise until STEP is displayed.
4. Press ENTER. The Edit marker starts blinking in the lower part of the
display.
5. Turn the selection dial clockwise or counterclockwise to select the
desired size for the step.
Edit
nm