Setting the Wavelength/Frequency and FWHM Values
XTA-50 User Guide
25
Figure 9: ITU Grid Selection Window
2.
Set the predefined grid you want to use:
•
Band
: touch the button corresponding to the band you want to use.
•
Frequency Spacing
: touch the button corresponding to the wanted spacing
between two channels of the grid.
3.
Touch the
Grid
button to display the selected ITU grid.
The grid window appears: channels are organized in tables. Each tab corresponds to
a table and the name of the tab is the first value of its table.
Figure 10: ITU Grid Window
4.
Specify the wanted spectral unit by touching the
button.
•
In wavelength mode:
•
FWHM unit is pm (picometer).
•
Wavelength unit is nm (nanometer).
•
In frequency mode:
•
FWHM unit is GHz (gigahertz).
•
Frequency unit is THz (terahertz).
5.
Select the wanted channel:
a. Touch the tab to display the corresponding table.
b. In the table, select the value corresponding to the wanted channel.
6.
Specify the FWHM:
a. In the
FWHM
area, touch the gauge.
Important
FWHM can be constrained by wavelength/frequency value (see
Constrain on Central Wavelength, p. 24
for reverse principle).
Summary of Contents for XTM-50 O-band
Page 1: ...www EXFO com XTA 50 Optical Tunable Filter User Guide XTA 50_UG_2 1v2 3...
Page 2: ......
Page 18: ...Installing and Connecting the XTA 50 18 XTA 50 User Guide...
Page 22: ...Turning on off the XTA 50 22 XTA 50 User Guide...
Page 62: ...Performing Basic Maintenance Operations 62 XTA 50 User Guide...
