Keysight Technologies 8163A, User Manual

Page: 144 / 466

8163A/B, 8164A/B, 8166A/B User’s Guide 143
Tunable Lasers 5
How to Set the Wavelength
There are three ways to set the wavelength of the Tunable Laser.
• You can set the wavelength (
λ ) directly,
• You can set the wavelength from a base wavelength and an offset in the
frequency domain, or
• You can set a wavelength range for the instrument to “sweep”.
Wavelength Range
Every Tunable Laser module has a specified wavelength range. This range
is available for all Tunable Laser modules. See the "Specifications" chapter
of your Tunable Laser User’s Guide to find your module’s specified range.
Every Tunable Laser module has a permitted wavelength range. This range
is greater than the specified range. The permitted wavelength range varies
for each Tunable Laser module. You can set the wavelength to any value
within the permitted wavelength range.
Figure 82 on page -143 shows an example of specified and permitted
wavelength range.
Figure 82 Specified and Permitted Wavelength Range
How to Set the Wavelength Directly
You can set a constant wavelength.
To set the wavelength to 1545.500 nm:
1 Move to the Tunable Laser channel.
2 Move to the wavelength parameter, [
λ
],
and press Enter .
3 Enter 1545.500 and press Enter .
l [nm]
Specified Range
Permitted Range
1460 1580 1600 1450
Not to Scale