EXFO T200S, Руководство пользователя, Страница: 39 / 146

Setting the Emission Wavelength/Frequency
Tunable Laser Source
33
Performing a Sweep Sequence
Manually Controlling the Sweep Sequence
The following procedures explain how to manually control the sweep: you can arm, start
and stop a sweep sequence.
When you start a sweep sequence, the laser first moves to the start wavelength/frequency
before sweeping. Arming the laser before starting the sweep enables you to set the laser to
the start position, to make sure the laser sweeps the defined wavelength/frequency range
as soon as you start the sweep.
To perform a manual sweep sequence:
1.
In the SWEEP mode window, touch the button.
The Sweep mode settings menu appears.
2. In the Sweep Control area, clear the Trigger In check box.
3. Touch anywhere outside the menu to exit.
4. Enable the laser output (see Enabling/Disabling the Laser Output on page 39).
5. If you want to arm the laser to the start position before sweeping, touch the button.
The laser moves to the start position and is ready to perform a sweep sequence.
6.
Touch the button to start the sweep sequence.
³
If the laser was previously armed to the start position, it directly starts the sweep
sequence from the start wavelength/frequency according to the parameters you
have defined in the Sweep mode settings menu.
³
If the laser was not armed, the laser first moves to the start wavelength/frequency
before starting the sweep sequence.
The laser automatically stops sweeping when the cycle sequence is finished, and if the
Auto-Return parameter is selected, the laser moves to the start position.
To stop the sweep sequence in progress:
³
To stop the sweep sequence in progress or to disarm the laser, touch the button.
The laser stops the sequence and stays at the current wavelength/frequency position.
If the
Auto-Return
parameter is selected, the laser does not move to the start position.