EXFO CT440 Series, User Manual

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CT440
35
5 Performing Measurement Scans
Configuring the CT440 for Measurements
Before starting a measurement, you must configure the TLS and detectors used, and the
wanted scan and measurement parameters.
Configuring Scan Parameters
The Scan Parameters window enables you to select and configure the appropriate laser
type(s) connected to your CT440 and to set the scan parameters.
You cannot set scan parameters during a scan.
To configure the scanning range:
1.
Start the CT440 (see Starting/Stopping the CT440 on page 21).
2. In the main window, click the button located to the left of the Scan button.
The Scan Parameters window appears.
3.
Set the wanted scanning range according to the instructions given in the following
table.
Parameter Description
Start/Stop (nm) Wavelength range you want to scan according to the wavelength
limits of the TLS you have connected in the input port.
Sampling res. (pm) Sampling resolution of the scan (for more details on possible
values, see Technical Specifications on page 7).
The chosen value provides the sampling step.
RAW button (CT440 without PDL option only): automatically sets
the resolution to native, which is 100±10 MHz. In this case, all
measurements are done at the native resolution, without
re-sampling of data. For more details, see Data Acquisition: Raw
and Resampled Data on page 4.