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Making Measurements
Measuring Wavelength and Power
List by WL or Power modes
In the list-by- wavelength or list-by-power modes, the measurements of
five laser lines can be displayed at any one time. Use the and
softkeys to move the cursor through the list of signals; the list can
contain up to 200 entries. Press the SELECT key, and the display
changes to peak wavelength mode with the signal at the cursor dis-
played.
Annotation in the upper right corner of the display indicates whether
the signals are ordered according to wavelength (BY WL) or power (BY
PWR). The cursor shows the currently selected laser line. As you scroll
through the responses, the current position of the selection cursor is
shown along the screen’s right side.
Figure 2-2. Display after “List by WL” key pressed
Also notice that power bars graphically show the relative power levels
between laser lines.
To display multiple laser lines
1 Connect the fiber-optic cable to the front-panel OPTICAL INPUT
connector.
2 Press the green Preset key.
3 Press List by WL to display the laser lines from the shortest wavelength
to the longest wavelength.
4 Press List by Power to display the laser lines in order of decreasing
amplitudes.