JDS Uniphase SWS15100, Руководство пользователя

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80 – Operating and Maintenance Instructions
Retrieving a Trace from Memory
To view a trace that is saved to memory, click the Memory checkbox and press the Refresh
button. The trace appears on the chart. Press the Reset button or Autoscale button in the Chart
area to redraw the plot, if necessary.
Inverting a Data Set
A data set can be inverted; that is, all power values can be changed in sign, by clicking the Invert
Data Set check box, and then clicking Refresh.
Overlaying a Trace
A previously saved trace can be overlaid onto the currently displayed trace. To perform an
overlay, save a trace as explained in the
Saving a Trace to Memory section. Acquire a new
trace to display, or load a data set that has been stored previously. See the File Menu section
for details on saving a data set. When the new data is shown on the chart, click the Memory
check box, ensure that it is checked, and click the Refresh button. The old data is now
superimposed over the current trace.
Chart Properties
The SWS software allows the user to select the units used for the x-axis and y-axis. Click the
radio button for the desired units in the Configure Chart Properties section of the Process and
Display Options tab page.
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The units for the x-axis can be either wavelength (nm) or frequency (GHz).
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The units for the y-axis can be either linear (%) or logarithmic (dB).
Changing Scales on the Plot Axes
The scale factors used to display the acquired traces can be changed easily. To change the
parameters for the axes, press the Axes button on the Process and Display Options tab page. A
dialog box appears, as shown in Figure 69. Use this dialog to change the minimum displayed
value, the maximum displayed value, and the origin.
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