56 Chapter 4
Viewing Catalogs and Saving Files
Saving a File
NOTE You should notice that the trace you saved, in this example trace 3, is loaded to
trace 2. If you wish to verify this condition, remove the signal input. Press
Input/Output, Input Port, Amptd Ref (Off).
When a trace is loaded, it is placed in view mode. To see that trace 2 is in view
mode, blank traces 1 and 3 by pressing
View/Trace, Trace 1, Blank, Trace 3,
Blank. Then press Trace 2. Notice that trace 2 is the only trace displayed in view
mode (the view key is selected, and the trace is not sweeping). Your display should
look similar to Figure 4-6.
Figure 4-6 Verifying Trace 1
CAUTION When operating in DC coupled mode, ensure protection of the input mixer by
limiting the input level to 0 Vdc and +30 dBm.
NOTE When loading Limits files, be sure you have selected the appropriate X-Axis
Units: frequency or time (
Display, Limits, Properties, X Axis Units). If you are in
time X-Axis Units, and you load frequency limits, all current limit line data will be
erased and the analyzer will switch to the frequency domain. The reverse of the
this situation also holds true.
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