990DSL
Users Guide
6-16
Displaying and Deleting Saved Traces
To display or delete a saved trace, complete the following:
1. From the TDR toolbox (Figure 6-2), select
Recall Trace.
2. Press L.
A list of stored TDR trace files is displayed.
3. Press F or H to select the trace file.
4. Do one of the following:
• To display a file, press L.
The selected trace is displayed. Note that the waveform is static,
which means that it is not continuously updated. Therefore, the real-
time
Range or Pulse and Filter softkeys are not available for use.
You can use the cursor,
VOP, Gain, Zoom, Vertical, and Horizontal
softkeys. These keys operate in the same manner as they do on the
Pair 1 test result screen (see “Pair 1 Test” and Table 6-3 for
descriptions).
• To delete a file, press
Delete (for details, see Chapter 7, “Saved Test
Results”).
Compare Recall and Pair 1 Test
The Compare Recall and Pair 1 test is used to compare a previously stored
trace with a “live” trace on Pair 1. The format of the results is like those shown
in Figure 6-3, in which two “live” signals are displayed for comparison. In this
test, Pair 1 is shown as the lower trace with a solid line, and the previously
stored trace is shown as the upper trace with dotted lines.
You cannot use the real-time
Range or Pulse and Filter softkeys on the result
screen. The remaining softkeys operate in the same manner as those on the
Pair 1 test result screen (see “Pair 1” and Table 6-3 for descriptions).
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