3. Operating Instructions
Figure 3.26.
Envelope Plot with Fill Mode, with the active cursor positioned at the fault
location (red circle). Note that the black lines shown here to emphasize the “virtual
arrow” do not actually appear on the instrument screen.
Figure 3.27.
Envelope Plot with Probability Density display.
3.11.12. Difference (Subtraction) Traces
Difference traces are traces calculated from the subtraction of one trace from another trace. A
difference trace can allow the operator to identify subtle changes in cable or connector
performance. It is recommended that for any important cable and connector assembly, the
as-manufactured or known-good configuration of the assembly be scanned and archived on the
CT100B and/or a host PC running CT Viewer 2. Later, these archived traces can be used to
create difference traces from current data to highlight changes in cable assembly impedance. To
create a difference trace, use the following procedure:
1. Press the
SCAN
button. The
Scan
menu appears.
2. Press the
SELECT
button until the first trace of interest is selected.
CT100B TDR Cable Analyzers Operator’s Manual
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