3. Operating Instructions
3.11.10. Mask Testing
The CT100B is capable of performing mask testing on the currently displayed live TDR trace.
The mask creates an area around the scanned trace that functions as a test limit for the live
TDR trace. Any point of the trace that extends into the masked area will cause the background
to turn red. This can be used for creating acceptance criteria for cable segments and connectors.
See Figure 3.24 and Figure 3.25 for examples of traces passing and failing a mask test.
Figure 3.24.
A trace that passes the mask test
Figure 3.25.
A trace that fails the mask test
To create a Mask, use the following procedure:
1. Create a cable scan or load a scan from memory that will be used to generate a mask.
2. Select
File
→
Masks
menu.
3. With the desired cable scan selected, select
Create Mask from Trace
.
4. The CT100B will generate a mask using the selected cable scan and display it on the
screen. If the live TDR trace fits within the mask, it will appear with a green background.
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CT100B TDR Cable Analyzers Operator’s Manual
