Mohr CT100B Series - Common Types of TDR Cable Faults

4. Operating Instructions
Figure 4.1. Clip lead adapter (red, top) and controlled-impedance adapter (black, bottom)
testing of 3 ft. coaxial cable with short termination. Active cursor is at the test port. Clip
lead adapters introduce severe TDR trace distortion.
4.2. Common Types of TDR Cable Faults
TDR cable faults include opens, shorts, and soft (or partial) faults.
Open faults appear as a pulse upward in the TDR trace (Figure 4.2). These kinds of faults appear
naturally when the cable isn’t connected to anything and often indicate the end of the cable.
Figure 4.2. Open faults appear as a pulse upward in the TDR trace.
Short faults appear as a pulse downward in the TDR trace (Figure 4.3).
40 CT100B TDR Cable Analyzers Operator’s Manual