Fluke DSX-8000 - Page 229

Chapter 6: Diagnose Copper Test Failures
Causes of Coaxial Test Failures
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Length gives an End Not Found result
 A terminator is connected to the far end of the cable
 The cable is connected to a splitter
Propagation delay gives a FAIL result
Link is too long (may need to remove coiled service loops)
Insertion loss gives a FAIL, FAIL*, or PASS* result
 Link is too long (may need to remove coiled service loops)
 Poor quality patch cord
 Bad connection
 Wrong cable type in the installation
 Wrong test standard selected
Characteristic impedance exceeds the limit
 Bad connection
 Cable compression (tight cable ties, pinches, kinks, etc.)
 Mismatch of cable types
 Water in the cable jacket
 Incorrect terminator resistance
HDTDR test fails (a reflection exceeds the 15% limit)
 Bad connection due to oxidized or loose contacts
 Mismatch of cable types
Table 9. Causes of Coaxial Test Failures (continued)