Fluke DTX Series - Page 6

DTX Series CableAnalyzer
Technical Reference Handbook
iv
PASS*/FAIL* Results.................................................................................................. 3-12
Wire Map.................................................................................................................. 3-13
Resistance ................................................................................................................. 3-15
Characteristic Impedance......................................................................................... 3-15
Length....................................................................................................................... 3-16
Propagation Delay and Delay Skew........................................................................ 3-17
Insertion Loss............................................................................................................ 3-18
NEXT (Near-End Crosstalk)....................................................................................... 3-20
ACR (Attenuation to Crosstalk Ratio) ..................................................................... 3-22
Return Loss ............................................................................................................... 3-24
PSNEXT (Power Sum Near End Crosstalk) Test........................................................ 3-26
PSACR (Power Sum Attenuation to Crosstalk Ratio) Test ...................................... 3-26
ELFEXT (Equal Level Far-End Crosstalk) Test........................................................... 3-26
PSELFEXT Test........................................................................................................... 3-29
Running Single Tests..................................................................................................... 3-29
Monitoring Impulse Noise............................................................................................ 3-31
Using the Tone Generator............................................................................................ 3-34
4 Diagnosing Twisted Pair Cabling Faults...................................................................... 4-1
Using the Automatic Diagnostics................................................................................. 4-1
Avoiding Tester-Induced Failures................................................................................. 4-1
Common Causes of Twisted Pair Test Failures............................................................. 4-2
The HDTDX Analyzer.................................................................................................... 4-9
Running the HDTDX Analyzer................................................................................. 4-9
Recognizing Faults on HDTDX Plots........................................................................ 4-11
The HDTDR Analyzer .................................................................................................... 4-12
Running the HDTDR Analyzer................................................................................. 4-12
Recognizing Faults on HDTDR Plots........................................................................ 4-12