RFL
Copper and G.fast/VDSL2/ADSL2+ Multi-play Test Set
287
K-Test
K-Test
The RFL
K-Test
(Küpfmüller test) method allows you
to locate faults on both conductors of one pair. In
other words, the K-Test is specialized for detecting
double faults. Due to the precision and sensitive
nature of RFL tests, the cable pair under test should be
open (disconnected) and battery removed. One of the
faults must be greater in resistance than the fault on
the other pair.
Note:
K-Test is implemented to locate double sided faults
when a good wire/pair isn't available. Both resistance
faults must be occur at the same place in the cable
(either both to ground, or both to the same negative or positive battery
voltage).
The K-Test is performed in 2 steps:
1.
Measurements are made with the far end open.
2.
Measurements are made with the far end closed/shorted (strap).
The
connection diagram
shows you how to connect the cables to the
unit. The green lead is used as reference.
When FED is
Enabled
on the
FED Setup
page, the
Confirmation
window pops up displaying how to
connect your cables at the beginning of the test.
The FED allows you to remotely place a
strap
(to
short together) the T-R/A-B pair at the far end for
K-Test RFL.
Summary of Contents for MAX-635G
Page 1: ...User Guide Copper and G fast VDSL2 ADSL2 Multi play Test Set MAX 635G www EXFO com ...
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Page 270: ...TDR 260 MAX 635G Continuous Examples of Common Faults Short Fault ...
Page 271: ...TDR Copper and G fast VDSL2 ADSL2 Multi play Test Set 261 Continuous Open ...
Page 272: ...TDR 262 MAX 635G Continuous Bridged Tap ...
Page 273: ...TDR Copper and G fast VDSL2 ADSL2 Multi play Test Set 263 Continuous Splice Joint ...
Page 274: ...TDR 264 MAX 635G Continuous Peak Function ...
Page 275: ...TDR Copper and G fast VDSL2 ADSL2 Multi play Test Set 265 Continuous Dual Trace View ...
Page 276: ...TDR 266 MAX 635G Continuous Load Coil ...
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