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.
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