EXFO MaxTester 635 - Manual (Page 221)

Copper and VDSL2/ADSL2+ Multi-play Test Set 213
12 RFL
Resistance fault locator (RFL) testing is a powerful means to locate
resistive faults such as shorts, grounds, and battery crosses. Before
performing RFL tests, install the strap(s) at the other end of the cable. Use
of an oscillator as a far end strap is not recommended. It will induce errors.
Single Pair
The RFL Single Pair or 2-wire test allows you to locate
resistive faults between tip to ground, or ring to
ground. By default, the unit assumes that the fault
cable is connected to ring.
Connect the strap to the far end of the wires
connected to T/A and R/B.

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
2-wire RFL.
The Confirmation diagram uses graphic and
textual components.

Proceed button closes the hookup diagram prompt and starts the
test.

Cancel button closes the hookup diagram prompt only.
Note: Results are less accurate than a separate good pair setup.