-1
ENGINEER
TET
LINE
-[2n
Measure the dc loop
resistance. (DP 1007)
l
[281
0
l
Is the loop
.
1[291-,
Install new cable.
resistance less than
l 175 Ohm?
. No
.
.-
.
r--E301
L,
Measure loop insertion
loss at 256 kHz.
l
[311
--J----.
l Is the insertion loss
0
.
less
than 12.0
dB?
l Yes
.
.:.
.
.
.
.
._
.i.
.2
.
.,
. _
-
.