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Page Title:
Patching Operations Conducted at the VF and Digital Patching Facilities |
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 TM 11-5895-878-14&P
Objective
Situation
Procedure
Notes
c. Set all plugs into jacks
simultaneously.
d. Place a 600-ohm term. Plug
in the channel No. 5
TRANS LINE jack.
a. Cable pair change must
Test maintenance substitution
a. Place two patch cord plugs
At red patch jackfield
be made at local station
of spare cable circuit (No. 2)
loosely into channel No. 2
(fig. 2-3), transfer of
and second location before
for the on-line circuit (No. 5).
REC LINE and TRANS LINE
active circuit to spare
subscriber equipment
jacks.
cable pairs (fig. 3-3).
b.
Procedures must be
b. Place plugs on other end of
performed simultaneously
patch cords loosely into the
at both locations
channel No. 5 REC EQUIP and
TRANS
EQUIP
jacks
respectively
c.
Set all plugs into jacks
simultaneously.
a. At black patch bay:
Test maintenance substitution
At both black and red
(1) Place two patch cord
of spare crypto equipment
patch jackfields (fig. 2-
plugs loosely into channel No. 5
(channel No. 2) for on-line
16), substitution of
REC LINE and TRANS LINE
equipment (channel No. 5).
crypto
equipment
jacks.
strings (fig. 3-4).
(2) Place plugs on other end
of patch cords loosely into
channel No. 2 REC EQUIP and
TRANS
EQUIP
jacks
respectively.
b. At red patch bay:
(1) Place two patch cord
plugs loosely into channel No. 2
REC EQUIP and TRANS
EQUIP jacks.
(2) Place plugs on other end
of patch cords loosely into
Channel No. 5 REC LINE and
TRANS LINE jacks respectively.
c.
Set all plugs in jacks
simultaneously.
d. Place a 600-ohm terminal
plug in the TRANS LINE jack of
channel 2.
3-4
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