AT&T Bell System Plant Series Installation Manual

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BELL SYSTEM PRACTICES
Plant Series
SECTION 314-640-200
Issue 2, October, 1965
AT&TCo Standard
WLR-2 WIDEBAND LOOP REPEATER
INSTALLATION
CONTENTS PAGE
1. GENERAL 1
2.
DESCRIPTION . 1
3.
PRECAUTIONS
1
4. POWERING CONDITIONS . 2
5. ORDER WIRE .
3
·,; 1. GENERAL
1.01
The WLR-2 wideband loop repeater is in-
tended as a 2-way repeater on 4-wire local
loop facilities for data transmission in the 10.2- to
51-kc band. The repeater can be obtained in a
moistureproof No. 470A apparatus case for pole
or manhole mounting. When conditions require
that more than one WLR-2 repeater be mounted
at an above ground location, an enclosure
( J70159E) is provided in the form of a KS-14296
pole-mounted cabinet equipped with a terminal
block, stub cable, and mounting rack facility for
up to six bay-mounted WLR-2 repeaters per
J70159D. Instructions, found in Section
640-300-200, covering the installation of outdoor
cabinets for Nl carrier telephone systems, can be
applied to the J70159E.
1.02
This section is reissued to describe the
470A apparatus case, to revise the installa-
tion procedures, and to correct option connections.
Since this reissue covers a general revision, mar-
ginal arrows ordinarily used to indicate changes
have been omitted.
1.03
The work authorization will indicate the
location of the apparatus case and the
splicing arrangement. There should be no devia-
tion from the specified mounting arrangement,
especially in a manhole. If there is, it may ad-
versely affect future plans.
1.04
Each enclosure containing one WLR-2
basic framework accommodates two plug-
in J70159C amplifiers, two plug-in 382A equal-
izers, and one plug-in power select adjustor. It is
hermetically sealed when properly closed and
maintained under air pressure.
1.05
Detailed instructions for mounting the ap-
paratus case are given in Section
632-515-206. Instructions covering the removal
and reinstallation of the container of the appa-
ratus case are given in Section 632-525-210.
2. DESCRIPTION
2.01
Each WLR-2 wideband loop repeater
(J70159B, List 2) will be supplied with
hardware for installing the apparatus case in a
manhole or on a pole.
2.02
Furnished as part of the apparatus case is
a 15-foot length of CA1984 stub cable con-
sisting of 16 pairs of 24-gauge polyvinyl-chloride
(PVC) insulated wires in a PVC jacket covered
with a lead shield. The apparatus case can also
be furnished with a 10-foot or a 20-foot stub
cable.
2.03
The WLR-2 repeater, illustrated in Fig. 1,
consists of a 470A apparatus case, a basic
repeater framework, a 572A-6 connecting block
(lightning protector) factory-wired inside. the
case, and a plug-in . ED-73186 power select ad-
justor. It can be equipped with two plug-in
J70159C amplifiers, two plug-in 382A equalizers,
or shorting plugs as required.
3. PRECAUTIONS
3.01
Always relieve the pressure on the appa-
ratus case before loosening the V-band
clamp preparatory to removing the container.
©
American Telephone and Telegraph Company, 1965
Printed in U.S.A. Page 1