AT&T T1 Use and care manual
BELL
SYSTEM
PRACTICES
AT
&
TCo
Standard
DIGITAL TRANSMISSION SYSTEMS
T1 DIGITAL
LINE
SECTION
365-222-200
Issue
6,
July
1977
INSTALLATION
AND
REPLACEMENT
OF OFFICE
REPEATERS
The purpose of
this
section is
to
provide procedures for installation
and
replacement of office repeaters
in
the
office repeater bays
(201
ORB,
206
ORB,
and T1C/T1 ORB).
This section is reissued to include
the
231-
and
236-type repeaters and to revise Table A. Changes
are
indicated by arrows. This reissue does not affect
the
Equipment Test List.
Table A is a summary of the office and bridging repeaters
and
features applicable to each repeater.
The EXCP and some bridging repeaters
must
be used
with
a DSX-1. All others (except bridging)
may be used with or without a
DSX
-1.
•The intermixing of low power
(60
rnA)
and
standard
power
(140
rnA) repeaters will cause maintenance
and
service problems. Therefore,
it
is recommended
that
these repeaters never be
intermi~ed
in
the
same span line,
apparatus
case,
or
office repeater shelf pair. Also
the
intermixing of integrated
and
nonintegrated circuit repeaters will cause maintenance problems
.•
Procedures
are
provided in this section for testing bridging repeaters
after
installation
or
replacement.
All
other
office repeaters are tested as a
part
of
the
digital line.
Note:
T1
digital lines must have a bipolar signal capplied to prevent oscillation in
the
event
that
they
are
equipped with nonintegrated circuit-type repeaters.
The following
tasks
are contained in
this
section:
TASK
PAGE
A-Installation
of
201B
or
201E Repeater
in
a
201
ORB
. 2
B-Replacement
of
201B
or
201E Repeater in a
201
ORB
3
C-Installation
of
201K
Repeater in a
201
ORB
4
D-Replacement
of a Repeater in a
201
ORB
With a 201K Repeater 4
E-Installation
of a
208D
•or
208AB• Repeater in a
201
ORB
4
F-Replacement
of a Repeater in a
201
ORB
With a
208D
•or
208AB• Repeater
5
G-Installation
and Testing of 201-Type Bridging Repeater
NOTICE
Not for use or disclosure outside
the
Bell System except under written agreement
Printed in U.S.A.
5
Page 1
SECTION
365-222-200
TASK
H-Installation
of 206-Type Office Repeater
I-
Replacement of
206-
Type Office Repeater
J-Installation
and Testing of 206-Type Bridging Repeater
K-Installation
of 221-Type Office Repeater
L-Replacement
of 221-Type Office Repeater
M-Installation
and Testing of 221-Type Bridging Repeater
N-•Installation
of 231-Type Office Repeater
0-Replacement
of 231-Type Office Repeater
P-Installation
and Testing of 231-Type Bridging Repeater
Q-Installation
of 236-Type Office Repeater
R-Replacement
of 236-Type Office Repeater
S-Installation
and Testing of 236-Type Bridging Repeater•
APPARATUS:
•Note:
The following apparatus is required for testing bridging repeaters only
.•
2-P3BH
Cords
1-380B
Plug (135-ohm termination)
1-J98725AD Fault-Locating Test Set
(25AD
FLTS) or J98710F
Fault
Locating Set (10F
FLS)
1-J98725AC Office Bipolar Violation Detector
(OBVD)
or J98710G
Error
Detecting
Set
(EDS)
STEP
PROCEDURE
A. Installation of
2018
or
201E Repeater
in
a 201
ORB
PAGE
7
8
9
11
11
11
13
13
14
15
16
17
1 Select a
201B
or 201E repeater and provide for the loop power option by tightening
the
L screws and removing the T screws.
Page 2
ISS
6,
SECTION
365-222-200
STEP
PROCEDURE
2
Insert
the
proper 836-type
LBO
networks in side 1
and
side 2 of the
repeater
as
required
by
the
span line record card. Securely tighten
the
screws in each network to provide a
good electrical connection.
Note:
If
repeaters
are
checked for continuity,
it
must
be done
after
the
power option
is provided
and
the 836-type networks
are
in place
as
outlined in Section 365-221-500.
3
Insert
the repeater into
the
repeater opening of the proper position in the
span
terminating
assembly (STA) as determined from
the
span line record card.
B.
Replacement of 201B
or
201E Repeater
in
a 201
ORB
Caution: To
prevent
interruption
of
service
when
performing
this
task,
service
must
be
patched
off
per
Section
865-226-500.
1 Turn down power on
the
faulty repeater (see Fig. 1).
Note:
Power for
the
office repeaters
in
a
201
ORB
can be
turned
down in only two
ways, depending upon how
the
repeater is powered.
(a) Powered Separately: To
turn
down power, remove
the
office
repeater
OFF
REP
fuse from the control
unit
located directly below
the
faulty repeater.
(b) Powered in Series With Line:
To
turn
down power, remove
the
two upper fuses
associated with line 1 from the control
unit
directly below
the
faulty repeater.
Caution:
Removal
of
the
fuses
from
the
wrong
control
unit
will
interrupt
service
on
one
or
more
working
lines
associated
with
other
Tl
digital
lines.
2 Remove
the
faulty repeater from the STA.
3 Select a new
201B
or
201E repeater; provide L power option by
tightening
the
L screws
and removing
the
T screws.
4 Remove the 836-type
LBO
network from side 1 of
the
faulty
repeater
and
insert
it
into
side 1 of the replacement repeater. Similarly,
insert
the
836-type network
in
side 2 of
the replacement repeater. Securely tighten
the
screws on each network to provide a good
electrical connection.
5 Verify the 836-type network assignments with
the
span line record card before
the
repeater
is placed in the STA.
Note:
If
repeaters
are
checked for continuity,
it
must
be done
after
the
power option
is provided and the 836-type networks
are
in place
as
outlined in Section 365-221-500.
6
Insert
the
replacement repeater into the proper position in the STA.
7 Restore power on the line by replacing
the
proper fuses removed in Step
1.
Page 3
SECTION
365-222-200
STEP
PROCEDURE
8 Notify the office
at
the other end of
the
span
that
the
repeater has been replaced and
the
line is ready for test.
C.
Installation
of
201K Repeater in a 201
ORB
1 Select a
201K
repeater.
2 Insert the
201K
repeater into the repeater opening of the proper position in
the
STA as
determined from
the
span line record card.
D.
Replacement of a Repeater in a 201
ORB
With a 201K Repeater
Caution: To
prevent
interruption
of
service
when
performing
this
task,
service
must
be
patched
off
per
Section
365-226-500.
1 Turn down power on the faulty repeater (see Fig.
1).
Note:
Power for
the
office repeaters in a
201
ORB
can be turned down in two ways,
depending upon how the repeater is powered.
(a) Powered Separately:
To
turn
down power, remove
the
office repeater OFF REP
fuse from the control unit located directly below the faulty repeater.
(b) Powered in Series With Line:
To
turn down power, remove the two upper fuses
associated with line 1 from
the
control
unit
directly below
the
faulty repeater.
Caution:
Removal
of
the
fuses
from
the
wrong
control
unit
will
interrupt
service
on
one
or
more
working
lines
associated
with
other
Tl
digital
lines.
2 Remove
the
faulty repeater from the
STA.
3 Select a
201K
and insert
it
into the repeater opening of the STA.
4 Restore power on
the
line by replacing the proper fuses removed in Step
1.
5 Notify the office
at
the other end of the span
that
the
repeater has been replaced and
the line is ready for test.
E.
Installation of
d
2080
tor
208AB.
Repeater in a 201
ORB
1 Select a
208D
tor
208AB• repeater and a
215A
adapter.
2
tlf
repeater being installed is a
208AB,
provide loop powering by setting powering option
to L.•
3 Insert the
215A
adapter into
the
repeater opening of
the
proper position in
the
STA as
determined from
the
span line record card.
Page
4
ISS
6,
SECTION
365-222.;,200
STEP
PROCEDURE
4
Insert
the
208D
•or
208AB• repeater into
the
215A
adapter.
F.
Replacement
of
a Repeater
in
a 201
ORB
With a
2080
tor
208AB.
Repeater
Caution: To
prevent
interruption
of
service
when
performing
this
task,
service
must
be
patched
off
per
Section
365-226-500.
1 Turn down power on
the
faulty repeater (see Fig. 1).
Note:
Power for
the
office repeaters can be
turned
down in only two ways, depending
upon how
the
repeater is powered.
(a) Powered Separately:
To
turn
down power, remove
the
office
repeater
OFF
REP
fuse from the control
unit
located directly below the faulty repeater.
(b) Powered in Series With Line:
To
turn
down power, remove the two upper fuses
associated with line 1 from the control
unit
directly below
the
faulty
repeater.
Caution:
Removal
of
the
fuses
from
the
wrong
control
unit
will
interrupt
service
on
one
or
more
working
lines
associated
with
other
Tl
digital
lines.
2 Remove
the
faulty
repeater
from the STA.
3
If
the
faulty repeater is a
201B,
201E,
•or
201K,. select a
215A
adapter
and
insert
it
into
the
repeater opening of
the
STA.
4 Select a
208D
•or
208AB• repeater.
5
•If
the repeater being installed is a
208AB,
provide loop powering by
setting
powering
option
to
L
.•
6
Insert
the
208D
•or
208AB• repeater into
the
215A
adapter.
7 Restore power on
the
line by replacing the proper fuses removed in Step
1.
8 Notify
the
office
at
the
other
end of
the
span
that
the
repeater
has
been replaced
and
the
line is ready for test.
G. Installation and
Testing
201-Type Bridging Repeater
1 Select a 201-type bridging repeater.
Note:
The power option for these repeaters is provided internally. No
LBO
network is
required.
2
Insert
the
repeater into
the
repeater opening of
the
proper position in
the
STAas
determined
froni
the
span line record card.
Page 5
SECTION
365-222-200
STEP
PROCEDURE
3
Insert
the
proper fuse in the office repeater OFF REP fuse holder on
the
control
unit
located directly below the bridging repeater (Fig. 1).
4 The repeater may now be tested to ensure proper operation.
5 Plug
the
-48V cord of the 10F FLS or 25AD FLTS into one of
the
-48V TST jacks on
the
jack mounting panel.
6
Plug
the
-48V cord of the EDS
or
OBVD
into another of
the
-48V TST jacks on
the
jack
mounting panel.
7 Connect a P3BH cord from
the
TEST jack of
the
10F FLS
or
the
GEN
MON
jack of
the
25AD
FLTS
to
the
IN
1 jack on
the
proper position of
the
STA.
Note: No plug should be in
the
GEN
OUT
jack of
the
10F FLS, since
this
disables
the
TEST
jack
output.
8
If
the
25AD FLTS is used,
set
the
CLOCK
RATE switch to
Tl.
Note: The
T1
indicator lights, indicating
that
the
T1
clock
in
the
FLTS
has
been selected
and
the
FLTS is powered.
9
Set
the
FUNCTION switch on
the
lOF FLS to BIPOLAR SIGNAL
or
the
25AD FLTS to
BI-POLAR SIGNAL and
the
PULSE PERIOD (lOF FLS)
to
REF
or PULSE DENSITY
(25AD FLTS) switch to
11
REF.
10
If
the
bridging. repeater is not connected to a
spare
line, terminate
the
OUT
1
jack
with
a
386B
plug.
11
Connect a P3BH cord from
the
IN
jack
of
the
EDS
or
the
SiG IN
jaek
of
the
OBVD
to
the
MON
(side 1
or
2)·
jaclt
of
the
repeater under test.
12
If
the
EDS'
is used, continue with Step·
13.
If
the
OBVD
is used,
proeeecl
to
Step
17.
•
Note;
Il
any
of
the
following requirements
are
not met, replace
the
bridging
repeater~
If
the
requir.ements are stili not met; refer
to
80~9'7080-01
.•
f3
Set
th:e·
PULSES~ERROR&
switch
on
the
EDS
to PULSES.
llequiretne:at: The lamp
on;
the
EDS is lighted, indieating proper regeneration
of
pulses
by
the
repeater.
Note: The lamp may light continuously
or
flfcker slightly.
Either
of these conditions
meets
the
l'ef}Uirement.
14 Set
the
PULSES-ERRORS switch
to
ERRORS.
Requirement:
The lamp
is
extinguished,. indicating error-free operation of
the
repeater.
ISS
6,
SECTION
365-222-200
STEP
PROCEDURE
Note:
The lamp
must
be completely extinguished.
It
must
not
flash occasionally.
15
Set
the
FUNCTION switch on the 10F FLS to MEAS 3
or
the
25AD FLTS to MEAS 3
SIGNAL.
Requirement:
The lamp on the EDS is lighted, indicating errors.
Note:
The lamp may light continuously
or
flicker slightly.
Either
of
these conditions
meets the requirement.
16
Proceed to Step
19.
17
Set
the MODE switch on
the
OBVD
to
BV,
the
TIMER switch to BEGIN,
and
depress
the START/RESET pushbutton.
Requirement:
The counter sets
to
all zeros,
the
UNDER TEST light is lighted,
and
all
other
lamps
are
extinguished.
18
Set
the
FUNCTION switch on the 10F FLS to MEAS 3
or
the 25AD FLTS to MEAS 3
SIGNAL.
Requirement:
The BIPOLAR VIOLATIONS lamp on
the
OBVD
is lighted
and
the
counter
indicates errors.
19
Repeat Steps
•9•
through
18
to
test
side 2 of
the
bridging repeater.
20
When
the
requirements
are
met
for sides 1 and
2,
remove all plugs
and
test
connedions.
H. Installation of 206-Type Office Repeater
1 Select
the
206-type repeater shown on
the
span line record card.
2 Provide the proper power option by
turning
down
the
option screws
in
accordance
with
Section 365-223-500
and
the
span line record card. Turn back all unused option screws
two complete
turns
counterclockwise (Fig.
2,
3,
or
4).
3 •Record options selected
and
repeater type on Form E-5416, Office Repeater Record Card
(Fig.
5)
.•
4
If
the
repeater is a nonintegrated circuit type, select
the
836-type
LBO
network shown on
the
span line record card.
If
the
selected repeater is
an
integrated circuit type, proceed
to Step 6 because no
LBO
is required; otherwise, continue with Step
5.
5
Insert
the selected network into
the
repeater. Securely tighten the screws in the network
to provide a good electrical connection. Proceed to Step 10.
6
If
the repeater is an EXCP type (Table
A),
continue with Step
7;
otherwise, proceed to
Step
10.
Page 7
SECTION
365-222-200
STEP
PROCEDURE
7 Select a 983-type equalizer according to span line record card and Table B for installation
in
the
repeater.
8 Connect the pigtailed wires on
the
equalizer to the points on
the
repeater
as
shown in
Fig.
4.
9 Install the equalizer in the repeater (Fig.
6)
and insert the correct color plug button into
the
hole in the faceplate of the repeater.
Note:
To
restrict the use of 206-type repeater positions to
the
correct type
of
repeater,
keys are provided in each connector on
the
repeater shelves. These keys
are
normally
provided in jack contact 8 of the connector.
10
Note
the
required keying listed
i:n
Table C for
the
206-type repeater being installed.
11
If
necessary, relocate the key to the proper jack contact.
12
Insert
the
repeater into the assigned shelf position in
the
repeater bay
per
the span line
record card.
13
•verify
that
the span number office repeater type and powering, power loov voltage and
current, and repeater powering options are recorded
on
Form E-5416, Office Repeater
Record Card (Fig.
5)
.•
I. Replacement
of
206-Type Office Repeater
Caution:
To
prevent
interruption
of
service
when
performhlg
this
task,
service
must
be
patched
off
per
Section
365-226-500.
1 Remove the faulty repeater from
the
repeater bay.
2 Select a
206
replacement repeater.
3 Refer
to
Form E-5416 (Fig.
5)
and apply the same power options (Fig.
2,
3,
or
4)
as
those
used
on
the faulty repeater. Turn back all unused option screws two ce.inplete
tarns
counterclockwise.
Warning: A
fire
hazard
exists
if
ground
option
P in
the
206B
or
206F
repeater
is
improperly
applied
for
178-
or
260-volt
line
powerifig.
Refer
to
Section
365-223-500'
for
instructions
before
replacbtg
tbe
repeater.
4
•verify
that
the
replacement repeater has
the
same type fuses installed
in
the
front panel
as those in the faulty repeater
.•
5
If
the repeater being replaced is an integrated circuit type,
pr@ceed
to Step.
8;
otherwise,
continue with Step
6.
Page 8
(
ISS
6,
SECTION
365-222-200
STEP
PROCEDURE
6 Remove the 836-type
LBO
network from
the
faulty repeater
and
insert
the
network
in
the
mounting location on the replacement repeater. Securely tighten
the
screws on
the
network to provide a good electrical connection.
7 Verify
the
836-type network assignment with
the
span line record card before
the
new
repeater is placed in
the
repeater bay. Proceed to Step
12.
8
If
the
repeater is
an
EXCP type (Table A), continue with Step
9;
otherwise, proceed to
Step
12.
9 Remove the 983-type equalizer
and
the
plug button from
the
faulty repeater.
10
Connect
the
pigtailed wires on
the
equalizer to
the
points on the replacement
repeater
as
shown in Fig.
4.
11
Install the equalizer in
the
repeater (Fig. 6)
and
insert
the
plug
button
into
the
hole
in
the faceplate of the repeater.
12
Insert
the
replacement repeater into
the
assigned shelf position in
the
repeater
bay.
13
Notify the office
at
the
other end of
the
span
that
the
repeater
has
been replaced
and
that
the line is ready for test.
•Note:
If
the replacement
repeater
is
an
EXCP type
and
the
problem is still not cleared,
there
is a remote possibility
that
the
983-type equalizer is faulty. Therefore, replace
the
983-type equalizer with a known-good equalizer and
repeat
Step
13
.•
J.
Installation
and
Testing
of
206-Type
Bridging Repeater
1 Select a 206-type bridging repeater.
Note:
The power option for
this
repeater is provided internally. No line build-out
network is required.
2
Insert
the
repeater into
the
proper shelf (position
26)
in
the
repeater bay
as
determined
from the span line record card.
3 The repeater may now be tested to ensure proper operation.
4 Plug
the
-48V cord of
the
10F FLS
or
25AD FLTS into one of the -48V TST jacks on
the repeater bay jack field
or
the
DSX-1
maintenance panel.
5 Plug
the
-48V cord of
the
EDS
or
OBVD
into
the
-48V TST
jack
on
the
repeater
bay
jack
field
•or
the
DSX
-1
maintenance
paneU
6 Connect a P3BH cord from
the
TEST
jack
of the 10F FLS or
the
GEN
MON
jack
of
the
25AD FLTS to the B IN jack on
the
repeater
front
panel or
the
IN
jack
at
position
25
of
the
DSX-1 panel for
the
repeater under test.
Page
9
SECTION
365-222-200
STEP
PROCEDURE
Note:
No
plug should
be
in
the
GEN
OUT
jack of
the
10F FLS, since this disables
the
TEST jack output.
7
If
the
25AD
FLTS is used, set
the
CLOCK
RATE switch to
Tl.
Note:
The
T1
indicator lights,.indicating
that
the
T1
clock in the FLTS has been selected
and
that
the
FLTS is powered.
8 Set the FUNCTION switch on
the
10F FLS to BIPOLAR SIGNAL
or
the
25AD FLTS to
BI-POLAR SIGNAL and
the
PULSE PERIOD (10F FLS) to REF or PULSE DENSITY
(25AD
FLTS) switch to
11
REF.
9 Terminate
the
R
OUT
jack (if equipped) on the repeater with a
386B
plug.
10
Connect a P3BH cord from the IN jack of the EDS or the SIG IN jack of the
OBVD
to
the
MON
jack on
the
repeater
•or
the
BR
MON
jack on the
DSX-1
maintenance
paneU
11
If
the EDS is used, continue with Step
12.
If
the
OBVD
is used, proceed to Step
16.
•Note:
If
the following requirements are not met, replace the bridging repeater.
If
the
requirements are still not met, refer
to
SD-97080-02
.•
12
Set
the
PULSES-ERRORS switch
on
the EDS to PULSES.
Requirement:
The lamp on the EDS is lighted, indicating proper regeneration of pulses
by the repeater.
Note:
The lamp may light continuously
or
flicker slightly.
Either
of these conditions
meets the requirement.
13
Set the PULSES-ERRORS switch to ERRORS.
Requirement:
The lamp on the EDS is extinguished, indicating error-free operation of
the
repeater.
Note:
The lamp must
be
completely extinguished.
It
must not flash occasionally.
14
Set the FUNCTION switch on
the
lOF
FLS to MEAS 3 or
the
25AD
FLTS to MEAS 3
SIGNAL.
Requirement:
The lamp on
the
EDS is lighted, indicating errors.
Note:
The lamp may light continuously
or
flicker slightly.
Either
of these conditions
meets the requirement.
15
Proceed to Step
18.
16
Set the
MODE
switch
on
the
OBVD
to
BV,
the timer switch to BEGIN, and depress
the
START/RESET pushbutton.
Page
10
STEP
ISS
6,
SECTION
365-222-200
PROCEDURE
Requirement:
The counter sets to all zeros,
the
UNDER TEST light is lighted,
and
all
other
lamps
are
extinguished.
17
Set
the
FUNCTION switch on
the
10F FLS to MEAS 3
or
the
25AD FLTS to MEAS 3
SIGNAL.
Requirement:
The BIPOLAR VIOLATIONS lamp on
the
OBVD
is lighted
and
the
counter
indicates errors.
18
Remove all plugs
and
test
connections.
K.
Installation of 221-Type Office Repeater
1
•Refer
to Table D
and
verify
that
the
correct ED-3C585-30
or
ED-3C744-30-type equalizer
is installed in the repeater shelf being equipped.t
2 Select the 221-type repeater shown on
the
span line record card.
3 Provide
the
proper power options
in
accordance with Section 365-223-500
and
the
span line
record card. Turn back any unused option screws two complete
turns
counterclockwise
(Fig.
7).
4
Insert
the
repeater into
the
assigned shelf position in the
repeater
bay
per
the span line
record card.
5
•verify
that
the span number, office repeater type
and
powering, power loop voltage
and
current,
and
repeater powering options
are
recorded on
Form
E-5416, Office Repeater Bay
Record Card (Fig.
5).
t
L.
Replacement of 221-Type Office Repeater
Caution: To
prevent
interruption
of
service
when
perf.orming
this
task,
service
must
be
patched
off
per
Section
365-226-500.
1 Remove
the
faulty repeater from the repeater bay.
2 Select a
221
replacement repeater.
3 Refer
to
Form
E-5416 (Fig. 5)
and
apply
the
same options (Fig.
7)
that
were used on
the
faulty repeater. Turn back
any
unused option screws two complete
turns
counterclockwise.
4
Insert
the
replacement repeater into
the
assigned shelf position in
the
repeater
bay.
5 Notify the office
at
the
other
end of
the
span
that
the
repeater
has
been replaced
and
the
line is ready for test.
M.
Installation and
Testing
of 221-Type Bridging Repeater
1 Select a 221-type bridging repeater.
Page
11
SECTION
365-222-200
STEP
PROCEDURE
Note:
The power option for this repeater is provided internally.
2 Insert
the
repeater into the proper shelf (position
26)
in the repeater bay as determined
from
the
span line record card.
3 The repeater may now be tested to ensure proper operation.
4 Plug the -48V cord of the 10F FLS or
25AD
FLTS into one of the -48V TST jacks on
the repeater bay jack field or
the
DSX-1
maintenance panel.
5 Plug the -48V cord of
the
EDS or
OBVD
into one of the -48V TST jacks on
the
repeater
bay jack field
or
the
DSX-1
maintenance panel.
6 Connect a P3BH cord from the TEST jack of the 10F FLS
or
the
GEN
MON
jack of
the
25AD
FLTS to
the
B IN jack on
the
jack field or
the
IN jack
at
position
25
of
the
DSX-1
panel.
tNote:
No
plug should be in the GEN
OUT
jack of
the
10F FLS, since
this
disables
the TEST jack output•
7
If
the
25AD
FLTS is used, set the
CLOCK
RATE switch
to
Tl.
Note:
The
T1
indicator lights, indicating
that
the
T1
clock in the FLTS has been selected
and
that
the
FLTS is powered.
8 Set the FUNCTION switch on the
lOF
FLS to BIPOLAR SIGNAL
or
the
25AD
FLTS to
BI-POLAR SIGNAL and the PULSE PERIOD (10F FLS) to REF
or
PULSE DENSITY
(25AD
FLTS) switch
to
11
REF.
9 Connect a P3BH cord from
the
IN jack of
the
EDS or
the
SIG IN jack of the
OBVD
to
the
BR
MON
jack on the
DSX-1
maintenance panel or
the
MON
jack on
the
jack field.
10
If
the EDS is used, continue with Step
11.
If
the
OBVD
is used, proceed
to
Step
15.
tNote:
If
the following requirements are not met, replace the bridging repeater.
If
the
requirements are still not met, refer to SD-3C252-0l.•
11
Set the PULSES-ERRORS switch on
the
EDS to PULSES.
Requirement:
The lamp on
the
EDS is lighted, indicating proper regeneration of pulses
by
the
repeater.
Note:
The lamp may light continuously or flicker slightly.
Either
of these conditions
meets
the
requirement.
12
Set the PULSES-ERRORS switch to ERRORS.
Page 12
Requirement:
The lamp on the EDS is extinguished, indicating error-free operation of
the repeater.
ISS
6,
SECTION
365-222-200
STEP
PROCEDURE
Note:
The lamp
must
be completely extinguished.
It
must
not
flash occasionally.
13
Set
the
FUNCTION switch on
the
10F FLS to MEAS 3
or
the
25AD FLTS to MEAS 3
SIGNAL.
Requirement:
The
lamp
on
the
EDS is lighted, indicating errors.
Note:
The lamp may
light
continuously
or
flicker slightly.
Either
of these conditions
meets the requirement.
14
Proceed to Step
17.
15
Set the MODE switch on
the
OBVD
to
BV
and depress
the
START/RESET pushbutton.
Requirement:
The counter sets to all zeros and no lamps
are
lighted.
16
Set
the
FUNCTION switch on
the
10F FLS to MEAS 3
or
the
25AD FLTS
to
MEAS 3
SIGNAL.
Requirement:
The BIPOLAR VIOLATIONS
lamp
on
the
OBVD
is lighted
and
the
counter
indicates errors.
17
Remove all
test
connections and plugs.
•
N.
Installation of
231-Type
Office Repeaters
1 Refer to Table D and verify
that
the
correct ED-3C585-30
or
ED-3C744-30-type equalizer
is installed in
the
repeater shelf being equipped.
2 Select
the
231-type repeater shown on
the
span line record card.
3 Provide
the
proper power options in accordance with Section 365-223-500
and
the
span line
record card. Turn back any unused option screws two complete
turns
counterclockwise
(Fig.
8).
4 Verify
that
the
span number, office repeater type
and
powering, power loop voltage
and
current, and repeater powering options
are
recorded on Form E-5416, Office Repeater Bay
Record Card (Fig.
5).
5 Insert
the
repeater into
the
assigned shelf position
in
the
repeater
bay
per
span line
record card.
0.
Replacement of
231-Type
Office Repeater
Caution:
To
prevent
interruption
o£
service
when
performing
this
task,
service
must
be
patched
o££
per
Section
365-226-500.
1 Remove the faulty repeater from
the
repeater bay.
Page
13
SECTION
365-222-200
STEP
PROCEDURE
2 Select a
231
replacement repeater.
3 Refer to Form E-5416 (Fig.
5)
and apply the same options (Fig.
8)
that
were used on
the
faulty repeater. Turn back any unused option screws two complete
turns
counterclockwise.
4 Insert the replacement repeater into the assigned shelf position in
the
repeater bay.
5 Notify the office
at
the other end of the span
that
the repeater has been replaced and
the
line is ready for test.
P.
Installation and
Testing
of 231-Type Bridging Repeater
1 Select a 231-type bridging repeater.
2 Insert the repeater into the proper shelf (position
26)
in the repeater bay as determined
from the span line record card.
Note:
The repeater may now be tested to ensure proper operation.
3 Plug the -48V cord of the 10F FLS or
25AD
FLTS into one of
the
-48V TST jacks on
the repeater bay jack field or
the
DSX-1
maintenance panel.
4 Plug the -48V cord of the EDS
or
OBVD
into one of the -48V jacks on
the
repeater bay
jack field or the
DSX-1
maintenance panel.
5 Connect a P3BH cord from the TEST jack on
the
10F FLS
or
the GEN
MON
jack
on
the
25AD
FLTS to the B IN jack on the jack field on the IN jack
at
position
25
of
the
DSX-1
panel.
Note:
No
plug should
be
in the GEN
OUT
jack of the 10F FLS, since
this
disables
the
TEST jack output.
6
If
the
25AD
FLTS is used,
set
the
CLOCK
RATE switch to Tl.
Note:
The
T1
indicator lights, indicating
that
the
T1
clock in
the
FLTS has been selected
and
that
the
FLTS is powered.
7 Set the FUNCTION switch on
the
FLS
to
BIPOLAR SIGNAL or on the FLTS to BI-POLAR
SIGNAL and the PULSE PERIOD (10F FLS) to REF
or
PULSE DENSITY
(25AD
FLTS)
switch to
11
REF.
8 Connect a P3BH cord from
the
IN jack of
the
EDS or the SIG IN jack of the
OBVD
to
the
BR
MON
jack on the
DSX-1
maintenance panel
or
the
MON
jack on
the
jack field for
the repeater under test.
Note:
If
any of
the
following requirements are not met, replace
the
bridging repeater.
If the requirements are still not met, refer to
SD-3C252-02.
9
If
the EDS is used, continue with Step
10;
if
the
OBVD
is used proceed to Step
14.
Page
14
ISS
6,
SECTION
365-222-200
STEP
PROCEDURE
10
Set
the
PULSES-ERRORS switch on
the
EDS
to
PULSES.
Requirement:
The lamp on the EDS is lighted, indicating proper regeneration
of
pulses
by
the
repeater.
Note:
The lamp
may
light continuously
or
flicker slightly.
Either
of these conditions
meets
the
requirement.
11
Set
the
PULSES-ERRORS switch to ERRORS.
Requirement:
The lamp on
the
EDS is extinguished, indicating error-free operation of
the
repeater.
Note:
The lamp must be completely extinguished.
It
must
not flash occasionally.
12
Set
the
FUNCTION switch on
the
FLS to MEAS 3
or
on
the
FLTS
to
MEAS 3 SIGNAL.
Requirement:
The lamp on the EDS is lighted, indicating errors.
Note:
The lamp may light continuously or flicker slightly.
Either
of
these conditions
meets
the
requirement.
13
Proceed to Step
16.
14
Set the MODE switch on
the
OBVD
to
BV
and depress
the
START/RESET pushbutton.
Requirement:
The counter resets to all zeros
and
no lamps
are
lighted.
15
Set
the
FUNCTION switch on
the
FLS to MEAS 3
or
the
FLTS to MEAS 3 SIGNAL.
Requirement:
The BIPOLAR VIOLATIONS lamp on
the
OBVD
is lighted
and
the
counter
indicates errors.
16
Remove all plugs and
test
connections.
Q.
Installation of 236-
Type
Office Repeater
1
Select
the
236-type repeater shown on the span line record card.
2 Provide the proper power options by
turning
down
the
option screws
and
setting
the
switches in accordance with Section 365-223-500
and
the
span line record card.
Turn
back
all unused option screws two complete
turns
counterclockwise (Fig. 8).
3
If
the repeater is an EXCP type (Table A), continue with Step
4;
otherwise, proceed to
Step
7.
4 Select a 983-type equalizer according to
the
span line record card
and
Table B for installation
in the repeater.
Page 15
SECTION
365-222-200
STEP
PROCEDURE
5 Connect
the
pigtailed wires on
the
equalizer to
the
points on
the
repeater
as
shown
in
Fig.
10.
6 Install
the
equalizer in the repeater (Fig.
11
and
insert
the
correct color plug
button
into
the
hole in
the
faceplate of
the
repeater.
Note:
To
restrict
the
use of 236-type repeater positions to
the
correct type
of
repeater,
keys
are
provided
in
each connector on
the
repeater shelves. These keys
are
normally
provided in
jack
contact number 8
of
the
connector.
7 Refer to Table E for
the
required keying for
the
236-type
repeater
being installed.
8
If
necessary, relocate
the
key
to
the
proper
jack
contact.
9
Insert
the repeater into the assigned shelf position in
the
repeater
bay
per
the
span line
record card.
10
Verify
that
the span number, office repeater type and powering, power loop voltage
and
current, and
repeater
powering options are recorded on
Form
E-5416, Office Repeater
Record Card (Fig.
5).
R.
Replacement
of
236-Type Office Repeater
Caution: To
prevent
interruption
of
service
when
performing
this
task,
service
must
be
patched
off
per
Section
865-226-500.
1 Remove
the
faulty repeater from
the
repeater
bay.
2 Select a 236-type replacement repeater.
3 Refer to Form E-5416 (Fig.
5)
and apply
the
same power options (Fig. 9)
that
were used
in
the
faulty repeater. Turnback all unused option screws two complete
turns
counterclockwise.
4 Set switch
S203
to
X for 140-mA line
current
or
to W for 60-mA line
current
(Fig. 9).
5 Verify
that
the
replacement repeater has the same type fuses installed in
the
faceplate as
those in the faulty repeater.
6
If
the replacement repeater is
an
EXCP type (Table A), continue with Step
7;
otherwise,
proceed to Step 10.
7 Remove
the
983-type equalizer
and
plug from
the
faulty repeater.
8 Connect
the
pigtailed leads on
the
equalizer to
the
points on
the
replacement
repeater
as
shown in Fig. 10.
9 Install
the
equalizer into
the
repeater (Fig. 11) and
insert
the
plug
button
into
the
hole
in
the
faceplate of
the
replacement repeater.
Page
16
ISS
6,
SECTION
365-222-200
STEP
PROCEDURE
10
Insert
the
replacement repeater into
the
assigned shelf position
in
the
repeater
bay.
11
Notify the office
at
the
other
end of the span
that
the
repeater
has
been replaced
and
that
the line is ready for test.
Note:
If
the
replacement
repeater
is
an
EXCP type
and
the
problem is still
not
cleared,
there
is a remote possibility
that
the
983-type equalizer is faulty. Therefore, replace
the
983-type equalizer with a known-good equalizer
and
repeat Step
11
.•
S.
Installation
and
Testing of 236-Type
~ridging
Repeater
1 Select a 236-type bridging repeater.
2 Set
the
LOCAL/DSX option to DSX
if
the
office is equipped with a DSX-1; otherwise,
set
this
option to
the
LOCAL position.
3
Insert
the repeater into
the
proper shelf (position
26)
in the
repeater
bay
as
determined
from the span line record card.
4 The repeater may now
be
tested to ensure proper operation.
5 Plug
the
-48V cord of the FLTS
or
FLS into one of
the
-48V TST jacks on
the
repeater
bay jack field
or
the DSX-1 maintenance panel.
6 Plug the -48V cord of
the
EDS
or
OBVD
into a -48V TST jack on the
jack
field
or
the
DSX
-1
maintenance panel.
7 Connect a P3BH cord from
the
TEST jack (10F FLS)
or
the
GEN
MON
jack
(25AD FLTS)
to the B IN jack on
the
faceplate of
the
repeater
or
the
IN
jack
at
position
25
of
the
DSX-1 panel for
the
repeater under test.
Note:
No
plug should
be
in
the
GEN OUT
jack
of the 10F FLS, since
this
would disable
the
test
signal.
8
If
the
25AD FLTS is used,
set
the CLOCK RATE switch to
Tl.
Note:
The
T1
indicator lights, indicating
that
the
T1
clock in
the
FLTS
has
been selected
and
that
the FLTS is powered.
9 Set
the
FUNCTION switch on
the
FLS to BIPOLAR SIGNAL
or
on
the
FLTS to BI-POLAR
SIGNAL and
the
PULSE PERIOD (10F FLS) to
REF
or
PULSE DENSITY (25AD FLTS)
switch to
11
REF.
10
Terminate
the
R
OUT
jack
(if equipped) on the repeater with a 386B plug.
11
Connect a P3BH cord from
the
IN jack of
the
EDS
or
the
SIG IN
jack
of
the
OBVD
to
the
MON
jack on
the
repeater
or
the BR
MON
jack on
the
DSX-1
maintenance panel.
12
If
the EDS is used, continue with Step
13;
if
the
OBVD
is used, proceed to Step
17.
Page
17
SECTION
365-222-200
STEP
PROCEDURE
Note:
If
the following requirements are not met, replace
the
bridging repeater.
If
the
requirements are .still not met, refer to
SD-97080-02.
13
Set the PULSES-ERRORS switch on the EDS
to
PULSES.
Requirement:
The lamp on the EDS is lighted, indicating proper regeneration of pulses
by
the
repeater.
Note:
The lamp may light continuously
or
flicker slightly.
Either
of these. conditions
meets the requirement.
14
Set the PULSES-ERRORS switch
to
ERRORS.
Requirement:
The lamp on the EDS is extinguished, indicating error-free operation of
the repeater.
Note:
The lamp must remain extinguished.
It
must not flash occasionally.
15
Set
the
FUNCTION switch on
the
FLTS to MEAS 3 SIGNAL
or
on the FLS to MEAS
3.
Requirement:
The lamp on
the
EDS is lighted, indicatin errors.
Note:
The lamp may light continuously or flicker slightly.
Either
condition meets
the
requirement.
16
Proceed to Step
19.
17
Set the
MODE
switch
on
the
OBVD
to
BV,
the
TIMER switch to BEGIN, and depress
the START/RESET pushbutton.
Requirement:
The counter sets to all zeros, the UNDER TEST lamp is lighted, and
all other lamps are extinguished.
18
Set the FUNCTION switch on
the
FLS to MEAS 3
or
on the FLTS to MEAS 3 SIGNAL.
Requirement:
The BIPOLAR VIOLATIONS lamp on
the
OBVD
is lighted and the counter
indicates errors.
19
Remove all plugs and test connections.•
Page 18
(
COOE
INT£GRATED
TY!'E REPL.Ac:l-
OPTIONS
CIRCUIT
MINT
2018
NO
OFFICE/
201E
T
/L
POWERING
LINE
201K
201C
NO
BRIDGING
201F
NONE
201L
201E
NO
OFFICE/
201K
T/L POWERING
LINE
208D
201F
NO
BRIDGING
201L
NONE
201K
YES
OFFICE/
208D
NONE
LINE
201L
YES
BRIDGING
-
NONE
206A
NO
OFFICE
206H
LINE POWERING
206B
NO
OFFICE
206J
LINE POWERING/
GRD
206C
NO
BRIDGING
206R
NONE
206D
NO
OFFICE
206K
LINE POWERING
206E
NO
OFFICE
206L
LINE POWERING
206F
No
·
OFFICE
206M LINE POWERING
206G
NO
OFFICE
206N
LINE POWERING
206H
YES
OFFICE
236AA
LINE POWERING
206J
YES
OFFICE
236AA
LINE POWERING/
GRD
206K
YES
OFFICE
236AB
LINE POWERING
206L
YES
OFFICE
236AC
LINE POWERING
206M
YES
OFFICE
236AC
LINE POWERING/
GRD
206N
YES
OFFICE
236AD
LINE POWERING
206P
NO
BRIDGING--
206S
NONE
DSX
206R
YES
BRIDGING
236P
NONE
OFFICE
AND
BRIDGING
REPEATER
CSEENOTE
H
MOUNTING LINE
POWERI
NG
STA
LOOP
STA NONE
STA LOOP
STA NONE
STA LOOP
STA NONE
206
ORB/LTU/
48V
STM
206
ORB
/
LTU
/
130V
STM
206
ORB
/LTU/ NONE
STM
206
ORB/LTU/
LOOP
STM
206
ORB
/
LTU/
48V
STM
206
ORB
/
LTU
/
140mA
STM
206
ORB/LTU
/ LOOP
STM
206
ORB
/
LTU
/
48V
STM
206
ORB/LTU
/
130V
STM
206
ORB
/
LTU
/ LOOP
STM
206
ORB/LTU
/
48V
STM
2060RB/LTU/
130V
STM
206
ORB/LTU
/ LOOP
STM
206
ORB/LTU
/ NONE
STM
206
ORB
/
LTU/
N
ONE
STM
REGULATOR
CURRENT
NONE
NONE
NONE
NONE
NONE
NONE
140mA
140mA
NONE
NONE
140mA
140mA
NONE
140mA
140mA
NONE
140
mA
140mA
NONE
NONE
NONE
RiGiiNERATOR
LINE
CURRENT
MATCHING
EXCP
140mA
836
LBO
NO
140mA
NONE
NO
140mA
836
LBO
NO
140mA
NONE
NO
140mA
836
LBO
NO
140mA
NONE
NO
140mA
836
LB0/7
.6
dB
NO
ART
LINE
140mA
836
LB0/7.6
dB
NO
ART
LINE
140mA
NONE
NO
140mA
836
LB0/7
.6 dB NO
ART
LINE
140mA
836
LB0
/
3dB
NO
PAD
140mA
836
LB0
/3
dB NO
PAD
140mA
836LB0/3dB
NO
PAD
140mA
ALB0
/
7.6d8
NO
ART
LINE
140mA
ALB0
/
7.5d8
NO
ART
LINE
140mA
ALB0
/
7.6d8
NO
ART
LINE
140mA
ALB0
/3
dB
PAD
NO
140mA
ALB0
/3
dB
PAD
NO
14
0mA
ALB0
/
3dBPAD
NO
140mA
NONE
NO
140mA
NONE
NO
NOTES
CODE
NTEGRATED
TYPE
REPLAC!-
CIRCUIT
MINT
2
206S
YES BRIDGING-
236P
.
DSX
2
206T
YES
OFFICE
236E
2
200U
YES
OFFICE
236E
2
206W
YES
OFFICE
236F
2
,3
200Y
YES
OFFICE
236G
2
206AA
YES
OFFICE
236G
2
206AB
YES
OFFICE
236H
2
2
208D
YES
OFFICE
/ 208AB
LINE
2
221A
YES
OFFICE
231A
2
221B
YES
OFFICE
231B
2
221C
YES
BRIDGING
231C
231A
YES
OFFICE
NONE
2
-
231B
YES
OFFICE
NONE
-
231C
YES
BRIDGING NONE-
231D
YES
OFFICE
NONE
-
231E
YES
OFFICE
NONE
-
236A
YES
OFFICE
23
6AA
-
236B
YES
OFFICE
236AB
-
2
236C
YES
OFFICE
236AC
236D
YES
OFFICE
2
36
AD
-
OPTIONS
NONE
LINE
POWERING/
CURRENT
LINE
POWERING/
CURRENT
/
GRD
LINEPOWERING
LINE POWERING/
CURRENT
LINE POWERING/
CURRENT
/
GRD
LINE POWERING
NONE
LINEPOWERING/
VOLTAGE/
GRD
LINEPOWERING
NONE
LINE POWERING/
CU
RRENT
/
GRD
/
VOLTAGE
LINE POWERING
NONE
LINE POWERING/
GRD
/VOLTAGE
LINE POWERING
LINE POWERING/
GRD/VOLTAGE
LINE POWERING
LINE POWERING/
GRD/VOLTAGE
LINE POWERING
OFFICE
AND
BRIDGING REPEATERS
(SEE
NOTE
11
LINE
MOUNTING POWERING
206
ORB
/
LTU
/ NONE
STM
206
ORB
/L
TU
/
48V
STM
206
ORB
/
LTU
/
130V
STM
206
ORB
/LTU/
LOOP
STM
206
ORB
/
LT
U/
48V
STM
206
OR
B/LTU/
130V
STM
200
ORB/LTU
/ LOOP
STM
STA
LOOP
T1C/T10RB
48
/1
30V
TlC
/T
lORB
LOOP
T1C/T10RB
NONE
T1C
/T
1
ORB
48
/1
30V
TlC/T10RB
LOOP
T1C/T1
ORB
NONE
T1C/Tl
ORB
48
/lSOV
TlC/TlORB
LOOP
206
ORB
/LTU/
48
/1
30V
STM
206
ORB
/LTU/ LOOP
STM
206
ORB
/LTU/
48
/lSOV
STM
206
ORB
/LTU/ LOOP
STM
RECut.ATOR
CURRENT
NONE
60
/1
40mA
60
/
140
rnA
NONE
60
/
140
rnA
60
/
140
mA
NONE
NONE
60
/14
0mA
NONE
NONE
60
/
140
rnA
NONE
NONE
60mA
60mA
60mA
NONE
SOmA
NONE
REGEN
E
RATOR
LINE EXCP
NO
TES
CURRENT
MA
TCHING
14
0mA
NONE
NO
-
14
0mA
ALB0
/7
.5
&
4
.6
YES
4
dB
ART
L
INE
140mA
ALB0
/
7.5
&
4.5
YES
4
dB
ART
LINE
14
0
mA
ALB0
/7
.5
&
4
.6
YES
4
dB
ART
LI
NE
14
0mA
ALB0
/3
&
0.5
YES 4
dB
PAD
140mA
ALB0
/3 &
0.5
YES
4
dB
PAD
140mA
ALB0
/3
&0.5
YES
4
dB
PAD
14
0
mA
ALBO NO 3
140mA
ALBO
/7.5
&
4.5 YES 5
dB
ART
LINE
140mA
ALB0
/
7.6
&
4.5
YES
6
dB
ART
LINE
14
0
mA
NONE
YES
5
60
/
140
rnA
ALB0
/
7.5
&
4.
5
YES
6
dB
ART
LIN
E
60
/
140
rnA
ALB0
/7.5
&:
4.5 YES 5
dB
ART
LINE
60
/
140
rnA
NONE YES
6
60mA
ALB0
/7.
5
&
4.5
YES
6,
7
dB
ART
LINE
60m.A
ALB0
/
7.5
&:
4.5
YES 5 , 7
dB
ART
LINE
SOmA
ALB0
/7
.5
dB
NO
-
ART
LINE
60mA
ALB0
/7.5
dB
NO
-
ART
LINE
60mA
ALB0
/8
dB
PAD
NO
-
60mA
ALB0
/3
dB
PAD NO
-
CODE
I
NTEGRATED
TYPE
REPLACE·
OPT
I
ONS
CI
RCUIT
MENT
236E
YES OFFICE NONE LINE POWERING/
CU
RRENT
/
GRD
/
VO
LTAGE
236F
YES
OFFICE
NONE
LINE POWERING
236G
YES
OFFICE
NONE
LINE POWER
IN
G/
CURRENT
/
GRD
/
VOLTAGE
236H
YES
OFF
I
CE
NONE
LINE POWER
IN
G
2S6J
YES
OFFI
CE
NONE
LINE POWERING/
GRD
/
VOL
TA
GE
236K
YES
OFFICE
NONE L
INE
POWE
RING
236L
YES
OFFICE
NONE
LI
NE POWERING/
GRD
/V
OLTAGE
236M
YES
OFF
IC
E
NONE
LIN
E POWERING
236P
YES
BRIDGING NONE
DSX
/LOCAL
Notes
:
1.
Abbrevia
tions
used
are
as
follows:
STA
•
J98710
Span
Tennina
ting
Auembly
STM
tT
ABLE
A (
Cant,.
OFFICE
AND
BRIDGING
REPEATERS
(
SI!E
NOTE 1)
MOUNTING LINE
POW!RING
2060RB
/LTU/
48
/
13
0V
STM
206
ORB
/
LT
U/ LOOP
STM
200
ORB
/
LTU
/
48
/
130V
STM
206
ORB
/
LTU
/ LOOP
STM
206
ORB
/LTU/
48
/
130V
STM
206
ORB
/L
TU
/ LOOP
STM
200
ORB
/LTU/
48
/
130V
STM
2000RB
/LTU/ LOOP
STM
206
ORB
/
LTU
/ NONE
STM
REG
U
LATOR
CURRENT
60
/14
0mA
NONE
60
/
14
0
rnA
NONE
60mA
N
ONE
60 mA
NONE
NONE
LTU
EXCP
20
60RB
T1C{T10RB
ALBO
•
J98728AA
,
AB,
or
AC
Span
T
erminating
Module
=
J98713F
Line
Te
rminating
Unit
=
Extended
Cross-Connect
Pa
ckage (
re
quires
983
, ED-3C58Q.30·, or ED-
3C7
6
5-30
·ty
pe
eq
ualizer)
LBO
•
J98710J
, K,
or
L
Office
Repeater
Bay
• J
98725A,
B, C, or D
Office
R
ep
ea
ter
Bay
E
Automatic
Line
Bu
il
dout
• Line
Buildout
2. Manufacture
di
scontinu
ed
.
8.
The
208-type
repeater
must
be
equipped
with
a
215A
adapter.
4.
Repeater
must
be
eq
uip
ped
w
it
h a
9~3-type
eq
ualizer
(
see
Tab
le
B).
5.
O
RB
mu
st
be
equipped
wi
th
ED-
3C58
5-30· or ED-
3C765
·
30
-
ty
pe
eq
ualizer
(see
Table
D).
6.
Can
be
used w
it
h
or
with
o
ut
a
digit
al
cro~~&o-conne
ct
by
use
of
DSX/LOCAL
option
.
7.
Use
with
MAT
cabl
e.
ISS
6,
SECTION
365-222-200
R!GENERATDR
LINE EXCP
CURRENT
MATCHI
NG
NO
T
ES
60
/
14
0 rnA
ALB0
/7.5
&
4
.5
Y
ES
4
dB
AR
T
LI
NE
60
/
14
0
rnA
ALB0
/
7.5
&
4.5
YES
4
dB
ART
LINE
60
/
140
rnA A
LB0
/3
&
0.
5d8
YES
4
PAD
60
/
140
rnA
ALB0
/3
&
0.
5d8
YE
S 4
PAD
60mA
ALB0
/
7.
5
dB
NO
7
ART
LINE
60mA
ALB0
/7.
6dB
NO 7
AR
T LINE
SOmA
ALB0 /7.5
&
4.5 YES
4,
7
dB
ART
LINE
SO
mA AL
B0
/7.5
&
4.5
YES
4,
7
dB
AR
T LINE
60
/
140mA
NONE NO 6
Page
19/20
(
',
\
.
" .
ISS
6,
SECTION
365-222-200
4
TABLE
B
983-TYPE
EQUALIZER
SELECTION
DATA
CABLE
LENGTH
USE PLUG
BUTTON
TO BE
EQUALIZED*
TYPE
COLOR
0
to
220
feet A Red
220
to
440
feet B Blue
440
to
655
feet c Green
*
Cable length specified
is
for
ABAM cable.
TABLE
C
REQUIRED
KEYING
FOR 206 ORB EQUIPPED WITH
206-TYPE REPEATERS
206-TYPE REPEATER CODE
BEING
INSTALLED
PROVIDE
KEY
IN
JACK
CONTACT
206B,
F,
J,
M,
U, AA 8
206C,P,R,S
10
2060,
G, K, N,
W,
AB
14
206A,E,H,L,T,Y
20
Page
21
