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EK-CABLE-IN-001

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Document:	ThinWire Ethernet Coaxial Cable Connector Installation Card
Order Number:	EK-CABLE-IN
Revision:	001
Pages:	12
Original Filename:

OCR Text

mflgnauw

EK-CABLE-IN-001

ThinWire Ethernet COAXIAL CABLE

CONNECTOR INSTALLATION CARD

IF YOU NEED HELP
Call the Ethernet Customer Support Center
Toll-free 1-800-525-7104

IMPORTANT
The following four-part procedure must be performed by

service personnel who have completed training in the use of
ThinWire cable stripper and BNC connector tools.
This four-part procedure consists of:
A. Adjusting the stripper tool
B.

Stripping the cable

C. Attaching the male BNC connector
D. Checking the completed cable.

ADJUST STRIPPER

The ThinWire cable stripper contains two cutting blades
that you must adjust to correctly cut the cable jacket and
braid of the ThinWire cable.

The following procedure

describes the adjustment of the cable stripper blades.
NOTE:

Use a scrap piece of ThinWire cable for the

following adfjustment procedure.

Check that the

blue

V-block (Amp

603997-2)

installed in the stripper.

BLUE V-BLOCK

MKV86-0677
SHR-0232-86

Using the stripper hex wrench (supplied), turn set

screws A and

counterclockwise

until

resistance. This retracts the blades.

SET SCREW B
SET SCREW A

MKV86-0567
SHR-0231-86

Turn set screw A 2-1/2 turns clockwise.

Turn set screw B 1-1/2 turns clockwise.

you feel

Push the slide to position 3.

ROTATE LOCKING
HANDLE DOWNWARD

MKV86-0568
SHR-0137-86

Open

the stripper by rotating the

locking

handle

downward.
7.

With the locking handle facing you, place the cable in

the stripper from the left side with the end of the cable
flush with the right side of the stripper.

MKV86-0569
SHR-0136-86

Close the stripper and rotate it five times around the
cable.

MKV86-0571
SHR-0230-86

9.
10.
11.

Open the stripper and remove the cable.
Remove the cut jacket and braid from the cable.
Check the practice cuts on the cable to make sure
that:

Cut
A cuts only the jacket, exposing the braid. This
cut should not damage ANY braid strands.

DIELECTRIC
BRAID

JACKET

CUT A
CuT B

SHR-0131-86

CutB cutsthe jacket, braid, and foil. This cut should
not damage the dielectric beneath the foil. When

stripping the cable to install a male connector, you
must remove the foil.

Even after you adjust the blade depth repeatedly, cut B
may leave a few strands of the braid that you must
remove with diagonal cutters.

12.

Adjust the stripper blades as needed to produce the

correct stripper cut. Turning the set screws clockwise
extends the blades, increasing the depth of the cut.
Turning the set screws counterclockwise retracts the
blades, decreasing the depth of the cut.

ADJUSTMENT
SCREWS

CLOCKWISE INCREASES
DEPTH OF CUT ')

COUNTER CLOCKWISE
DECREASES DEPTH
OF CUT
D

MKV86-0667
SHR-0138-86

NOTE:

produce

correct cuts, replace the blade cassette.

If repeated

adjustment

fails

See step

13.

Install a new set of blades.

BLADE CASSETTE

29-26133.00

EACH CASSETTE CONTAINS 4 BLADES.
CASSETTE CAN BE REVERSED EACH

TIME A BLADE SET WEARS OUT.

NUMBERS 1 TO 4 ARE PRINTED INSIDE

CASSETTE TO DETERMINE USAGE.

TO CHANGE OR REVERSE CASSETTE, MOVE
LOCKING HANDLE DOWN, THEN PUSH
CASSETTE OUT OF STRIPPER BY INSERTING
WRENCH THROUGH HOLE IN BOTTOM OF .
TOOL

SHA 0133 86

14.

Discard the practice piece of ThinWire cable.

This completes the Adjust Stripper procedure.

STRIP CABLE

Prepare for male ThinWire BNC connector installation by
stripping the cable as follows.*

Use the diagonal cutters to trim the end of the cable

flush.
2.

Mark the jacket of the cable 3/16 inch from the end of
the cable. This is the center conductor length.

——.l 3/16 Io—

MKV86-0578
SHR-0132-86

Place the ferrule on the cable.

Push the slide to position 1.

Bringthecableinfrom the right side of the stripperand

place the mark on the cable over the right blade.

K‘ fi fimm
)

FERRULE

{

MARK OVER RIGHT
CUTTING BLADE
RIGHT BLADE

MKV86-0577
SHR 0135-86

Close the stripper and rotate it around the cable five
times.

Open the stripper and remove the cable.

* The cable strip dimensions are different for male and
female (bulkhead) ThinWire connectors.

Remove the cut jacket, braid, and dielectric from the
cable, exposing the center conductor.

10.

Push the slide to position 3.

Mark the jacket of the cable 1/16 inch from the end of
the jacket (not the end of the exposed center con-

ductor). This is the exposed dielectric length,

MARK
FERRULE

JACKET

—»| 3/16 |e—
g

—
11.

————

L——me

SHR 0129.86

Bring the cable in from the left side of the stripper and
place a mark on the cable over the right blade.

MARK OVER

RIGHT BLADE

LEFT SIDE

MKV86-0573
SHR-0134-86

12.

Close the stripper and rotate it five times around the
cable.

Open the stripper and remove the cable.

Remove the cut jacket and braid from the cable. If the
stripper has not fully cut 1/16 inch off the cable, or if
the cut has spiralled off the end of cable, return to step
1 and repeat the procedure.

Check the cable to make sure that:

® The

first

stripper

blade

cuts

only the

jacket,

exposing the braid. This blade should not cut ANY
braid strands.

® The second stripper blade cuts the jacket, braid,
and foil. This blade should not cut the dielectric
beneath the foil.

16.

Remove the 1/16 inch strip of foil from the top of the
dielectric to expose the dielectric.

NOTE: Removing the foil ensures that the center

conductor (when installed)

will not short to the

foil.

17.

Check the stripped cable.

Even after you adjust the blade depth repeatedly, cutC
may leave a few strands of braid that you must remove
with diagonal cutters.

If cut A cuts any braid strands or cut B cuts the
dielectric, return to step1 and repeat the procedure. If
the second attempt fails to produce properly stripped
cable, the stripper is not correctly adjusted. Return to
the Adjust Stripper procedure.
COAXIAL

CABLE JACKET

3/16 7/32
l ”

AND SHEATH

l T l

FERRULE

CUT B

MKV 86-0574
SHR-0130-86

This completes the Strip Cable procedure.

C.
1.

ATTACH MALE BNC CONNECTOR
Slip the center contact onto the center conductor.
Make sure that the center contact butts against the
dielectric. Make sure that the foil does not touch the
center contact.

DIELECTRIC

[T
———

CENTER
CONTACT

CENTER
CONDUCTOR

—

SHR-0127 86

Crimp on the center contact using the crimping tool.
NOTE: The center contact should be firmly attached
to the center conductor after crimping.

Insert the center contact through the center of the
connector, slipping the support sleeve of the connector under the braid and over the dielectric and
braid.

CRIMPED CONTACT

SUPPORT SLEEVE
CONNECTOR

Slide the ferrule over the braid, ensuring contact with
the connector shoulder.

=
&
3

SHR-0128-86

|22
I

SLIDE BRAID OVER

CONNECTOR SUPPORT SLEEVE
SHR-0124-86

SLIDE FERRULE FORWARD
OVER SUPPORT SLEEVE

CONNECTOR SHOULDER
SHR-0125-86

Crimp the ferrule onto the cable using the crimping
tool.

CRIMPED FERRULE

SHR-0126 86

This completes the Attach Connector procedure.

CHECK CABLE

Check the cable for continuity and shorts after connectors

are attached to BOTH ends of the ThinWire cable.
1.

Installa50 ohm terminator on one end of the ThinWire
cable using a T-connector or barrel connector.

Checkforcable continuity onthe other end of the cable
using an ohmmeter.

Connectthe ohmmeterleadstothe center pin ofthe
connector and the connector body.

The ohmmeter reading MUST be 60 ohms or less,

indicating continuity in both the shield and center
conductor.
3.

Remove the 50 ohm terminator.

Check for open circuit (no connection) between the
center conductor and the
meter.

shield,

using

the

ohm-

Connect the ohmmeter leads to the center pin and
the connector body.

The ohmmeter MUST read infinite ohms, indicating
no shorts

between

the

shield

and

center con-

ductor.

This completes the Check Cable procedure.

1st Edition, October

1986

Copyright © 1986 by Digital Equipment Corporation
All Rights Reserved
Printed in U.S.A.
The information in this document is subject to change
without notice and should not be construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any

errors that may appear in this document.

The following are trademarks of Digital Equipment
Corporation.

Eflaflanw

DECwriter

RSX

DEC

DIBOL

ThinWire

DECmate

MASSBUS

UNIBUS

DECnet

PDP

VAX

DECsystem-10

Professional

VMS

DECSYSTEM-20

Rainbow

DECUS

RSTS

Work Processor