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(Cat. No. 1770-SC)

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This publication describes the Data Highway Station Connector and the installation

procedures for connecting the station connector to a Data Highway or Data Highway

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Each station connector includes the following:

• Junction box with removable cover, and terminal block wired with the following:

- 0.05 mfd 500V DC capacitor (terminals 4 and 5)

- Jumper (terminals 7 and 9)

- Ground wire (terminal 10) and earth ground wire with lug

• Packet containing:

-D-shell cable connector hood

- 15-pin female connector

- Packet of assembly hardware for the cable connector

Supersedes Publication 1770-2.20C — February, 1990

To make reliable connections, you should observe the following wiring

recommendations:

• Use Twinaxial Cable (cat. no. 1770-CD, Belden 9463 or equivalent) for the trunkline

and droplines.

• Be sure to connect the ground wire from the station connector to the earth ground.

• Route the twinaxial cable away from sources of electrical interference.

• Make trunkline connections to the upper side of the station connector; dropline

and earth ground connections to the lower side.

By observing these recommendations and those in the Data Highway Cable Assembly

Use the following procedures to properly install each station connector. Read the

entire section before performing the procedures.

11..

Cut the dropline cable to your required length.

22

. Prepare the dropline cable for assembly. First carefully remove about one inch of

insulation, foil, braided shield, and filler cord from one end of the cable, freeing

the shield drain wire, clear, and blue insulated wires. Strip about 1/8 inch of

insulation from the ends of the insulated wires.

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33..

Insert the prepared cable end through the circular hole in the hood of the D-shell

connector. Insert about 1/2 inch of shrink tubing over the ends of the three

conductors.

44..

Solder the blue, clear, and drain wires into their corresponding connector pins in

the back of the 15 pin female connector. Connect the blue wire to pin 6, drain wire

to pin 7, and clear wire to pin 8.

55..

Slide the shrink tubing forward over the soldered connections and shrink the

insulated wires. Strip about 1/4 inch of insulation from the ends of the insulated

wires.

11..

Remove the cover and the terminal blocks from the enclosure and mount the

enclosure at the point where you want to add the dropline.

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Removing the terminal block allows you to make connections to the

screw-clamp terminals more easily.

22..

Cut the trunkline cable. Feed the incoming and outgoing trunkline cable through

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11..

To maintain signal integrity, twist together the same colour wires from each

22..

Feed the free end of the dropline cable through its cable clamp at the bottom of

44..

Connect dropline cable wires, blue to terminal 6 and clear to terminal 8 as shown

55..

Secure the trunkline and dropline cables by tightening the cable clamps.

This part of the procedure applies only to the first and last station connectors on the

trunkline.

To maintain the station connector’s NEMA type 13 rating, plug the unused

trunkline cable clamp on the first and last station connectors. Use the cable plug

provided in the packet. Tighten the cable clamp to hold the cable plug in place.

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The first and last station connectors refer to the physical location along

the trunkline and not to station addresses. Station addresses are independent of

physical locations.

11..

Attach the station connector ground wire to earth ground. The lug accepts a

number of 10 screws.

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For more information on installing a Data Highway or Data Highway Plus cable

installation, refer to the Data Highway Cable Assembly and Installation Manual

(publication 1770-6.2.1).

• Terminals for trunkline and dropline

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