Alpha Communications TekTone NC377 Installation & Operating Instructions Manual - Page 3

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Chapter 2—Installation

Mounting & Cable Routing

Verify that power to the unit is disconnected before proceeding.

Please follow these steps. (Note: The terms zone and input are

used interchangeably in this manual and on the programming

screens.)

1. Remove the four Phillips-head screws located on top of the

NC377 Paging Interface Adapter.

2. Remove the top cover and set aside.

3. Using the hardware supplied, mount the NC377.

4. If the cable you are using has bundled wires, strip the outside

covering back 24 inches.

5. Loop the cable in a U shape and attach it to the NC377 using

the tie-wraps provided. (See Figure 2.)

6. Route the wires through the access holes on the back of the

unit.

7. With the front of the unit facing you, inputs 1–32 are on the

left and 33–64 are on the right. (See Figure 3.)

8. Route your cables so that they do not cross over the board

inside the NC377 Paging Interface Adapter.

Nurse Call Wire Connections

Referring to Figure 3, route and connect the individual lamp

select wires.

1. If all the inputs have a common ground, it is not necessary

to attach individual grounds to each input on the terminal

block. Simply attach the common ground to terminal number

2(–) and place an internal jumper on the other terminals

(negative terminals 2, 4, 6, 8, etc.).

2. Attach the first Lamp Select Wire (positive wire) to terminal

1(+).

3. Continue until all inputs are connected.

4. Replace the top cover and the four Phillips-head screws.

Power Up Sequence

Referring to Figure 4 and the following steps, connect all the

required cables.

1. Connect the power lead to the rear of the unit, and apply

power.

2. On the front panel, turn on the power switch. The green

power LED indicator will light.

4. Connect the RS232 serial cable from the NC377 Paging

Interface Adapter to the paging transmitter's input. (The

RS232 cable is provided with the paging transmitter. To build

a longer cable or a new cable, see the paging transmitter's

manual.)

5. Apply power to the paging transmitter.

6. The NC377 is now ready to be programmed.

Chapter 3—Programming Plan

This section outlines the overall programming plan. Refer to

Chapter 4—Programming for step-by-step programming

instructions. (Note: The terms zone and input are used

interchangeably in this manual and on the programming screens.)

Before use, perform Global Settings Programming on each

NC377. The NC377 Paging Interface Adapter may be ordered

with either 32 or 64 points. Configure each NC377 as either a

master or a slave. There must always be one master, but there

may be up to eight slaves.

1. Each NC377 Paging Interface Adapter will be connected

separately for the global settings programming. After pro-

gramming, they will be connected together for system

operation.

2. The gray crossover cable is used to connect the PC/laptop

to the NC377 for programming.

3. If multiple NC377s will be connected together, program the

slaves first. Only these four fields are programmed on the

slave units:

• Host System (TekTone

• Unit ID: Slave

• Slave #

• Total Number of Contacts (32 or 64)

4. Label each NC377 with its Slave # or as the Master so it can

be identified in the future.

5. Program the master NC377 after all slaves have been pro-

grammed. Contact input programming is performed only on

the master NC377.

6. Select TekTone

as the host system on both masters and

slaves.

7. Each NC377 has a maximum capacity of 64 inputs, with a total

576 when all 8 slaves are connected. The contact numbers

run in sequence:

Master

1–64

Slave1

65–128

Slave2

129–192

Slave3

193–256

Slave4

257–320

Slave5

321–384

Slave6

385–448

Slave7

449–512

Slave8

513–576

If an NC377 has fewer than 64 inputs connected, program

only the inputs that are connected. The contacts can be

connected in any order, i.e. 1–16 or 32–48.

After global settings programming is complete, perform

Contact Input Programming on the master NC377 to program

the inputs being used.

IL871 NC377 Paging Interface Adapter Manual • Page 3

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