Rauland TC4221 User Manual

TC4221 Digital Display

Installation

KI-1698B

RAUUNDBORG

CORPORATION l 3450 West Oakton Street, Skokie, Illinois 60076-2951 l [phone]

General Information

Description Parts Enclosed

This unit comes assembled on a

verts a standard push-button phone to a display phone that

can be used with Telecenter V, Telecenter IV, Telecenter

TCS, Telecenter System 21, or TCll00 systems. It has a

16-digit LCD readout and a “beeper” to annunciate call-ins.
The TC4221 can be used as a direct replacement for a TC4220,
but it offers a number of new features as well, notably its
capability of being individually addressed in a Telecenter V
and Telecenter System 21 system.

The display matches the Rauland TC4204 Administrative
Telephone. It can be used with many other DTMF (dual-fre­quency, multi-tone) desk phones, the only limitation being
aesthetics. Figure 1 shows a typical placement.

metal

baseplate. It con-

The following parts should come with the display:
4 1” x 2 1/2” double-sided foam strip, for fastening the

display to the telephone.

4 Nine-inch, six-conductor modular phone cord.

Number of Displays

Telecenter V and Telecenter System 21 systems have a
single display driver that can support up to 2,000 feet of
cabling and 16 displays. Each display may be assigned its own
address with its DIP switch (see “Setting the DIP Switch,” the
final section of this manual).

Telecenter 1100, Telecenter IV, and Telecenter TCS sys­tems can support up to 1,000 feet of cabling and three displays
per display driver. Telecenter 1100 systems have one display
driver, Telecenter IV systems have two display drivers, and
Telecenter TCS systems have six display drivers.

Related Manuals

See the appropriate system manuals for details on wiring

and programming:

Telecenter V

The main wiring diagram (KM1035) includes the wiring
for display phones. It is part of the Telecenter V drawings
manual, included in KI-1687.

Telecenter IV

The wiring diagram for display telephones (KM0684) is in
the Drawings and Glossary manual (KI-1587), which is part of
the main manuals (KI-1435). For programming information,
see KI-1584, also part of the main manuals.

Telecenter TCS

Figure 1. Typical Placement of Display

91993

RAULAND-BORG CORPORATION.

Orig. 2/92. Rev. 8/92, 9/93. 169802

Printed in U.S.A. Page 1 of 5

The wiring diagram for display telephones (KM0837) is in

Diagnostics, Troubleshooting, and Drawings (KI-1550), which

TC4221 Digital Display

is part of the main manuals (KI-1579). For programming
information, see KI-1538, also part of the main manuals.

Telecenter 1100

The display module is recommended for Telecenter 1100
systems, which include the CTLl Telephone Interface. See
drawings KM1032 and KM1033 in the CTLl ChronoCom

Installation

Mechanical

Note: For Telecenter V and Telecenter System 21 systems,
set each display’s DIP switch before attaching the display to
a telephone. See “Setting the DIP Switch,” on the following

page.

Before attaching the assembly to the telephone, install the
nine-inch modular phone cord and anything else that might
be covered by the assembly. Use the double-sided foam to
secure the assembly to the phone. Do not cover anything
with the foam that you might need to remove in the future
(e.g., the cord that runs from the display unit to the phone.

Caution: The foam bonds tightly to any hard surface it
touches. To assure a smooth installation, stick the foam to
the display unit first. Before touching the foam to the tele­phone, make sure the display is properly aligned.

Wiring

This section tells the basic connections. For details, con-

sult the system manuals listed above and the manufacturer’s
manual for any other component (e.g., a special-features
telephone).

Observe Proper Polarity!

This is especially important for the display, which could
suffer damage from several minutes of exposure to reverse
polarity. To avoid damage, promptly disconnect the display
if it does not show the sign-on message a few seconds after

you turn on the system. Check all wiring connections and
the polarity of the modular connectors on the desk cord and
the cord between the display and the phone.

Telephone Interface Module installation manual (KI-1681).
For programming information, see the 2524 programming
manual (KI-1629).

Telecenter System 21

The wiring diagram for display phones (KM1121) is in the

Installation Drawings manual, KI-1767.

Right Way

Terminal side

Wrong Way

Terminal side Tab side

-d

Figure 2. Phone-Connector Polarity

Modular Cords

From a Modular Jack to the Display: For a standard
phone, use a standard four-conductor, six-position line cord.
Make sure that the modular plugs’ terminals are on the same
side of the cord (see Figure 2).

From the Display Jack to the Telephone: Use the sup­plied nine-inch

Use the following table or the wiring diagrams listed
earlier for the wiring connections.

Modular

Block

Terminal

Red
Green

cord.

Connections

Display and Telephone Connections

TCIV/TCS

LLM

Terminals

Telephone

R
T

R
T

I

The positive LCD output should be connected to the “BK”
(“Black”) terminal, and the negative output to the “YL”
(“Yellow”) terminal of the telephone terminal block. See

Figure 2 and the wiring table.

Page 2

Black (+)

Yellow (-)

Blue
White

LCD+
LCD­(shield to Z)

see the

feature

phone’s
manual.

9/93

TC4221 Digital Display

=-.

Note: (1) The display does

not

use the blue and white wires,
but simply passes them on from its line receptacle to its
phone receptacle.

(2) Alternatively, you can wire Telecenter V display
phones to a punch block. See the main wiring diagram
(KM1035) in the TCV manuals. Telecenter System 21
displays can also be wired direct to the MSM port punch
blocks. See the appropriate diagram in the Telecenter
System 21 Installation Drawings manual, KI-1767.

Adjusting the Display

The contrast adjustment for the display can be accessed

through the lower left hole in the back of the unit (as viewed
from the rear). Use a small, flat-blade screwdriver for the
adjustment.

Setting the DIP Switch

Overview

The eight-position DIP switch on the back of the display

configures the unit for different systems.

Baud Rate

("4800"’ shown)

Display Address

(Address ‘0” shown) (TCV shown)

Display Type

("Optrex" shown)

\

A

,

System Type

Troubleshooting

Use a voltmeter to check the “Display” terminals (black
and yellow wires): during normal operation, you should get
a reading of 10 to 12 VDC. Within five seconds of being
turned on, the display should show an initial message, such
as “Vervvv DD,” where “VW” represents the software

version number, and “DD” represents the DIP-switch setting.

(Note that, the first time, you may need to adjust the contrast

to see the message.)

Note: You can check the display apart from the system, by

using a separate power source (12 VDC, 5-10

TC4221 DIP-Switch Summary

Function

Display Address (0- 1

Baud-Rate Selection

Display Type

I

___.

System Type

.-

TCV and TC2100 only (see
the table below).
Set to “Off’ for other systems.

3
4

On = 9600 baud

5

Off = 4800 baud

Off = Optrex

6

On = Hitachi

7

(Always Off)
Note: Leave 6 and 7 in
factory settings.

Off = TCV, TC2100

8

On = TCIV, TC TCS, TC1100

mA).

Comments

(factory setting)

-

Figure 3. The Display DIP Switch

Important: The
only when it is powered up. It will ignore changes made while
it is running, until its power has been cycled off and back on

(e.g., by momentarily unplugging its line cord).

TC4221

checks the DIP-switch settings

9/93

Diagnostic Mode

To select the diagnostic mode, set slide switches 1-5 and 8
On (that is, all but 6 and 7, which must always remain in their
factory setting). This mode works with TCV (tone) and

TC2100, or TCIV and TC1100 (pulse) applications.

The display shows all the characters received from either

the pulse or the tone inputs as hexadecimal characters. When
the screen is full, the display will pause a few seconds before
showing the next screen of hexadecimal characters. The unit
can buffer up to 30 undisplayed characters.

Here is a typical hex message on a Telecenter V system:

01, 81, 1B, 01, [Text]

- address 1;

(81

The Telecenter V system uses a 40-kHz carrier to transmit
asynchronous, ASCII, serial data.

1B , 01 =

Set Cursor 1)

Page 3

TC4221 Digital Display

Telecenter V & Telecenter System 21

For TCV or TC2100 operation, push slide switch 8 Off and

5 on.

Display Address

Set slide switches 1-4 to give each display a different address
(the settings correspond to binary numbers, with the least­significant-digit on the left):

Slide-Switch Settings for Display Addresses

Because the Telecenter V and Telecenter System 21 use a
single display drive, all displays receive the same messages,
However, only the unit with the corresponding address will
display an individual message.

Other Systems

For Telecenter IV, Telecenter TCS, and Telecenter 1100

operation, set slide switch 8 On and switches 1 through 5 Off:

Page 4

w=

9/93

--

Typical
wall-mounted

modular

receptacle

Schematic Detail

Typical Display Conns:

B

(LCD+)

Y (LCD-)

Phone Line

To any LLM line or

T

R

System

configured as phone

interface.
main TCIV, TCV, or
TCS manual for
configuration

requirements.

21 MSM port

See the

-s-----m

(r&i$+j~~

SUYINK _

Also see the display-phone
wiring diagram for the TCIV

(KM0684), TCS (KM0837), or

TC2100 (KM1125) in

appropriate main manual.

TC4221 Digital Display

KM1040 H

Printed on recycled paper using soy ink.

the