TC Communications TC8000 Manuel utilisateur

Notice!

Although every effort has been made to insure that this manual is

current and accurate as of date of publication, no guarantee is given or

implied that this document is error free or accurate with regard to any

specification. TC Communications, Inc. reserves the right to change or

modify the contents of this manual at any time without prior notifica-

tion.

TC8000

4 to 28 CHANNEL AUDIO/INTERCOM

AND DATA

FIBER OPTIC MULTIPLEXER

User's Manual

MODEL:

S/N:

DATE:

TC Communications, Inc. 17881 Cartwright Road - Irvine, CA 92614

Tel: (949) 852-1972 Fax: (949) 852-1948 Web Site: www.tccomm.com Email: info@tccomm.com

MNL-80000-01-70

TC8000 4 to 8CH Audio/Intercom

User's Manual

Rev. 7.0

MNL-80000-01-70

- 2 -

Cha ter 1 - Overview ............................................................................................................ 3

Features ........................................................................................................................................... 3

Descri tion ...................................................................................................................................... 3

TC8000 Functional Block Diagram ............................................................................................ 4

Fiber O tics ..................................................................................................................................... 5

Connectors ................................................................................................................................ 5

Launch Power, Sensitivity and Loss Budget ............................................................................ 5

Transmission Distances (ty ical) .............................................................................................. 5

Fiber O tic Redundancy (o tional) ........................................................................................... 5

Front and Rear Panel Views ...................................................................................................... 6

Base Card's LEDs and Di Switches ......................................................................................... 7

Ex ansion Card's LEDs and Di Switches ................................................................................ 8

Electrical Signal Interface Connection & Virtual Pin Assignment .................................................. 9

Four Wire & Two Wire Analog Pin Assignments ...................................................................... 9

Intercom Pin Assignments ........................................................................................................ 9

RS-232 Async with Control and Sync ..................................................................................... 10

RS-422/RS-485 Asynchronous (O tional) ............................................................................... 10

RS-485 Two Wire (Half Du lex) Asynchronous ...................................................................... 11

TTL Asynchronous .................................................................................................................. 12

Dry Contact Closure Detector & Relay Switch (O tional) ....................................................... 12

RJ-11 to DB25 Female (Async & Sync) Connection Cables .................................................... 13

Cha ter 2 - Installation ......................................................................................................... 15

Un acking the Unit ........................................................................................................................ 15

Equi ment Location ....................................................................................................................... 15

System Configuration (see DIP switch settings on ages 7 and 8) .............................................. 15

Power Su lies ............................................................................................................................. 15

Fiber O tic Cable Ty es ............................................................................................................... 15

Calculating the Loss on the Fiber ................................................................................................. 15

System Start U ............................................................................................................................. 16

Cha ter 3 - Troubleshooting .............................................................................................. 17

General .......................................................................................................................................... 17

O tic Loo back Test...................................................................................................................... 17

Cha ter 4 - S ecifications .................................................................................................. 18

Audio Bandwidth ........................................................................................................................... 18

Channel Ca acity .......................................................................................................................... 18

O tical ........................................................................................................................................... 18

Electrical ........................................................................................................................................ 18

System ........................................................................................................................................... 18

Power ............................................................................................................................................. 18

Tem erature ................................................................................................................................... 18

Physical ......................................................................................................................................... 18

Cha ter 5 - 19" Rack & Power Card ................................................................................... 20

Features ......................................................................................................................................... 20

Descri tion .................................................................................................................................... 20

Cha ter 6 - A endix .......................................................................................................... 21

Return Policy ................................................................................................................................. 21

Warranty ......................................................................................................................................... 21

Limitation of Liability ..................................................................................................................... 21

Table Of Contents

TC8000 4 to 8CH Audio/Intercom

User's Manual

Rev. 7.0

MNL-80000-01-70

- 3 -

Cha ter 1 - Overview

Features

Muxes 4 to 28 Channels of Analog or Intercom Signals

Covers Voice Band Width from 300Hz to 3.4Khz

PCM Digitized Voice Technology-Extremely Low Noise

Data Card can su ort 8 or 16 Channels of Data such as RS-232, RS-422, RS-485,

TTL or Dry Contact Closure Detector

Single Mode or Multimode

Built-In Power Redundancy

O tional O tical Redundancy

Field Interchangeable Interface Modules

LEDs for "Alarm", "Power A", "Power B", "Vcc", Channel Indicators

Rack Mount or Standalone

Descri tion

The TC8000 consists of AUDIO INTERFACE MODULES, a DIGITAL PROCESSING UNIT

and OPTICAL Tx & Rx. Utilizing the latest technology and components available on the market,

the audio interface modules contain CODEC chips to digitize analog audio signals and converts to

PCM (pulse code modulation). The PCM signals are digital codes sampled by DIGITAL PRO-

CESS UNIT and converted to series of logical "0" and "1". Then the series of code is transmitted

through the optic transmitter. The receiving process is the same but reversed.

Three kinds of interfaces can be specified: analog, intercom and data.

The analog interface is for FSK (frequency shift key) applications. The analog interface has 600

ohm isolation audio transformer. The analog voltage can be 0 to 3 Vpp.

The intercom interface is for 4 or 2 wire voice communication. It connects to a handset with

mouth and ear piece.

Since the analog and voice signals are digitized, the voice quality will not degrade as the distance is

extended. For example, distances to 30 km are typical for a pair of TC8000's with 1300nm single

mode fiber front end.

The TC8000 has four RJ-11 ports on the rear side to hook to either handsets or customer's audio

devices.

The TC8000 Data Card offers several different interchangeable interfaces, such as RS-232, RS-

422, RS-485, TTL and Dry Contact Relay. It can be upgraded or reconfigured to virtually any

configuration; simply contact the factory should the need arise.

Built-in power redundancy is standard. Optical redundancy is available as an option. Fiber

Optical connectors are ST (FC is optional); electrical connectors are RJ11. Power is 12VDC

(24VDC or -48VDC, are optional).

The TC8000 is based on modern FPGA (field programmable gate array) technology. As a result,

it benefits users by enabling optimum flexibility, low current consumption, high reliability and

maximum MTBFs.

TC8000 4 to 8CH Audio/Intercom

User's Manual

Rev. 7.0

MNL-80000-01-70

- 4 -

TC8000 Functional Block Diagram

Figure 1. Functional Block Diagram

to optic cable

Typical optical launch power:

-19dBm (850/1300nm MM)

-14dBm (1300nm SM)

Typical optical receiving sensitivity:

-34dBm (850/1300nm MM)

-36 dBm (1300nm SM)

Convert serial data to parallel

Convert parallel data to serial

LEDs

Alarm

LEDs

PWR A

PWR B

Signal

Vcc

TC8000 4 to 8CH Audio/Intercom

User's Manual

Rev. 7.0

MNL-80000-01-70

- 5 -

Fiber O tics

Connectors

Fiber optic connectors can be ST*, or FC. (*ST is a Trademark of AT&T). The optic connectors

are located on the front panel: one for transmit and one for receive.

Launch Power, Sensitivity & Loss Budget

Transmitter: Ty ical Launch Power: -19dBm* (850/1310nm MM, @62.5/125µm)

-14dBm* (1310nm SM, @9/125µm)

Receiver: Ty ical Sensitivity: -34dBm* (850/1310nm MM, @62.5/125µm)

-36dBm* (1310 SM, @9/125µm)

Loss Budget:850nm Multimode, @62.5/125µm: 15dB

1310nm Multimode, @62.5/125µm: 15dB

1310nm Single Mode, @9/125µm: 22dB

*Launch ower, sensitivity and distance are listed for reference only. These numbers may vary.

Transmission Distances (ty ical)

The TC8000 will work with all popular sizes and types of fiber. Transmission distances up to 4km*

are typical over multimode fiber at 850nm and 6km* at 1300nm. Distances to 35km* are typical

over sing le mode fiber at 1300nm. Transmission distances may vary due to the characteristics of

a given fiber optic cable.

Fiber O tic Redundancy (o tional)

With this option, the unit is equipped with two fiber optic pairs, Tx & Rx. In this case they are

designated as TxA, RxA and TxB, RxB. Both TxA and TxB are transmitting optical signal at the

same time, it depends on Receiving unit to decide either RxA or RxB is used.

Figure 2. Fiber O tic Redundancy Diagram (O tional)

TC8000 4 to 8CH Audio/Intercom

User's Manual

Rev. 7.0

MNL-80000-01-70

- 6 -

Figure 3. TC8000 Front Panel View

Figure 4. TC8000 Rear Panel View

Base

Card

AUDIO MUX

AUD IO MUX

Ex ansion

Card

Base

Card

Expansion

Card

Optional

Expansion

Board

Ex ansion Card

Base card

Channels 1-4

Analog/Intercom

Channe ls 1-4

Analog/Intercom

Power A

Connector

Power B

Connector

Dry Contact

Relay Connector

Dr y Contact

Rela y Connector

TC8000 4 to 8CH Audio/Intercom

User's Manual

Rev. 7.0

MNL-80000-01-70

- 7 -

Base Card LEDs, DIP Switches

Figure 5. TC8000 Base Card's Front Panel

AUDIO M UX

TC8000 4 to 8CH Audio/Intercom

User's Manual

Rev. 7.0

MNL-80000-01-70

- 8 -

Ex ansion Card LEDs, DIP Switches

Figure 6. TC8000 Analog Ex ansion's Card Front Panel

AUDIO MUX

TC8000 4 to 8CH Audio/Intercom

User's Manual

Rev. 7.0

MNL-80000-01-70

- 9 -

Electrical Signal Interface Connection & Pin Assignments

The RJ-11 connectors are located at the rear panel of the TC8000.

Analog & Intercom Pin Assignments

RJ-11 x 8 gang connector at the rear panel.

For analog audio signals:

pin 5 is transmit TIP & pin 2 is transmit RING.

pin 4 is receive TIP & pin 3 is receive RING.

For intercom audio signals:

pin 5 is MIC+ & pin 2 is MIC-. (signal from handset's mouth piece)

pin 4 is SPKR- & pin 3 is SPKR+. (signal goes to handset's ear piece)

Figure 7. Four Wire Analog Pin Assignments & Connection Diagram

Figure 9. Intercom Pin Assignments & Connection Diagram

Figure 8. Two Wire Analog Pin Assignments & Connection Diagram

TC8000 4 to 8CH Audio/Intercom

User's Manual

Rev. 7.0

MNL-80000-01-70

- 10 -

Figure 11. RS-422/RS-485 Async Pin Assignments & Virtual Connection Diagrams

Figure 10. RS-232 Async & Sync Pin Assignments & Virtual Connection Diagram

RS-422/RS-485 Asynchronous (O tional)

For RS-422 & RS-485 interfaces, pins 2 and 5 are balanced input pins. Pin 2 is the positive input

(TxD+) while pin 5 is negative (TxD-).

Pins 3 and 4 are balanced output pins. Pin 3 is the positive output (RxD+) while pin 4 is negative

(RxD-). Either pin 6 or pin 1 can be Signal Ground.

Only RS-422/RS-485 Async communications can be used with the TC8000 due to the limited

number of pins on the RJ-11 connector.

RS-232 (Async with Control & Sync)

For RS-232 interfaces, pin 5 is the input (TxD) pin while pin 4 is the output (RxD) pin. A separate

channel on each RJ-11 port is available on pin 3 and pin 2 (for Async with Control or Sync

interfaces). The second channel can be used as control (or handshake) signals or Tx Clock and

Rx Clock signals for RS-232 synchronous applications.

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