Black Box TCA-232 Bedienungsanleitung

JULY 1997

MC124A

Tail-Circuit Adapter (TCA-232)

CUSTOMER SUPPORT INFORMATION

Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX

FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com • E-mail: [email protected]

TCA-232

TRADEMARKS

All applied-for and registered trademarks are the

property of their respective owners.

TCA-232

CONTENTS

1. Specifications . . . . . . . . . . . . . . . . . . . . . . . .5

2. Introduction . . . . . . . . . . . . . . . . . . . . . . . .6

2.1 Description . . . . . . . . . . . . . . . . . . . . .6

2.2 Features . . . . . . . . . . . . . . . . . . . . . . . .6

3. Installation . . . . . . . . . . . . . . . . . . . . . . . . . .7

4. Application . . . . . . . . . . . . . . . . . . . . . . . . .8

TCA-232

1. Specifications

Transmission Format — Synchronous, transparent

to protocol

Data Rate — Up to 256 Kbps

Tail-to-System Buffering — 16-bit buffer, automatic

centering

Connectors — (2) DB25 female

DCE to DTE Connection — The TCA-232 provides

cross-pinning function

Temperature — 32 to 140°F (0 to 60°C)

Humidity — Up to 95%, noncondensing

Power — No AC power required; uses ultra-low

power derived from the EIA RS-232C, CCITT V.24

data and clock signals

Size — 1.2"H x 2"W x 5.3"D (3 x 5 x 13.5 cm)

Weight — 0.22 lb. (0.1 kg)

TCA-232

2. Introduction

2.1 Description

The Tail-Circuit Adapter (TCA-232) has a 16-bit

buffer that helps you synchronize clock signals in

your tail circuit.

Data is transferred from the multiplexor directly

to the adjacent modem, using the mux receive clock

(pin 17), which is also provided to the modem

external clock (pin 24). Data received from the

remote terminal is loaded into the buffer using

the mux transmit clock (pin 15).

Since the TCA-232 performs all necessary cross

connections between the two DCEs, you only need

straight-through cables.

2.2 Features

• DCE to DCE connection

• Built-in buffer to prevent jitter errors

• Data rates up to 256 Kbps

• No strapping, easy to install

• No AC power required

• Compact and lightweight

TCA-232

3. Installation

1. Connect the side of the TCA-232 labeled

“SYSTEM, J1” to the multiplexor sub-channel

or the main modem.

2. Connect the side of the TCA-232 labeled

“TAIL, J2” to the local modem. The local

modem should be strapped to external clock.

NOTE

The remote modem on the tail circuit should be strapped for

CLOCK LOOPBACK.

TCA-232

4. Application

The TCA-232 is used to couple two DCE devices

together whose clocks are of the same frequency

but are not “in phase.”

An example is an extension of a multiplexor

channel using modems in a “tail circuit” (see

Figure 4-1). When the distance between the two

tail modems is significant, there is a difference in

phase between the multiplexor’s transmit clock

and the adjacent modem’s receive clock, resulting

in transmission errors. The TCA-232 acts as a buffer

between the DCEs to prevent these transmission

errors.

TCA-232

Figure 4-1. Typical Application.

Mux

TCA Terminal

Modem

(External

Clock)

Modem

(Clock

Loopback)

TCA-232

Figure 4-2. Schematic Diagram of Data Flow.

BUFFER

TCA

SYSTEM

TAIL

15 TC 15

2TD 2

4RTS 4

17 RC 17

3RD 3

8DCD 8

6DSR 6

20 DTR 20

5CTS 5

1PG 1

7SG 7

17 RC

3RD

8 DCD

15 TC

2TD

4 RTS

20 DTR

6 DSR

1PG

7SG

24 ECLK 24

5 CTS 5

EXTERNAL

CLOCK

DCD

MUX

DCE

MODEM

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746

Inhaltsverzeichnis

Andere Black Box Adapter Handbücher

Black Box

Black Box IC025A Bedienungsanleitung

Black Box

Black Box CL512A-F Bedienungsanleitung

Black Box

Black Box LG9230CtX-32 Bedienungsanleitung

Black Box

Black Box ME890AE-R2 Bedienungsanleitung

Black Box

Black Box USB Director II Bedienungsanleitung

Black Box

Black Box AC700A Bedienungsanleitung

Black Box

Black Box LE073A-R2 Bedienungsanleitung

Black Box

Black Box IC198A Bedienungsanleitung

Black Box

Black Box 2-Port RS-232/422/485 Bedienungsanleitung

Black Box

Black Box IC513C Bedienungsanleitung

Black Box

Black Box DVI2VGA Bedienungsanleitung

Black Box

Black Box IC250C Bedienungsanleitung

Black Box

Black Box IC461A Bedienungsanleitung

Black Box

Black Box MicroConverter G.703 Bedienungsanleitung

Black Box

Black Box LW6007A Bedienungsanleitung

Black Box

Black Box LBU9001-US Bedienungsanleitung

Black Box

Black Box IC144A Bedienungsanleitung

Black Box

Black Box IC102C-R2 Bedienungsanleitung

Black Box

Black Box IC126C Bedienungsanleitung

Black Box

Black Box LE073A-R2 Bedienungsanleitung

Black Box

Black Box Twinax Baluns Bedienungsanleitung

Black Box

Black Box LG9230CtX-32 Bedienungsanleitung

Black Box

Black Box IC1000A Bedienungsanleitung

Black Box

Black Box IC189C Bedienungsanleitung

Beliebte Adapter Handbücher anderer Marken

PCB Piezotronics

PCB Piezotronics 090B274 Bedienungsanleitung

Auvidea

Auvidea J20 Produkthandbuch

Gossen MetraWatt

Gossen MetraWatt AT3-III E Bedienungsanleitung

Akribis

Akribis ITF-21-BISS-MIT Bedienungsanleitung

Tenda

Tenda W54U Bedienungsanleitung

ROHO

ROHO AGILITY Bedienungsanleitung

PROLiNK

PROLiNK WN2001 Bedienungsanleitung

Hawking

Hawking HUF2 Bedienungsanleitung

Airlink101

Airlink101 AWLC4030 Bedienungsanleitung

NETGEAR

NETGEAR XAV101v1 - Powerline AV Ethernet Adapter Bedienungsanleitung

Philips

Philips SWA4554S/10 Bedienungsanleitung

JVC

JVC TS-C9D2B Gebrauchsanweisung

NETGEAR

NETGEAR A6100 Bedienungsanleitung

D-Link

D-Link DWA-121 Bedienungsanleitung

Philips

Philips SWA2037 Bedienungsanleitung

Basalte

Basalte 0610-20 Bedienungsanleitung

Yealink

Yealink EHS40 Bedienungsanleitung

Balluff

Balluff BIC 1B0-IT1A7-Q40KFU-SM4A4A Bedienungsanleitung