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Copyright 1995 Allied Telesyn International Corp.
CentreCOM is a trademark of Allied Telesyn International Corp.

All rights reserved. No part of this publication may be reproduced without prior written permission from 
Allied Telesyn International Corp. 

Allied Telesyn International Corp. reserves the right to make changes in specifications and other informa-
tion contained in this document without prior written notice. The information provided herein is subject to 
change without notice. In no event shall Allied Telesyn International Corp. be liable for any incidental, spe-
cial, indirect, or consequential damages whatsoever, including but not limited to lost profits, arising out of 
or related to this manual or the information contained herein, even if Allied Telesyn International Corp. has 
been advised of, known, or should have known, the possibility of such damages.

 

Allied Telesyn International

950 Kifer Road

Sunnyvale, CA  94086  USA

Tel (800) 424-4284 • Fax (408) 736-0100

Technical Support Tel (800) 428-4835 • Fax (206) 481-3790

International Fax (415) 964-3760

 

STATEMENTS

 

U.S. Federal Communicatlon

 

Warning: 

 

This equipment has been tested and found to comply with the limits for a Class A digital device 

pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against 
harmful interference when the equipment is operated in a commercial environment. This equipment gen-
erates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with this 
installation manual, may cause harmful interference to radio communications. Operation of this equip-
ment in a residential area is likely to cause harmful interference in which case the user will be required to 
correct the interference at his own expense.

 

Note: 

 

Modifications or changes not expressly approved of by the manufacturer, can void your right to 

operate this equipment.

 

Danger: 

 

There are no “user-serviceable” parts inside the CentreCOM Multiport Fanout. Due to the dan-

ger of exposed high voltages, Do not operate or apply power to the micro repeaters when the cover is 
removed. This unit should be opened only by a trained and qualified technician.

 

Canadian Department of Communications

 

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus 
set out in the radio interference regulations of the Canadian Department of Communications.

Le présent appariel numérique n'émet pas de bruits radioélectriques dépassant les limites appicables 
aux appareils numériques de la Classe A. Prescrites dans le réglement sur le brouillage radioélectrique 
édicté par le minestére des Communications Du Canada.

 

U.L. Environmental

 

Caution: 

 

U.L. Iisted for use in other Environmental Air Spaces in Accordance with Article 300-22 (c) of 

the U.S.A. National Electrical Code.

 

Note:

 

 Product is not Plenum rated.

 

All Countries:

 

 Install in accordance with Local and National Electrical Codes.

CentreCOM™ Multiport Fanout

 Models

AT-280
AT-480

User Manual

 

PN 613-10445-00 Rev. A

960305

 

INDICATORS

 

The AT-280 and AT-480 fanouts have four LEDs. They are as follows:

 

Power —

 

 Indicates that power is present from one of the DTE AUI ports.

 

Transmit —

 

 Indicates that packets are being transmitted to the external transceiver attached to the 15 pin 

connector located on the top of the fanout.

 

Receive — 

 

Flashes when packets are received from the external transceiver attached to the 15 pin con-

nector located at the top of the fanout.

 

Collision —

 

 Indicates that collisions were detected by the external transceiver.

 

AUI Pinout

 

Pin No.

Signal Name

Pin No. 

Signal Name

1

LOGIC GND

9

COL-

2

COL+

10

TX-

3

TX+

11

LOGIC GND

4

LOGIC GND

12

RX-

5

RX+

13

POWER+ 12VDC

6

POWER RETURN

14

LOGIC GND

7

N/C

15

N/C

8

LOGIC GND

Содержание CentreCOM AT-280

Страница 1: ...e Note Modifications or changes not expressly approved of by the manufacturer can void your right to operate this equipment Danger There are no user serviceable parts inside the CentreCOM Multiport Fanout Due to the dan ger of exposed high voltages Do not operate or apply power to the micro repeaters when the cover is removed This unit should be opened only by a trained and qualified technician Ca...

Страница 2: ... stating assembly The AT 280 and AT 480 transceivers are IEEE 802 3 compliant 10BASE5 trans ceiver Media Attachment Unit MAW fanouts The AT 280 is a two port while the AT 480 is a four port transceiver fanout Except for the number of ports the two model function identically These Ethernet transceiver fanout devices are powered by a Data Terminal Equipment DTE attached to any of the male Attachment...

Страница 3: ... stating assembly The AT 280 and AT 480 transceivers are IEEE 802 3 compliant 10BASE5 trans ceiver Media Attachment Unit MAW fanouts The AT 280 is a two port while the AT 480 is a four port transceiver fanout Except for the number of ports the two model function identically These Ethernet transceiver fanout devices are powered by a Data Terminal Equipment DTE attached to any of the male Attachment...

Страница 4: ...e Note Modifications or changes not expressly approved of by the manufacturer can void your right to operate this equipment Danger There are no user serviceable parts inside the CentreCOM Multiport Fanout Due to the dan ger of exposed high voltages Do not operate or apply power to the micro repeaters when the cover is removed This unit should be opened only by a trained and qualified technician Ca...

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