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
