Allied Telesis AT-FH708SW User manual

AT-FH708SW
AT-FH712SW
AT-FH716SW
AT-FH724SW
AT-FH716
Dual-speed Hubs
Installation Guide
PN 613-10710-00 Rev. G

Copyright 1999 Allied Telesyn International, Corp.
960 Stewart Drive Suite B, Sunnyvale CA 94086 USA
All rights reserved. No part of this publication may be reproduced without prior written permission
from AlliedTelesyn International, Corp.
Ethernet is a registered trademark of Xerox Corporation. All other product names, company names,
logos or other designations mentioned herein are trademarks or registered trademarks of their
respective owners.
AlliedTelesyn International, Corp. reserves the right to make changes in specifications and other
information contained in this document without prior written notice. The information provided
herein is subject to change without notice. In no event shall AlliedTelesyn International, Corp. be
liable for any incidental, special, 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 AlliedTelesyn International, Corp. has been advised of, known, or should have known, the
possibility of such damages.

iii
Statements
AT-FH708SW, AT-FH712SW, AT-FH716SW, AT-FH724SW
or AT-FH716 in a Stacked Configuration
FCC Warning
RADIATED ENERGY
U.S. Federal Communications
Note: 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 generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with this instruction manual, may cause harmful interference to radio
communications. Operation of this equipment 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 or
the FCC, can void your right to operate this equipment.
Use Category 3, 4, or 5 unshielded or shielded twisted-pair cable for all 10 Mbps
RJ45 connections, and Category 5 unshielded or shielded twisted-pair for all 100
Mbps RJ45 connections.
Class A (Canada Department of Communications)
Industry Canada
This Class A digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement
sur le matériel brouilleur du Canada.

iv
CE Mark Warning
This is a Class A product. In a domestic environment, this product may cause
radio interference in which case the user may be required to take adequate
measures.
This is to certify that this product complies with ISO/IEC Guide 22 and EN45014.
It confirms to the following specifications:
EMC: EN55022 (1988)/CISPR-22(1985) Class A
IEC1000-4-2(1995) 4kV CD, 8kV AD
IEC1000-4-3(1995) 3V/m
IEC1000-4-4(1995) 1kV - (power line), 0.5kV - signal
line
IEC1000-4-6(1995) 3Vrms

Statements
v
AT-FH708SW, AT-FH712SW, AT-FH716SW, AT-FH724SW,
AT-FH716 in a Standalone Operation Only
FCC Warning
U.S. Federal Communications Commission
DECLARATION OF CONFORMITY
Manufacture Name: AlliedTelesyn International, Corp.
Manufacture Address: 960 Stewart Drive, Suite B
Sunnyvale, CA 94086 USA
Manufacture Telephone: [phone]
Declares that the Product: Dual-speed hubs
Model Numbers: AT-FH708SW, AT-FH712SW, AT-FH716SW,
AT-FH724SW, AT-FH716
This product complies with FCC Part 15B, Class B Limits:
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device must not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
RADIATED ENERGY
Note: This equipment has been tested and found to comply with the limits for a Class B digital device
pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with instructions, may cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on; the user is encouraged to try to correct the interference by one or more of the
following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
- Consult the dealer or an experienced radio/TV technician for help.
Changes and modifications not expressly approved by the manufacturer or registrant of this
equipment can void your authority to operate this equipment under Federal Communications
Commission rules.
WARNING: This product requires only Category 3, 4, or 5 shielded twisted-pair cable for all 10 Mbps
RJ45 connections, and Category 5 shielded twisted-pair for all 100 Mbps RJ45 connections to
comply with Class B emission limits. If not used with shielded cables, this product may cause radio
interference in which case the user may be required to take adequate measures to reduce interference
levels.
Canadian Department of Commissions
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel
brouilleur du Canada.

AT-FH700 Series Hubs Installation Guide
vi
CE Mark Warning
This is to certify that this product complies with ISO/IEC Guide 22 and EN45014.
It confirms to the following specifications:
Warning
This product requires shielded cables to comply with Class B emission limits.
If not used with shielded cables, this product may cause radio interference in
which case the user may be required to take adequate measures.
This product complies with the requirements of the Low Voltage Directive 73/23/
EEC and the EMC Directive 89/336/EEC.
Warning
Do not plug a phone jack connector in the RJ45 port. This may damage the
device.
AT-FH708SW, AT-FH716SW and AT-FH716 in a Stacked or
Standalone Operation
Safety Compliance
UnderWriters Laboratories, Inc. (USA)
EMC: EN55022 (1988)/CISPR-22(1985) Class B
IEC1000-4-2(1995) 4kV CD, 8kV AD
IEC1000-4-3(1995) 3V/m
IEC1000-4-4(1995) 1kV - (power line), 0.5kV - signal
line
IEC1000-4-6(1995) 3Vrms

Statements
vii
AT-FH712SW and AT-FH724SW in a Stacked or
Standalone Operation
Safety Compliance CSA/NRTL
Important! Before making connections, make sure you have the correct cord set.
Wichtige Sicherheitshinweise
1. Bitte lesen Sie sich diese Hinweise sorgfältig durch.
2. Heben Sie diese Anleitung für den späteren Gebrauch auf.
3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden
Sie keine Flüssig- oder Aerosolreiniger. Am besten dient ein
angefeuchtetes Tuch zur Reinigung.
4. Um eine Beschädigung des Gerätes zu vermeiden sollten Sie nur
Zubehörteile verwenden, die vom Hersteller zugelassen sind.
5. Das Gerät ist vor Feuchtigkeit zu schützen.
6. Bei der Aufstellung des Gerätes ist auf sicheren Stand zu achten. Ein
Kippen oder Fallen könnte Verletzungen hervorrufen. Verwenden Sie
nur sichere Standorte und beachten Sie die Aufstellhinweise des
Herstellers.
7. Die Belüftungsöffnungen dienen zur Luftzirkulation die das Gerät vor
Überhitzung schützt. Sorgen Sie dafür, daß diese Öffnungen nicht
abgedeckt werden.
8. Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte.
9. Die Netzanschlußsteckdose muß aus Gründen der elektrischen
Sicherheit einen Schutzleiterkontakt haben.
10. Verlegen Sie die Netzanschlußleitung so daß niemand darüber fallen
kann. Es sollte auch nichts auf der Leitung abgestellt werden.
11. Alle Hinweise und Warnungen die sich am Gerät befinden sind zu
beachten.
12. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es
vom Stromnetz trennen. Somit wird im Falle einer Überspannung eine
Beschädigung vermieden.
13. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder
Flüssigkeiten in das Gerät gelangen. Dies könnte einen Brand bzw.
elektrischen Schlag auslösen.

AT-FH700 Series Hubs Installation Guide
viii
14. Öffnen Sie niemals das Gerät. Das Gerät darf aus Gründen der
elektrischen Sicherheit nur von authorisiertem Servicepersonal geöffnet
werden.
15. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu
trennen und von einer qualifizierten Servicestelle zu überprüfen:
a. Netzkabel oder Netzstecker sind beschädigt.
b. Flüssigkeit ist in das Gerät eingedrungen.
c. Das Gerät war Feuchtigkeit ausgesetzt.
d. Wenn das Gerät nicht der Bedienungsanleitung entsprechend
funktioniert oder Sie mit Hilfe dieser Anleitung keine Verbesserung
erzielen.
e. Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.
f. Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.
16. Bei Reparaturen dürfen nur Orginalersatzteile bzw. den Orginalteilen
entsprechende Teile verwendet werden. Der Einsatz von ungeeigneten
Ersatzteilen kann eine weitere Beschädigung hervorrufen.
17. Wenden Sie sich mit allen Fragen die Service und Reparatur betreffen an
Ihren Servicepartner. Somit stellen Sie die Betriebssicherheit des Gerätes
sicher.

ix
Table of Content
Statements .............................................................................................................. iii
AT-FH708SW, AT-FH712SW, AT-FH716SW, AT-FH724SW or
AT-FH716 in a Stacked Configuration............................................................... iii
FCC Warning................................................................................................... iii
Class A (Canada Department of Communications) .....................................iii
CE Mark Warning ........................................................................................... iii
AT-FH708SW, AT-FH712SW, AT-FH716SW, AT-FH724SW,
AT-FH716 in a Standalone Operation Only ...................................................... iv
FCC Warning................................................................................................... iv
CE Mark Warning ............................................................................................ v
AT-FH708SW, AT-FH716SW and AT-FH716 in a Stacked or
Standalone Operation........................................................................................... v
AT-FH712SW and AT-FH724SW in a Stacked or Standalone Operation .......... vi
Safety Compliance CSA/NRTL....................................................................... vi
Chapter 1
Product Description ............................................................................................... 1
Overview................................................................................................................... 1
Key Features ............................................................................................................. 3
Front Panels ............................................................................................................. 4
Front Panel LEDs ............................................................................................. 5
Front Panel Connectors ................................................................................... 6
MDI /MDI-X Switch........................................................................................ 6
Rear Panel................................................................................................................. 7
Power Supply and Fan ..................................................................................... 7
Stacking Connectors ........................................................................................ 7
Rackmount Options ................................................................................................ 7

x
Chapter 2
Installatio .............................................................................................................. 9
Verifying Package Contents..................................................................................... 9
Site Requirements .................................................................................................. 10
Standalone Desktop Installation ........................................................................... 10
Rackmounting the Hubs........................................................................................ 11
Stacking the Hubs .................................................................................................. 12
Connecting Network Devices................................................................................ 13
Connecting Ethernet or Fast Ethernet Workstations ................................... 13
Using An External Switch (AT-FH716) ........................................................ 14
Using the Integrated Switch Module............................................................. 15
Connecting Devices to the MDI/MDI-X Ports.............................................16
Cable Length and Cascading Considerations ............................................... 16
Chapter 3
Troubleshooting ................................................................................................... 17
Contacting Allied Telesyn’s Technical Support ................................................... 17
Verifying System Information............................................................................... 17
Diagnosing Hub Indicators ................................................................................... 18
Power and Cooling Problems................................................................................ 18
Appendix A
Product Specifications for the AT-FH700 Series Hubs ...................................... 19
Appendix B
Technical Support Fax Order .............................................................................. 21
Incident Summary ................................................................................................. 21
Appendix C
AT-FH700 Series Hubs Installation Guide Feedbac ........................................ 23
Appendix D
Where To Find Us ................................................................................................ 25

1
Chapter 1
Product Description
Overview
This chapter describes the features of the AT-FH700 Series of stackable dual-speed
Fast Ethernet hubs:
!AT-FH708SW
!AT-FH712SW
!AT-FH716SW
!AT-FH724SW
!AT-FH716
The AT-FH700 Series hubs were designed to provide a compact, flexible solution
for corporate workgroups or small and medium businesses. These hubs provide 8,
12, 16 and 24 dual-speed ports (10/100 Mbps). The hubs contain two internal
repeater buses: one for 10 Mbps traffic and another for 100 Mbps traffic.
The AT-FH708SW, AT-FH712SW, AT-FH716SW and AT-FH724SW hubs
include an integrated two-port switch module that connects the 10 Mbps and 100
Mbps repeater buses. The switch module allows communications between devices
operating at different speeds.
On the AT-FH716 model, traffic between connected devices of the same speed are
confined within the appropriate repeater bus. Each of these ports automatically
senses the speed of the attached device, and channels the data to the appropriate
10 Mbps or 100 Mbps segment.

Product Description
2
Table 1 summarizes the features of each hub model:
Note
For definitions of technical terms associated with Allied Telesyn’s
products, refer to the Glossary on Allied Telesyn’s website at
www.alliedtelesyn.com.
Table 1 AT-FH700 Series Hub Models and Descripti o n
Model Description
AT-FH708SW Eight 10/100 Mbps twisted-pair ports
One MDI/MDI-X switch associated with Port 8
Integrated switch module
LED indicators for Power,Collision, Activity, Partition, and Link 10/100
AT-FH712SW Twelve 10/100 Mbps twisted-pair ports
One MDI/MDI-X switch associated with Port 12
Integrated switch module
LED indicators for Power,Collision, Activity, Partition, and Link 10/100
AT-FH716SW Sixteen 10/100 Mbps twisted-pair ports
One MDI/MDI-X switch associated with Port 16
Integrated switch module
LED indicators for Power,Collision, Activity, Partition, and Link 10/100
AT-FH724SW Twenty-four 10/100 Mbps twisted-pair ports
One MDI/MDI-X switch associated with Port 24
Integrated switch module
LED indicators for Power,Collision, Activity, Partition, and Link 10/100
AT-FH716 Sixteen 10/100 Mbps twisted-pair (ports
One MDI/MDI-X switch associated with Port 16
LED indicators for Power,Collision, Activity, Partition, and Link 10/100

AT-FH700 Series Hubs Installation Guide
3
Key Features
The AT-FH700 Series hubs provide the following key features:
!IEEE 802.3 (10Base-T) and IEEE 802.3u (100Base-TX) compliant
!Class II repeater
!8, 12, 16 and 24 10/100 Mbps dual-speed Fast Ethernet ports (RJ45
connectors)
!Category 5 UTP/STP cables for 10 Mbps and 100 Mbps transmissions;
Category 3 UTP cables for 10 Mbps transmission only
!Auto-negotiate for 10/100 Mbps transmission speed
!Stacked configuration of up to six hubs with the use of a cascade cable, or
standalone configuration
!Integrated switch module in the AT-FH708SW, AT-FH712SW,
AT-FH716SW and AT-FH724SW models to allow transmissions
between 10 Mbps and 100 Mbps devices connected to the hub stack
!Desktop or rack mounting options

Product Description
4
Front Panels
Figure 1 through Figure 3 show the hub front panels.
Figure 1 AT-FH708SW and AT-FH712SW Front Panels
Figure 2 AT-FH716SW Front Panel
Figure 3 AT-FH716 Front Panel
Figure 4 AT-FH724SW Front Panel
To Hu b
To PC
10BASE-T/100BASE-TX 16 PORT ETHERNET HUB
POWER
COLLISION
ACTIVITY
PARTITION
LINK
PARTITION
LINK
1234
56789101112
YELLOW 10Mbps GREEN 100Mbps
10M 100M
1 X 2 X 3 X 4 X
9 X 10 X 11 X 12
5 X 6 X 7 X 8 X
MDI/MDI-X Switch (associated with the last port)
To Hub
To PC
10BASE-T/100BASE-TX 8 PORT DUAL SPEED HUB
POWER
COLLISION
ACTIVITY
PARTITION
LINK 12345678
YELLOW 10Mbps GREEN 100Mbps
10M 100M
1X2X3X4X 5X6X7X 8
To Hub
To PC
10BASE-T/100BASE-TX 16 PORT DUAL SPEED HUB
POWER
COLLISION
ACTIVITY
PARTITION
LINK
PARTITION
LINK
12345678
9 10111213141516
YELLOW 10Mbps GREEN 100Mbps
10M 100M
1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X
9 X 10 X 11 X 12 X 13 X 14 X 15 X 16
Power
Port LEDs
Segment LEDs
To Hub
To PC
10BASE-T/100BASE-TX 16 PORT ETHERNET HUB
POWER
COLLISION
ACTIVITY
PARTITION
LINK
PARTITION
LINK
12345678
9 10111213141516
YELLOW 10Mbps GREEN 100Mbps
10M 100M
1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X
9 X 10 X 11 X 12 X 13 X 14 X 15 X 16
To Hub
To PC
10BASE-T/100BASE-TX 24PORT DUAL SPEED HUB
1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X
13 X 14X 15X 16X 17 X 18 X 19 X 20X
9 X 10 X 11 X 12 X
21X 22X 23X 24
COL
ACT 10M
COL
ACT 100M 1 2 3 4 5 6 7 8 9 10 11 12
PWR 13 14 15 16 17 18 19 20 21 22 23 24
Yellow 10Mbps GREEN 100Mbps
LINK
PARTITION
LINK
PARTITION

AT-FH700 Series Hubs Installation Guide
5
Front Panel LEDs
The AT-FH700 Series hubs’ front panel LEDs provide status in three areas:
!System-wide status
!Segment status
!Per-port status
Figure 5 A Close Up of the Port LEDs for the 8-Port Model
Figure 6 A Close Up of the Port LEDs for AT-FH724SW
PARTITION
LINK 12345678
YELLOW 10Mbps GREEN 100Mbps
COL
ACT 10M
COL
ACT100M 1 2 3 4 5 6 7 8 9 101112
13 14 15 16 17 18 19 20 21 22 23 24
Yellow 10Mbps GREEN 100Mbps
LINK
PARTITION
LINK
PARTITION

Product Description
6
For detailed explanations on the hubs’ front panel LEDs, see Tabl e2.
Front Panel Connectors
All network ports on the AT-FH700 Series hubs use shielded RJ45 connectors. For
10 Mbps connections, use Category 3 or above. For 100 Mbps connections, use
Category 5 or above cables only.
MDI /MDI-X Switch
Each hub has a MDI/MDI-X switch associated with either Port 8, Port 12, Port 16
or Port 24. The switch changes the associated port between MDI and MDI-X. The
two settings provide you the flexibility of connecting any type of device with a
straight-through cable:
!To Hub (in), for cascading to a switch or another hub
!To PC (out), for connection to a DTE (an end station or server)
Refer to Chapter 2 for additional information on cable lengths when cascading
hubs.
Table 2 LED Indicators
LED Description
System Status Indicator:
Power Steady green indicates the hub is receiving power.
Segment Status Indicators (one each for the 10 Mbps and 100 Mbps segments):
Collision Flashing amber indicates a collision has occurred in the 10
Mbps or 100 Mbps domain.
Activity Flashing green indicates 10 Mbps or 100 Mbps traffic is
traversing the respective segment.
Port Status Indicators:
Partition Steady amber or red indicates the port has been partitioned.
Link 10/100M Off means there is no link on the port.
Steady green indicates the port has established a 100 Mbps
link.
Steady amber indicates the port has established a 10 Mbps link.

AT-FH700 Series Hubs Installation Guide
7
Rear Panel
The rear panel shown in Figure 7 is common to all models.
Figure 7 AT-FH700 Series Rear Panel
Power Supply and Fan
Power connection to the AT-FH700 Series hubs are done through the power
receptacle in the rear panel. The hubs use a universal internal switching power
supply with 100 to 120 VAC, or 200 to 240 VAC (autoranging), 50/60 Hz input
rating. The maximum power consumption is 27W. Cooling fans help maintain the
hub’s optimal temperature.
Stacking Connectors
Each AT-FH700 Series hub has two stacking connectors in the rear panel, In and
Out, for inter-repeater connectivity. You can connect up to six hubs in a stack.
Allied Telesyn supplies one stacking cable with each hub.
The hubs are fully stackable based on the following parameters:
!Units can be used as standalone units, or up to six units can be stacked
using stacking cables-either SW, non-SW or both in combination.
!At least one SW unit is required to enable full communication for all
ports.
!Where multiple SW units are stacked, any redundant switch circuits are
automatically disabled.
More details on using the stacking connectors are described later in Chapter 2.
Rackmount Options
Rackmount kits are provided if you want to install your hubs in a standard 19-inch
rack. Procedures for rackmounting are provided in Chapter 2.
100-240VAC 50-60Hz, 0.5A
OUT IN

9
Chapter 2
Installation
Verifying Package Contents
Make sure that the package includes the following items:
!One AT-FH700 Series hub
!One AC power cord
!Two rackmount brackets and eight screws
!Four self-adhesive rubber feet
!One stacking cable
!Warranty card
!This installation guide
If any of the above items is damaged or missing, contact your representative
immediately.

Installation
10
Site Requirements
Make sure you observe the following site requirements:
!Choose a location that is less than 100 m (328 ft) away from servers,
workstations, or switches.
Caution
Category 5 UTP/STP cables are environment-sensitive. Make sure the
cable route is not too close to electrical noise sources such as power lines
or fluorescent lights.
!Place the hub in a dust-free and moisture-free environment.
!Do not block ventilation openings on the unit.
!Do not place heavy objects on top of the hub.
!Use dedicated power circuits or power conditioners to supply power to
the hub.
Standalone Desktop Installation
1. Attach the four self-adhesive rubber feet to the bottom of the hub,
positioning them in the indentations.
2. Place the hub on a flat, level surface where power is easily accessible.
3. Attach one end of the power cord to the back of the hub and the other end
to the power source.
Make sure the Power LED on the front panel lights green.
4. Attach the data cables and observe normal operation as indicated by the
port LEDs.
You are done with standalone desktop installation.