trademark of Netscape Communications Corporation. All other product names, company names, logos or other designations
mentioned herein are trademarks or registered trademarks of their respective owners.
Allied Telesyn, Inc. 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 Allied Telesyn,
Inc. 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 Allied Telesyn, Inc. has been advised of,
known, or should have known, the possibility of such damages.
Electrical Safety and Emissions Standards
This product meets the following standards.
U.S. Federal Communications Commission
Radiated Energy
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.
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.
RFI EmissionsFCC Class A, EN55022 Class A, EN61000-3-2, EN61000-3-3, VCCI
Class A, C-TICK, CE
ImmunityEN55024
Electrical SafetyEN60950 (TUV), UL 60950 (
Laser SafetyEN60825
CULUS
)
3
Laser Warnings
Caution
- Using controls, making adjustments to performance, or performing procedures other than
those specified herein may result in hazardous radiation exposure.
- The protection provided by the equipment may be impaired if the equipment is used in a
manner not specified by Allied Telesyn.
- Do not remove the cover from the unit or change any of the internal cables or wiring. Only
an authorized Allied Telesyn service technician should make repairs to this device.
- The TX and RX multiplexing ports contain embedded Class IIIb lasers operating in Class I
compliance. Do not make any modifications to the unit that would override the safeguards
that maintain the Class I compliance.
- The laser light used by the multiplexing ports and SFP modules is invisible. Standard
safety precautions (e.g. avoid looking directly into a fiber optic port) should always be
observed when installing or maintaining this product.
Pluggable Transceivers
For continued compliance with the above laser safety standards, use only UL recognized or other
safety agency certified Class 1 small form-factor pluggable (SFP) transceivers. The following SFP
transceiver models are available from and supported by Allied Telesyn:
Refer to the Allied Telesyn web site, www.alliedtelesyn.com, or an authorized Allied Telesyn sales
representative for a current list of supported SFP modules for this unit.
4
Product Labels
This label, located on the front panel of the unit, indicates the device is a Class 1 laser device.
CLASS 1
LASER PRODUCT
This label is located on the bottom panel of an AT-LX3800U Multi-Service Transport System.
5
Translated Safety Statements
Important: Appendix C contains translated safety statements for installing this equipment. When
you see the , go to Appendix B for the translated safety statement in your language.
Wichtig: Anhang C enthält übersetzte Sicherheitshinweise für die Installation dieses Geräts. Wenn
Sie sehen, schlagen Sie in Anhang B den übersetzten Sicherheitshinweis in Ihrer Sprache nach.
Importante: El Apéndice C contiene mensajes de seguridad traducidos para la instalación de este
equipo. Cuando vea el símbolo , vaya al Apéndice B para ver el mensaje de seguridad traducido
a su idioma.
Important : L'annexe C contient les instructions de sécurité relatives à l'installation de cet
équipement. Lorsque vous voyez le symbole , reportez-vous à l'annexe B pour consulter la
traduction de ces instructions dans votre langue.
Importante: l’Appendice C contiene avvisi di sicurezza tradotti per l’installazione di questa
apparecchiatura. Il simbolo , indica di consultare l’Appendice B per l’avviso di sicurezza nella
propria lingua.
Важно: Приложение C содержит переведенную инструкцию побезопасностиприустановке
данного устройства. Если Вы встретите , перейдите к Приложению B для получения
переведенной инструкции по безопасности.
Safety Symbols Used in this Document................................................................................................................................ 14
Where to Find Web-based Guides ....................................................................................................................................... 15
Online Support ..............................................................................................................................................................16
Email and Telephone Support....................................................................................................................................... 16
Sales or Corporate Information .....................................................................................................................................16
System Description...............................................................................................................................................................18
Line Card Descriptions .........................................................................................................................................................20
Line Card LEDs ............................................................................................................................................................. 23
System LEDs.................................................................................................................................................................27
10/100Base-TX Ethernet Port .......................................................................................................................................29
AT-LXPWR Power Supply Module .......................................................................................................................................30
AT-LXPWR/AC Power Supply.......................................................................................................................................30
AT-LXPWR/DC Power Supply.......................................................................................................
Power Connectors ................................................................................................................................................................32
AC Power Connector.....................................................................................................................................................32
DC Power Connector .................................................................................................................................................... 32
Selecting a Site for the Chassis............................................................................................................................................42
TX and RX Fiber Optic Cable Specifications........................................................................................................................ 43
Unpacking the Chassis.........................................................................................................................................................44
Installing the Power Cord Retaining Clip (AC Power Supply Only) ......................................................................................45
Installing the AT-LX3800U Chassis in a Rack ......................................................................................................................47
Installing an AT-LX3811/x Line Card .................................................................................................................................... 50
Installing an SFP Transceiver in a Line Card .......................................................................................................................53
Installing an AT-LX3801 Blank Slot Cover............................................................................................................................ 55
Cabling the Chassis..............................................................................................................................................................57
Connecting the Fiber Optic Cables to a Line Card ........................................................................................................57
Connecting the Fiber Optic Cables to the TX and RX Ports..........................................................................................58
Powering On an AC Powered System..................................................................................................................................60
Wiring and Powering On a DC Powered System ................................................................................................................. 63
Starting a Local Management Session .................................................................................................................................66
Starting a Remote Management Session.............................................................................................................................68
PA or PB LED for the System is Off or Flashing...................................................................................................................71
RDY LED on a Line Card is Off ..................................................................................................
RDY LED on a Line Card is Flashing ................................................................................................................................... 72
..........................................72
7
Contents
Line Card Tributary Side (SFP) RX and TX LEDs are Off ....................................................................................................72
Line Card Line Side RX and TX LEDs are Flashing Green or Off ........................................................................................73
Power Specifications.............................................................................................................................................................75
Safety and Electromagnetic Emissions Certifications...........................................................................................................77
DIN-8 RS-232 Terminal Port Pinouts....................................................................................................................................77
10/100Base-TX Port Pinouts ................................................................................................................................................78
Using a Cartridge-Type Cleaner ...........................................................................................................................................80
Using a Swab........................................................................................................................................................................82
Figure 1. AT-LX3800U System Front Panel........................................................................................................................ 19
Figure 2. Back Panel of an AT-LX3800U System Ordered with an AC Power Supply Installed .........................................19
Figure 3. Back Panel of an AT-LX3800U System Ordered with a DC Power Supply Installed ........................................... 19
Figure 4. AT-LX3811/x Line Card........................................................................................................................................20
Figure 6. Line Card LEDs ....................................................................................................................................................23
Figure 7. System LEDs........................................................................................................................................................27
Figure 8. AT-LXPWR/AC Power Supply..............................................................................................................................30
Figure 9. AT-LXPWR/DC Power Supply..............................................................................................................................31
Figure 10. AC Power Connector and On/Off Switch............................................................................................................ 32
Figure 11. DC Terminal Block.............................................................................................................................................. 32
Figure 12. Standard Point-to-Point Configuration................................................................................................................ 33
Figure 13. Regeneration Configuration Using the Internal Loopback Feature ....................................................................34
Figure 15. Power Cord Retaining Clip .................................................................................................................................45
Figure 16. Power Cord Retaining Bracket ...........................................................................................................................45
Figure 17. Inserting the Retaining Clip into the Retaining Bracket ......................................................................................45
Figure 18. Retaining Clip Properly Installed in the Bracket .................................................................................................46
Figure 19. Removing Plastic Feet from the Chassis............................................................................................................47
Figure 21. Mounting the AT-LX3800U Chassis in a 19-inch Rack ...................................................................................... 48
Figure 22. Removing the Dust Covers.................................................................................................................................50
Figure 23. Location of Alignment Guides.............................................................................................................................51
Figure 24. Inserting the Line Card.......................................................................................................................................51
Figure 25. Tightening the Captive Screws...........................................................................................................................52
Figure 26. Removing the Dust Plug from the SFP Port.......................................................................................................53
Figure 27. Installing an SFP Transceiver in a Line Card .......................................................................
Figure 28. Location of Alignment Guides.............................................................................................................................55
Figure 29. Installing the Blank Slot Cover............................................................................................................................56
Figure 30. Tightening the Captive Screws...........................................................................................................................56
Figure 31. Removing the Dust Plug from the SFP...............................................................................................................57
Figure 32. Connecting a Fiber Optic Cable to the SFP .......................................................................................................58
Figure 33. Removing the Dust Plugs from the TX and RX Ports.........................................................................................58
Figure 34. Connecting the TX and RX Cables..................................................................................................................... 59
Figure 35. On/Off Switch in Off Position..............................................................................................................................60
Figure 36. Power Cord Retaining Clip in the Up Position....................................................................................................60
Figure 37. Plugging in the AC Power Cord..........................................................................................................................61
Figure 38. Securing the Power Cord with the Retaining Clip...............................................................................................61
Figure 39. On/Off Switch in On Position..............................................................................................................................62
Figure 40. Positive, Frame Ground, and Negative Terminals..............................................................................................63
Figure 42. Connecting the Stripped Wire............................................................................................................................. 64
Figure 43. Connecting the Local Management Cable to the Terminal Port.........................................................................66
Figure 44. AT-S65 Main Menu............................................................................................................................................. 67
Figure 45. Connecting a Cable to the 10/100Base-T Port...................................................................................................68
Figure 46. DIN-8 RS-232 Connector and Port Pin Layouts.................................................................................................77
Figure 47. 10/100Base-TX Connector and Port Pinouts .....................................................................................................78
Figure 48. Ferrule in an SC Connector Plug........................................................................................................................79
Figure 49. Unclean and Clean Ferrule..........................................................................................
Figure 51. Rubbing the Ferrule Tip on the Cleaning Surface ..............................................................................................80
Figure 52. Lint-Free and Alcohol-Free Swabs .....................................................................................................................82
Figure 53. Cleaning a Recessed Ferrule.............................................................................................................................82
Table 2. AT-LX3811/x Line Cards ......................................................................................................................................20
Table 3. RDY LED ..............................................................................................................................................................23
Table 4. Tributary Side TX and RX LEDs ........................................................................................................................... 24
Table 5. Line Side TX and RX LEDs ..................................................................................................................................25
Table 6. Line Side Sync LED ..............................................................................................................................................27
Table 7. System LEDs ........................................................................................................................................................27
Table 8. Optical Power per Channel for Line Ports with Optical MUX/DEMUX Losses Included .......................................76
Table 9. Power Budget Per Channel ..................................................................................................................................76
Table 10. DIN-8 RS-232 Terminal Port Pinouts ..................................................................................................................77
Table 11. 10/100Base-TX Port Pinouts (MDIX Mode Only) ...............................................................................................78
11
Tables
12
Preface
This guide contains instructions on how to install an AT-LX3800U MultiService Transport System and contains the following sections:
“Safety Symbols Used in this Document” on page 14
“Where to Find Web-based Guides” on page 15
“Contacting Allied Telesyn” on page 16
13
Preface
Safety Symbols Used in this Document
This document uses the safety symbols defined in Table 1.
Table 1. Safety Symbols
SymbolMeaningDescription
CautionPerforming or omitting a specific action may
result in equipment damage or loss of data.
WarningPerforming or omitting a specific action may
result in electrical shock.
14
AT-LX3800U Multi-Service Transport System Installation and Maintenance Guide
Where to Find Web-based Guides
The installation and user guides for all Allied Telesyn products are
available in portable document format (PDF) on our web site at
www.alliedtelesyn.com. You can view the documents online or download
them onto a local workstation or server.
15
Preface
Contacting Allied Telesyn
This section provides Allied Telesyn contact information for technical
support as well as sales and corporate information.
Online SupportYou can request technical support online by accessing the Allied Telesyn
Knowledge Base: http://kb.alliedtelesyn.com. You can use the
Knowledge Base to submit questions to our technical support staff and
review answers to previously asked questions.
Email and
Telephone
Support
Returning
Products
Sales or
Corporate
Information
Management
Software Updates
For Technical Support via email or telephone, refer to the Support &
Services section of the Allied Telesyn web site: www.alliedtelesyn.com.
Products for return or repair must first be assigned a return materials
authorization (RMA) number. A product sent to Allied Telesyn without an
RMA number will be returned to the sender at the sender’s expense.
To obtain an RMA number, contact Allied Telesyn Technical Support
through our web site: www.alliedtelesyn.com.
You can contact Allied Telesyn for sales or corporate information through
our web site: www.alliedtelesyn.com. To find the contact information for
your country, select Contact Us -> Worldwide Contacts.
New releases of management software for our managed products are
available from either of the following Internet sites:
If you prefer to download new software from the Allied Telesyn FTP server
from your workstation’s command prompt, you will need FTP client
software and you must log in to the server. Enter “anonymous” for the user
name and your email address for the password.
Chapter 1
Overview
The AT-LX3800U Multi-service Transport System aggregates up to eight
multi-rate services into a single fiber optic link using small form-factor
pluggable (SFP) transceivers.
This chapter contains the following sections:
“System Description” on page 18
“Line Card Descriptions” on page 20
“AT-LX3801 Blank Slot Covers” on page 22
“LEDs” on page 23
“Management Connections” on page 29
“AT-LXPWR Power Supply Module” on page 30
“Power Connectors” on page 32
“Topologies” on page 33
17
Chapter 1: Overview
System Description
The AT-LX3800U Multi-service Transport System has the following
features:
An eight-slot chassis with integrated management module
One preinstalled AT-LXPWR/AC or AT-LXPWR/DC power supply in
the PWR A slot in the rear, with one expansion slot for an optional
redundant power supply unit. Both slots support any combination of
AC and DC power supplies.
Eight preinstalled AT-LX3801 Blank Slot Covers
Standard rack mounting or standalone
Eight AT-LX3811/x Multi-Service Line Cards available with industry
standard small form-factor pluggable (SFP) transceiver slots
Data rates from 100 MB to 2.5 GB
Numbered and color-coded system labels and line cards to eliminate
line card installation errors
Six LEDs per line card and four system LEDs
One RS-232 terminal port for local management
One 10/100Base-TX Ethernet port for remote management
Preinstalled AT-S65 management software for remote or local
management
The AT-LX3800U chassis is available with either an AC or a DC power
supply preinstalled.
18
AT-LX3800U Multi-Service Transport System Installation and Maintenance Guide
Figure 1 shows the front panel of the AT-LX3800U system.
Figure 2 shows the back panel of an AC-powered system.
RX and TX Ports
AT-LX3800U
8
LASER PRODUCT
100 10
RESET
CLASS 1
10/100Base-TX
TXRX
LINE
TERMINAL
RS-232
122
FT
CO
PA
PB
AT-LXPWR/AC
AT-LXPWR/DC
AC Power Supply
FOR CENTRALIZED DC
POWER CONNECTION,
INSTALL ONLY IN A
RESTRICTED ACCESS
LOCATION
DC Power Supply
40-60VDC
ON
100-240VAC~
PWR A
PWR B
Figure 2. Back Panel of an AT-LX3800U System Ordered with an AC
Power Supply Installed
Figure 3 shows the back panel of a DC-powered system.
ON
PWR A
PWR B
Figure 3. Back Panel of an AT-LX3800U System Ordered with a DC
Power Supply Installed
470
704
19
Chapter 1: Overview
Line Card Descriptions
The AT-LX3800U chassis can contain up to eight AT-LX3811/x line cards,
numbered and color-coded for insertion in the corresponding numbered
slot in the chassis, as described in Table 1.
Table 1. AT-LX3811/x Line Cards
ModelWavelength
AT-LX3811/114701
AT-LX3811/214902
AT-LX3811/315103
AT-LX3811/415304
AT-LX3811/515505
AT-LX3811/615706
AT-LX3811/715907
AT-LX3811/816108
Figure 4 shows a sample AT-LX3811/x line card.
Slot
Number
20
AT-LX3811/8
RDY
TRIB
TX
RX
SYNC
TX
LINE
SFP
RX
123
Figure 4. AT-LX3811/x Line Card
Note
The RDY LED on the line card flashes and the AT-S65 management
software displays an error if a line card is inserted in the wrong slot.
AT-LX3800U Multi-Service Transport System Installation and Maintenance Guide
The line cards are hot swappable into and out of the system. Each line
card can only be used in its dedicated slot.
Each AT-LX3811/x line card contains one SFP transceiver slot.
To install an AT-LX3811/x line card, refer to “Installing an AT-LX3811/x
Line Card” on page 50.
21
Chapter 1: Overview
AT-LX3801 Blank Slot Covers
The AT-LX3800U chassis is shipped with eight AT-LX3801 Blank Slot
Covers in place. The blank slot cover protects the fiber optic connectors
on the backplane from becoming dirty, and helps maintain proper air flow
through the chassis. A blank slot cover is shown in Figure 5.
AT-LX3801
176
Figure 5. AT-LX3801 Blank Slot Cover
Note
Allied Telesyn strongly recommends that a blank slot cover be
inserted in any slot that does not contain a functioning line card.
To install a blank slot cover that was removed from the chassis, refer to
“Installing an AT-LX3801 Blank Slot Cover” on page 55.
22
AT-LX3800U Multi-Service Transport System Installation and Maintenance Guide
SFP
SYNC
TX
RX
LINE
RDY
TX
RX
TRIB
LEDs
The AT-LX3800U provides two groups of LEDs, one group for each line
card and one group for the system.
Line Card LEDsEach line card has six LEDs, as shown in Figure 6.
Figure 6. Line Card LEDs
The line card LEDs include a RDY (Ready) LED that provides information
about the overall operation of the line card, and two groups marked TRIB
and LINE. The TRIB LEDs provide information about the tributary side of
the line card (the operation of the SFP), and the LINE LEDs display
information about the line side of the line card (the operation of the RX and
TX Wavelength Division Multiplexing (WDM) ports).
124
The LEDs are described in the following tables:
The RDY LED is described in Table 2.
The tributary side TX and RX LEDs are described in Table 3 on
page 24.
The line side TX and RX LEDs are described in Table 4 on page 25.
The line side Sync LED is described in Table 5 on page 27.
Table 2 describes the RDY LED on the tributary side.
Table 2. RDY LED
StateDescription
Flashing greenPower is on, but the card is in the wrong slot.
Note that when a new version of the AT-S65
management software is being downloaded, the
RDY LED may flash on all line cards until the
downloading is complete.
Solid greenPower is on and the card is in the correct slot.
OffThe line card is not receiving any power.
23
Chapter 1: Overview
Note
When you install or reinstall a line card, the AT-S65 management
software recognizes this change within 20 seconds.
The operation of the tributary side TX and RX LEDs is affected by the
status of the Missing Link feature in the AT-S65 management software.
Table 3 describes the TX and RX LEDs on the tributary side.
Table 3. Tributary Side TX and RX LEDs
Missing Link
State
TX and RX
State
EnabledTX: Solid green
RX: Solid green
TX: Off or
flashing green
RX: Solid green
TX: Flashing
green
RX: Off
Description
The SFP port has established a
link with its local end node as well
as with its corresponding end
node connected to the remote
system.
The SFP port is receiving packets
or a link signal from its local end
node but has not established a link
with its corresponding remote end
node connected to the remote
system.
Or, the port was manually disabled
using the AT-S65 software, but is
still receiving packets or a link
signal from its local end node.
The SFP port has not established
a link with its local end node. It is
receiving packets or a link signal
from its corresponding remote end
node connected to the remote
system.
24
TX: Off
RX: Off
No SFP is installed.
Or, the port was manually shut
down using the AT-S65
management software and the
local end node connected to the
port was powered off.
Or, the cable to the SFP port was
disconnected.
AT-LX3800U Multi-Service Transport System Installation and Maintenance Guide
Table 3. Tributary Side TX and RX LEDs (Continued)
Missing Link
State
TX and RX
State
DisabledTX: Solid green
RX: Solid green
TX: Solid green
RX: Off
TX: Off
RX: Solid green
TX: Off
RX: Off
Description
The SFP port has established a
link with its end node.
The SFP port is transmitting
packets or a link signal but has not
established a link to its local end
node.
The port was manually shut down
using the AT-S65 management
software, but is still receiving
packets or a link signal from its
local end node.
No SFP is installed.
Or, the port was manually shut
down using the AT-S65
management software and the
end node connected to the port
was powered off.
Or, the cable to the SFP port was
disconnected.
The operation of the line side TX and RX LEDs is affected by the status of
the Missing Link feature in the AT-S65 management software. Table 4
describes the line side TX and RX LEDs.
Table 4. Line Side TX and RX LEDs
Missing Link
State
EnabledTX: Solid green
TX and RX
State
RX: Solid green
Description
The line port has established a link
with its corresponding end node
connected to the remote system.
TX: Off
RX: Off
The line port is not receiving or
sending packets.
Or, the port was manually shut
down using the AT-S65
management software while the
port was not receiving packets or a
signal.
25
Chapter 1: Overview
Table 4. Line Side TX and RX LEDs (Continued)
Missing Link
State
TX and RX
State
EnabledTX: Flashing
green
RX: Off
TX: Off
RX: Flashing
green
DisabledTX: Solid green
RX: Solid green
TX: Flashing
green
RX: Off
Description
The line port has not established a
link with its corresponding end
node on the remote system and
the line port is not receiving
packets or a signal.
The local SFP port has not
established a link with its
corresponding local end node.
Or, the line port is not receiving
packets or a signal.
Or, the port was manually shut
down using the AT-S65
management software while the
port was receiving packets or a
signal.
The line port has established a link
with the remote line port.
The line port has not established a
link with the remote line port.
TX: Off
RX: Flashing
green
TX: Off
RX: Off
The port was manually shut down
using the AT-S65 management
software but is still receiving
packets or a link signal from its
remote end node.
The port was manually shut down
using the AT-S65 management
software.
Or, the optical cable to the remote
line port is disconnected.
26
AT-LX3800U Multi-Service Transport System Installation and Maintenance Guide
CLASS 1
LASER PRODUCT
100 10
10/100Base-TX
RS-232
TERMINAL
FT
CO
PA
PB
RESET
Table 6 describes the line side Sync LED.
Table 5. Line Side Sync LED
StateDescription
Fast flashing greenThe RX path signal is synchronized.
Slow flashing greenThe TX path signal is synchronized.
Solid greenBoth the RX and TX path signals are
synchronized.
OffNo activity.
System LEDsTo the right of the RS-232 terminal port are four system LEDs, as shown in
Figure 7 and described in Table 6.
125
Figure 7. System LEDs
Table 6. System LEDs
LEDDefinitionStateDescription
FTFaultSolid redSystem fault.
COConsoleSolid greenUser is logged in to the system
through the RS-232 terminal port.
Flashing greenA management software update is
being downloaded through the
RS-232 terminal port.
PAPower supply
Solid greenNormal operation.
slot A
Fast flashing greenThe output of the power supply in slot
A is not OK.
Slow flashing greenThe operation of the power supply in
slot A is normal but one or two fans
have failed.
27
Chapter 1: Overview
LEDDefinitionStateDescription
Table 6. System LEDs (Continued)
PBPower supply
slot B
Solid greenNormal operation.
Fast flashing greenThe output of the power supply in slot
B is not OK.
Slow flashing greenThe operation of the power supply in
slot B is normal but one or two fans
have failed.
28
AT-LX3800U Multi-Service Transport System Installation and Maintenance Guide
Management Connections
The AT-LX3800U chassis provides two management connections to the
preinstalled AT-S65 management software:
RS-232 terminal port for local (out-of-band) management
10/100Base-TX Ethernet port for remote management using Telnet
Terminal PortYou can use the terminal port to establish a local (out-of-band)
management session with the chassis to configure parameters and also
view information about the operating of the system and line cards. You
establish a local management session with the switch by connecting either
a terminal, or a personal computer with a terminal emulation program, to
the port.
The terminal port has a DIN-8 style connector. A management cable is
supplied with the chassis.
10/100Base-TX
Ethernet Port
The terminal port is set to the following specifications:
You can use the AT-S65 management software to change the terminal
port settings.
You can also manage the AT-LX3800U chassis from any workstation on
your network through the 10/100Base-TX Ethernet port using Telnet.
29
Chapter 1: Overview
AT-LXPWR Power Supply Module
The AT-LX3800U chassis is shipped with one AT-LXPWR power supply
preinstalled in slot A, and one empty slot (B) for an optional redundant
power supply (RPS). Two power supply versions, AC and DC, are
available for the AT-LX3800U chassis, as described below. Both slots
support any combination of AC and DC power supplies.
When two power supplies are installed, one of them works in standby
mode while the other one provides full power to the chassis. If one power
supply fails, the remaining power supply provides all the power to the
system, preventing a system failure.
AT-LXPWR/AC
Power Supply
The AT-LXPWR/AC power supply is shown in Figure 8.
AT-LXPWRAC
ON
100-240V
AC
~
126
Figure 8. AT-LXPWR/AC Power Supply
For information about installing an AT-LXPWR/AC power supply, consult
the documentation that is shipped with the unit.
30
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