COMPLIANCE INFORMATION
UL Listed
C-UL Listed (Canada)
CISPR/EN55022 Class A
FCC Regulations
This equipment has been tested and found to comply with the limits for a class A digital device, pursuant
to part 15 of the 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 the
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 the user’s own expense.
Canadian Regulations
This digital apparatus does not exceed the Class A limits for radio noise for digital apparatus set out on
the radio interference regulations of the Canadian Department of Communications.
Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites applicables
aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique
édicté par le ministère des Communications du Canada.
European Regulations
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.
Achtung !
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes
Rundfunkstörungen auftreten, in weichen Fällen der Benutzer für entsprechende Gegenmaßnahmen
werantwortlich ist.
Attention !
Ceci est un produit de Classe A. Dans un environment domestique, ce produit risque de créer des
interférences radioélectriques, il appartiendra alors à l’utilsateur de prende les measures spécifiques
appropriées
VCCI Class 1 Compliance
This equipment is in the 1st Class category (information equipment to be used in commercial and/or
industrial areas) and conforms to the standards set by the Voluntary Control Council For Interference by
Data Processing Equipment and Electronic Office Machines aimed at preventing radio interference in
commercial and/or industrial areas. When used in a residential area or in an adjacent area thereto,
interference may be caused to radio and TV receivers, etc. Read the instructions for correct handling.
Trademark Notice
All registered trademarks and trademarks are the property of their respective owners.
Copyright Restrictions
© 2000 Black Box Corporation.
All rights reserved. No part of this work may be reproduced or used in any form or by any means –
graphic, electronic, or mechanical – without written permission from Black Box Corporation..
Printed in the U.S.A. 33164.B
CAUTION: RJ connectors are NOT INTENDED FOR CONNECTION TO THE
PUBLIC TELEPHONE NETWORK. Failure to observe this caution could result in
damage to the public telephone network.
Der Anschluss dieses Gerätes an ein öffentlickes Telekommunikationsnetz in den EG-Mitgliedstaaten
verstösst gegen die jeweligen einzelstaatlichen Gesetze zur Anwendung der Richtlinie 91/263/EWG zur
Angleichung der Rechtsvorschriften der Mitgliedstaaten über Telekommunikationsendeinrichtungen
einschliesslich der gegenseitigen Anerkennung ihrer Konformität.
The Black Box Corporation LE2127A-R3 series transceiver with LinkAlert
™
is a media access unit (MAU) that connects the AUI port of any DTE,
repeater, or other network device, either directly or through an AUI cable,
to an Ethernet
™
10BASE-FL device. The 10BASE-FL device is connected to
the LE2127A-R3 media converter through multimode fiber OR singlemode
fiber, selected by LE2127A-R3 model number.
NOTE: The LE2127A-R3 functions
either in half-duplex mode or in fullduplex mode, depending upon the
network devices to which the media
converter is attached.
AUI/10BASE-FL
Transceiver
LE2127A-R3, LE2127A-SC-R3, LE2127A-SM-R3
USER’S GUIDE
LE2127A-R3 in the Network . . . . . . .2
Installation . . . . . . . . . . . . . . . . . . . .3
Operation . . . . . . . . . . . . . . . . . . . . .4
Fault Isolation and Correction . . . . .5
Cable Specifications . . . . . . . . . . . . .6
Technical Specifications . . . . . . . . . .7
Compliance Information . . . . . . . . . .8
STATUS
RX
TX
COL
ON = OK
LE2127A-R3
Provides an AUI connector and a set of
RX (receive) and TX (transmit) ST
connectors to 10BASE-FL 850nm
multimode fiber.
LE2127A-SC-R3
Provides an AUI connector and an RX
(receive) /TX (transmit) SC connector to
10BASE-FL 850nm multimode fiber.
LE2127A-SM-R3
Provides an AUI connector and a set of
RX (receive) and TX (transmit) ST
connectors to 10BASE-FL 1300nm
singlemode fiber.
LE2127A-R3 IN THE NETWORK
NOTE: AUI drop cable also can be used to connect to the transceiver.
Using LinkAlert™
The LinkAlert™ feature allows the transceiver to pass 10BASE-FL-side link faults
to the AUI side and to pass AUI-side link faults to the 10BASE-FL side.
TECHNICAL SPECIFICATIONS
Standards IEEE 802.3
Case Dimensions 3.8" x 1.65" x 0.94 inches (95 mm x 42 mm x 24 mm)
Weight 3.5 oz. (99.2 g)
Environment Temperature: 0-40°C (32° to 104° F )
Humidity 10-90%, non condensing
Altitude 0-10,000 feet
Power 11.4 - 16.5 VDC,
175 mA (typical), 300 mA (maximum)
Warranty Lifetime
DECLARATION OF CONFORMITY
Name of Mfg: Black Box Corporation
1000 Park Drive, Lawrence PA 15055 USA
Model: AUI/10BASE-FL Transceiver
Part Number: LE2127A-R3, LE2127A-SC-R3, LE2127A-SM-R3
Regulation: EMC Directive 89/336/EEC
Purpose: To declare that the LE2127A-R3to which this declaration refers is in
conformity with the following standards.
EMC-CISPR 22: 1985 Class A; EN 55022: 1988 Class A; EN 50082-1:1992;
EN 60950 A4:1997; IEC 801.2, IEC 801.3, and IEC 801.4; IEC 950
I, the undersigned, hereby declare that the equipment specified above conforms to the
above Directive(s) and Standard(s).
_January 11, 2000_____
Stephen Anderson, Vice-President of Engineering Date
10BASE-FL Hub
OR
OR
Hub with AUI connector
SQE = ON
STATUS
RX
TX
COL
ON = OK
STATUS
RX
TX
COL
ON = OK
STATUS
RX
TX
COL
ON = OK
SQE = OFF
SQE = ON
10BASE-FL
Device
Transceiver
FAULT INDICATION*
LINK FAULT INDICATION
Network
Device
AUI
CABLE SPECIFICATIONS
The physical characteristics of the media cable must meet or exceed IEEE 802.3
specifications.
Fiber Cable
Multimode Cable Recommended: 62.5 / 125 µm multimode fiber
Optional: 100 / 140 µm multimode fiber
85 / 125 µm multimode fiber
50 / 125 µm multimode fiber
Singlemode Cable Recommended: 9/125 µm singlemode fiber
Bit error rate: ≤10
-9
LE2127A-R3 850nm multimode - with ST connectors
Fiber-optic Transmitter Power: min: -16.0 dBm max: -10.0 dBm
Fiber-optic Receiver Sensitivity: min: -29.5 dBm max: -7.2 dBm
Typical Maximum Cable Distance*: 2 kilometers (6,600 feet)
LE2127A-R3(SC) 850nm multimode - with SC connector
Fiber-optic Transmitter Power: min: -16.0 dBm max: -10.0 dBm
Fiber-optic Receiver Sensitivity: min: -29.5 dBm max: -7.2 dBm
Typical Maximum Cable Distance*: 2 kilometers (6,600 feet)
LE2127A-R3(SM) 1300nm singlemode - with ST connectors
Fiber-optic Transmitter Power: min: -27.0 dBm max: -14.0 dBm
Fiber-optic Receiver Sensitivity: min: -34.0 dBm max: -14.0 dBm
Typical Maximum Cable Distance*: 20 kilometers (66,000 feet)
*Actual distance dependent upon physical characteristics of network installation.
AUI (DB-15) Interface
INSTALLATION
Set Switches
NOTE: UP enables the indicated function on
the 4-position switch located to the right of the
10BASE-FL connector and DOWN disables the
indicated function.
1 SQE Test: (UP) Enable SQE test
function when connecting to other devices. (DOWN) Disable SQE
test function when connecting to IEEE 802.3 compliant repeaters.
Default is enabled (UP).
2 LinkALERT: (UP) Enable the LinkALERT
™ function. (DOWN)
Enable standard Link Integrity Test. Default is enabled (UP).
3 Half-Duplex/Full-Duplex Mode: (UP) Enable half-duplex mode
when connecting to half-duplex network devices. (DOWN) Enable
full-duplex mode when connecting to full-duplex network devices.
Default is enabled (UP) NOTE: DO NOT USE FULL-DUPLEX
WHEN CONNECTING THE
TRANSCEIVER TO A REPEATER.
4 Not Used
Install Cable
NOTE: See page 6 for cable specifications and configurations.
FIBER
• Locate or build 10BASE-FL compliant fiber cable with male twostranded TX to RX connectors at both ends.
• Connect male TX and RX cable connectors at one end of cable to
TX and RX female connectors, respectively, on media converter.
• Connect female TX and RX cable connectors at other end of
cable to RX and TX connectors of 802.3 compliant fiber device.
AUI
DROP CABLE
• Connect AUI drop cable female connector to male AUI (DTE)
connector on LE2127A-R3.
• Connect other end of AUI drop cable to 10BASE-5 network.
NETWORK DEVICE
• Connect device female connector to male AUI (DTE) connector
on LE2127A-R3.
Connect to Power
The LE2127A-R3 is powered through the AUI connection.
Parameter Minimum Typical Maximum
Transmit
Transmit threshold voltage level: -140mV -170mV -190mV
Transmit turn on delay: 100ns
Transmit steady propagation delay: 15ns 50ns
Transmit loop back start up delay: 500ns
Transmit turn off to data idle: 400ns 2100ns
SQE test delay: 0.6 µ sec 1.6 µ sec
SQE test duration: 0.5 µ sec 1.0 µ sec 1.5 µ sec
Receive
Receive turn on delay: 350ns
Receive steady propagation delay: 15ns 50ns
Differential output voltage (RX(-/+)): (+/-)550mV (+/-)1200
Differential output voltage (col(-/+)): (+/-)550mV (+-)1200
Differential output rise time (RX(-/+), col(-/+)): 4ns
Differential output fall time (RX(-/+), col(-/+)): 4ns
Collision
Time for SQE to deact. after collision: 450ns 700ns
Collision frequency: 8.5MHz 11.5MHz
Collision pulse duty cycle: 40% 50% 60%
SQE test delay: 0.6 µ sec 1.6 µ sec
Jabber activation delay: 20ms 70ms 150ms
1 2 3 4
OPERATION
After installation, the transceiver should function without operator intervention.
Status LEDs
Use the status LEDs to monitor transceiver operation in the network.
STATUS
ON=OK Steady green
LED indicates
normal
operation.
Link Down:
One (1)
continuous,
flashing blink indicates no data packet or link
integrity pulse being received over fiber.
Local Jabber: Two (2) continuous, flashing blinks
indicate AUI packets are too long.
Dark LED indicates NO connection to external
power.
C0L(lision): Illuminated amber LED indicates signal collisions on the
Ethernet cable.
TX Flashing or illuminated amber LED indicates packet
transmission (AUI to fiber).
RX Flashing or illuminated amber LED indicates packet
reception (fiber to AUI).
FAULT ISOLATION and CORRECTION
If the transceiver fails, determine the answers to the following questions:
1. Is the STATUS LED on the transceiver illuminated?
NO
• Verify that the transceiver is installed properly in the AUI port and
that the DTE device is powered ON?
• Contact Technical Support.
YES
• Proceed to step 2.
2. Is the RX LED illuminated?
NO
• Check fiber cables for proper connection.
• Contact Technical Support.
YES
• Proceed to step 3.
3. Is the TX LED illuminated?
NO
• Check AUI cables for proper connection.
• Restart the workstation to restart the initialization process.
• Contact Technical Support.
YES
• Contact Technical Support.
STATUS
RX
TX
COL
ON = OK
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