USER
MANUAL
MODEL 2111
2-User
Network Access Bridge
Part# 07M2111-A
Doc# 033071U
, Rev. B
Revised 1/23/08
SALES OFFICE
(301)975-1000
TECHNICAL SUPPORT
(301)975-1007
http://www.patton.com
CERTIFIED
An ISO-9001
Certified
Company
1.0 WWARRANTY IINFORMATION
Patton Electronics warrants all Model 2111 components to be
free from defects, and will—at our option—repair or replace the product should it fail within one year from the first date of shipment.
This warranty is limited to defects in workmanship or materials,
and does not cover customer damage, abuse or unauthorized modification. If this product fails or does not perform as warranted, your sole
recourse shall be repair or replacement as described above. Under no
condition shall Patton Electronics be liable for any damages incurred
by the use of this product. These damages include, but are not limited
to, the following: lost profits, lost savings and incidental or consequential damages arising from the use of or inability to use this product.
Patton Electronics specifically disclaims all other warranties,
expressed or implied, and the installation or use of this product shall
be deemed an acceptance of these terms by the user.
1.1 RADIO AND TV INTERFERENCE
The Model 2111 generates and uses radio frequency energy, and
if not installed and used properly—that is, in strict accordance with the
manufacturer's instructions—may cause interference to radio and television reception. The Model 2111 has been tested and found to comply with the limits for a Class A computing device in accordance with
the specifications in Subpart J of Part 15 of FCC rules, which are
designed to provide reasonable protection from such interference in a
commercial installation. However, there is no guarantee that interference will not occur in a particular installation. If the Model 2111 does
cause interference to radio or television reception, which can be determined by disconnecting the unit, the user is encouraged to try to correct the interference by one or more of the following measures: moving the computing equipment away from the receiver, re-orienting the
receiving antenna and/or plugging the receiving equipment into a different AC outlet (such that the computing equipment and receiver are on
different branches).
1.2 CE NOTICE
The CE symbol on your Patton Electronics equipment indicates
that it is in compliance with the Electromagnetic Compatibility (EMC)
directive and the Low Voltage Directive (LVD) of the European Union
(EU). A Certificate of Compliance is available by contacting Technical
Support.
2.0 GENERAL INFORMATION
Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected and tested and is warranted for One Year parts and labor. If any questions or problems arise
during installation or use of this product, please do not hesitate to contact Patton Electronics Technical Support at (301) 975-1000.
2.1 FEATURES
• Easy to Install -- No Configuration Required
• Full duplex bridging function over two wires
• Provides MAC level connection between two peer Ethernet LANs
• Operates transparently to higher level protocols such as TCP/IP,
DECnet, NETBIOS and IPX
• Automatically discovers, loads and deletes MAC addresses
• Point to Point distance of 5 Miles
• Loopback and pattern generator diagnostic
• LED indicators for TD, RD, CTS, CD, DTR, TM, ER and NS
for line status
• LED indicators for status and link integrity for Ethernet port
• Made in the U.S.A.
2.2 DESCRIPTION
The Patton Electronics Model 2111-CO and 2111-CP Ethernet
LAN Bridge Extenders provide seamless LAN extension between
peered Ethernet LANs with all of the benefits of MAC level bridging.
You already own the twisted pair, why not use it to forward Ethernet
data to another Ethernet LAN -- up to 5 miles away!
Operating in pairs with a Model 2111-CO (looks like Central Office
equipment) on one end and a Model 2111-CP (looks like Customer
Premises equipment) on the other end, can automatically forward LAN
broadcasts, multi-casts and frames across the 2-Wire twisted pair link.
What’s more, the 2111s automatically add and delete MAC addresses,
only passing packets across the twisted pair that are meant for the
remote peered LAN. Higher level protocols such as TCP/IP, DECnet,
NETBIOS and IPX pass transparently through the Model 2111s without
modification.
3.0 INSTALLATION
The Model 2111 requires no configuration. You only need to connect the Ethernet interface, line interface between the units and power.
This section describes these connections.
3.1 CONNECTING THE TWISTED PAIR LINE INTERFACE
The Model 2111 supports communication between two peer
Ethernet LAN sites at a distance up to 5 miles (8 km) over 24AWG
(.5mm) twisted pair wire. Follow the steps below to successfully connect the Model 2111 Line Interfaces.
1. These units work in
pairs
. One unit in the pair must be a
Model 2111-CO (looks like Central Office equipment), and the
other unit must be a Model 2111-CP (looks like Customer
Premises equipment). It does not matter which end is the
2111-CO and which is the 2111-CP.
2. To function properly, the two Model 2111s must be connected
together using twisted pair metallic wire. This twisted pair
must be
unconditioned
, dry, metallic wire, between 19
(.9mm) and 26 AWG (.4mm). Standard dial-up telephone circuits, or leased circuits that run through signal equalization
equipment, or standard, flat modular telephone type cable,
are
not acceptable
.
Figure 2. Model 2111 Rear Panel.
Line
Interface
10BaseT
Interface
IEC Power
Jack
Power
Switch
3.2 CONNECTING THE 10BASET ETHERNET INTERFACE
The RJ-45 jack labeled “Interface Port” is the 10BaseT interface.
This port is designed to connect directly to a 10BaseT network. Figure
4, below, shows the Signal/Pin relationships on this interface. You may
connect this port to another Ethernet port via a Type 4 or Type 5 cable
that is up to 330 feet long.
3.2.1 Connecting the 10Base-T Ethernet Port to a Hub
The Model 2111 10Base-T interface is configured as DTE (Data
Terminal Equipment), just like a 10Base-T network interface card in a
PC. Therefore, it “expects” to connect to a 10Base-T Hub using a
straight-through RJ-45 cable. Use the diagram below to construct a
cable to connect the 2111 to a 10Base-T Hub.
2111 10Base-T Hub
RJ-45 Pin No. RJ-45 Pin No.
1 (TX+) -------------------------------------------------1 (RX+)
2 (TX-)--------------------------------------------------2 (RX-)
3 (RX+)-------------------------------------------------3 (TX+)
6 (RX-)--------------------------------------------------6 (TX-)
3.2.2 Connecting the 10Base-T Ethernet Port to a PC (DTE)
The Model 21111 10Base-T interface is configured as DTE (Data
Terminal Equipment). If you wish to connect the 2111 to another DTE
device such as a 10Base-T network interface card in a PC, you must
construct a 10Base-T crossover cable as shown in the diagram below.
2111 10Base-T DTE
RJ-45 Pin No. RJ-45 Pin No.
1 (TX+) 1 (TX+)
2 (TX-) 2 (TX-)
3 (RX+) 3 (RX+)
6 (RX-) 6 (RX-)
Figure 4. Line Interface.
1 TD+ (data output from 2111
2 TD- (data output from 2111)
3 RD+ (data input to 2111)
4 (no connection)
5 (no connection)
6 RD- (data input to 2111)
7 (no connection)
8 (no connection)
1
2
3
4
5
6
7
8
4.0 OPERATION
Once the Model 2111 is properly installed, it should operate transparently. This sections describes power-up, reading the LED status
monitors, and using the built-in loopback test modes.
4.1 POWER-UP
To apply power to the Model 2111, first be sure that you have read
Section 3.3, and that the unit is connected to the appropriate power
source. Then power-up the unit using the rear power switch.
4.2 FRONT PANEL LED STATUS MONITORS
The Model 2111 features eight front panel LEDs that monitor
power, the Ethernet signals, network connection and test modes.
Figure 4 (below) shows the front panel location of each LED.
Following Figure 4 is a description of each LEDs function.
TD & RD Glows red to indicate an idle condition of Binary
“1” data on the respective terminal interface signals.
Green indicates Binary “0” data.
CTS Glows green to indicate that the Clear to Send
signal from the modem is active.
CD Glows red if no carrier signal is being received from
the remote modem. Green indicates that the remote
modem’s carrier is being received.
DTR Glows green to indicate that the Data Terminal
Ready signal from the terminal is active.
ER Glows red to indicate the likelihood of a Bit Error in
the received signal. During the 511 or 511/E test, ER
will flash to indicate that the Test Pattern Detector
has detected a bit error.
Figure 4. Model 2111 Front Panel
11 Detected LAN receive frame(s) with bad CRC.
Link Glows green to indicate good link integrity on the
10Base-T twisted pair line.
4.4 TEST MODES
The Model 2111 offers a proprietary loopback test mode, plus a
built-in V.52 BER test pattern generator, to evaluate the condition of
the modems and the communication link. These tests can be activated
physically from the front panel.
4.4.1 Using Local Line Loopback (LLB)
The Local Line Loopback (LLB) test checks the operation of the
local Model 2111, and is performed separately on each unit. Any data
sent to the local Model 2111 in this test mode will be echoed (returned)
back to the user device.
To perform a LLB test, follow these steps:
1. Activate LLB. Move the front panel toggle switch UP to
“Local”. Once LLB is activated, the Model 2111 transmitter
output is connected to its own receiver. The “TM” LED should
be lit.
2. Verify that the data terminal equipment is operating properly
and can be used for a test. If a fault is indicated, call a
technician or replace the unit.
4.4.2 Remote Digital Loopback (RDL)
Remote Digital Loopback (RDL) is not an available feature on the
Model 2111.
4.4.3 Using the V.52 (BER) Test Pattern Generator
To use the V.52 BER tests in conjunction with the loopback test follow
these instructions:
1. Locate the “511/511E” toggle switch on the front panel of the
2111 and move it UP. This activates the V.52 BER test
mode and transmits a “511” test pattern into the loop. If any
errors are present, the local modem’s red “ER” LED will blink
sporadically.
APPENDIX A
PATTON ELECTRONICS MODEL 2111 SPECIFICATIONS
LAN Connection: RJ-45, 10Base-T, IEEE 802.3 Ethernet
MAC Address Table Size: 4096 entries
MAC Address Aging: MAC addresses deleted after 8 minutes
inactivity
On-board Memory: 512 KB RAM; 128 KB FLASH
Frame Latency: 1 frame
Transmission Line: Two-Wire unconditioned twisted pair
Diagnostics: V.52 compliant bit error rate pattern
(511/511E pattern) generator and detec
tor with error injection mode; Local Line
Loopback activated by front panel switch
LED Status Indicators: TD, RD, CTS, CD, DTR, NS(no signal),
ER (error), TM (test mode) on front
panel; (1) general status; (1) link integri
ty on rear panel
Connectors: RJ-45 on line side; RJ-45 on Ethernet
Port
Power: 100-253 VAC, 50-60 Hz (universal
input);
Temperature Range: 32-122°F (0° -50°C)
Altitude: 0-15,000 feet
Humidity: 5 to 95% non-condensing
Dimensions:
7.3” x 6.6” x 1.62” (185mm x 168mm x
41mm)
APPENDIX CC
MODEL 2111 INTERFACE PIN ASSIGNMENT
10BASE-T Interface Pin Description
(RJ-45 Female Connector)
(DTE Configuration)
1 TD+ (data output from 2111)
2 TD- (data output from 2111)
3 RD+ (data input to 2111)
4 (no connection)
5 (no connection)
6 RD- (data input to 2111)
7 (no connection)
8 (no connection)
1
2
3
4
5
6
7
8
Dear Valued Customer,
Thank you for purchasing Patton Electronics products! We
do appreciate your business. I trust that you find this user manual
helpful.
We manufacture one of the widest selections of data commu-
nications products in the world including CSU/DSU's, network termination units, powered and self-powered short range modems, fiber optic
modems, interface converters, baluns, electronic data switches, dataline surge protectors, multiplexers, transceivers, hubs, print servers
and much more. We produce these products at our Gaithersburg, MD,
USA, facility, and can custom manufacture products for your unique
needs.
We would like to hear from you. Please contact us in any of
the following ways to tell us how you like this product and how we can
meet your product needs today and in the future.
Web: http://www.patton.com
Sales E-mail: sales@patton.com
Support E-mail: support@patton.com
Phone - Sales (301) 975-1000
Phone - Support (301) 975-1007
Fax: (301) 869-9293
Mail: Patton Electronics Company
7622 Rickenbacker Drive
Gaithersburg, MD 20879 USA
We are committed to a quality product at a quality price.
Patton Electronics is ISO 9001 certified. We meet and
exceed the highest standards in the industry (CE, UL, etc.).
It is our business to serve you. If you are not satisfied with
any aspect of this product or the service provided from Patton
Electronics or its distributors, please let me
know.
Thank you.
Burton A.Patton
Vice President
P.S. Please tell us where you purchased this product.
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