Lantronix LTR16T Installation Manual Download Page 32 | Manualshive

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Appendix B-26

LTR-T Installation Guide

For most environments, it is acceptable to use standard 24 AWG unshielded twisted pair
(UTP) telephone wire as your network medium. However, if the network is to be
installed in a “noisy” environment (a location with high electromagnetic interference) it
may be necessary to use a data-grade UTP cable instead. In extreme cases, it may be
necessary to install shielded twisted pair (STP) cable for specific network segments,
however, the use of STP cable is beyond the scope of this manual.

In general, phone signals and 10BASE-T signals can be carried by different pairs of the
same length of UTP cable. Verify this with your local telephone installer or network
managers before using your cabling in this way

For additional networking information, please consult your equipment dealer.

RJ45 Pinout

RJ45 Port

12345678

RJ45
Connector

12345678

Ports 1-7 and 9-15 always use straight-
through cables to connect to transceivers.

Ports 8 & 16 use straight-through cables to
connect to transceivers when in MDI-X mode
and to other hubs when in MDI mode.

MDI
Pin 1: Tx+
Pin 2: Tx-
Pin 3: Rx+
Pin 6: Rx-

Straight-through cable

MDI-X
Pin 1: Rx+
Pin 2: Rx-
Pin 3: Tx+
Pin 6: Tx-

MDI-X
Pin 1: Rx+
Pin 2: Rx-
Pin 3: Tx+
Pin 6: Tx-

Swapped (crossed) cable

MDI-X
Pin 1: Rx+
Pin 2: Rx-
Pin 3: Tx+
Pin 6: Tx-

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Summary of Contents for LTR16T

Page 1: ...LTR T Installation Guide ...

Page 2: ...exacting standards We strive to make all of our products easy to use and of the highest quality That s how we re able to support them with a five year warranty and free technical support I hope you find this manual easy to use and thorough in its explanation of the LTR T installation process Brad Freeburg President ...

Page 3: ...ection against harmful interference when operating in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with this guide may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause interference in which case the user at his or her own expense will b...

Page 4: ......

Page 5: ...4 Installation 5 Network Configuration 5 Cabling Instructions 7 Adding New Network Segments 9 Power up Sequence 10 Troubleshooting 12 Normal Operation 13 Configuration 14 Configuration Mode 15 Storing Configuration 17 Factory Defaults 17 10BASE T Wiring Conventions 18 Hub Interconnection 19 Maintenance Information 19 Glossary 20 Appendix A Power Supply Cord 23 Appendix B Cabling 25 Lantronix Probl...

Page 6: ...2b A Complex Network Configuration 6 Figure 3 LTR T front and back panels 7 Figure 4 Connecting the transceiver cable to the AUI port 8 Figure 5 Hub Interconnect Configuration 19 Tables Table 1 LTR T Power Requirements 3 Table 2 Parts List 4 Table 3 Power up Diagnostic codes 11 Table 4 Port Status LEDs 13 ...

Page 7: ... T ports for direct connection to UTP cable segments of up to 100 meters each 1 or 2 LTR16T AUI ports for attachment of external Thinwire 10BASE2 Thickwire 10BASE5 or UTP 10BASE T transceivers separate status and activity LEDs for each port user friendly interface allows configuration of link test and polarity correction and manual partitioning of individual ports automatic port partitioning disab...

Page 8: ...o inches of space on each side of the unit for ventilation LTR 8T LTR 16T Width 8 5 8 5 Depth 5 5 5 5 Height 2 8 3 8 Figure 1 LTR T Dimensions Environmental Considerations The following paragraphs list the power and temperature requirements altitude limitations and relative humidity limitations of the LTR T Check these values to guarantee that the LTR T can operate in the chosen location Power Req...

Page 9: ...et le cote de fusible T2A 250V VORSICHT Zum Schutz gegen das Risiko eines Brandes darf die Sicherung nur mit einer mit gleichen technischen Daten ersetzt werden T2A 250V Temperature Limitations Operating 5 to 50 C 41 to 122 F Nonoperating 40 to 66 C 40 to 151 F Rapid temperature changes may affect operation Therefore do not operate the LTR T near heating or cooling devices large windows or doors t...

Page 10: ...will need an AUI cable between the DELNI and the LTR T s AUI port Checking the Cable Connections Make sure you have enough cable to connect the LTR T to your network There are three types of cable connections you must consider 10BASE T UTP segments one or more each up to 100 meters long Power outlet should be within 1 8 m 6 ft of the LTR T AUI cable up to 50 meters if going directly to a transceiv...

Page 11: ...LTR T on the right is connected from the AUI to a Local Network Interconnect device You can connect one or more 10BASE T segments to the LTR T one to each port on the back of the unit Additionally you can connect multiple LTR T units together making sure that there are no more than four LTR T units between any two nodes See the Interconnection section below for important notes about interconnectin...

Page 12: ... only w same type and ratings of fu Serial geprüfte Sicherheit AUI1 8 7 6 5 4 3 2 1 LTR8T MDI X MDI X MDI THICKWIRE ETHERNET LTX 5 LTX 5 TRANSCEIVER TRANSCEIVER Local Network Interconnect host 95 250V 50 60Hz 0 5A T2A 250 This equipment complies with the requirements in Part 15 of FCC Rules for a Class A C and TV reception requiring the operator to take whatever steps necessary to correct th devic...

Page 13: ... type and ratings of fus Fabriqué aux Etats Unis Made in U S A Serial UL UL 1950 LISTED 6J40 Equipment LR 89493 IEC 950 geprüfte Sicherheit AUI 1 8 7 6 5 4 3 2 1 LTR8T MDI X MDI X MDI 15 pin AUI port 10BASE T ports AUI and 10BaseT Status Figure 3 LTR T Back and Front Panels 0 1 PWR COL STAT ACT AUI 1 2 3 4 5 6 7 8 MODE LTR8T Figure 3 LTR T Front and Back Panels WARNING During the installation proc...

Page 14: ...ansceiver or AUI cable to the LTR T first unlock the slide latch on the connector by sliding the clip to the right You may have to slightly loosen the screws on either side of the connector to move the latch Next connect the transceiver or cable connector to the AUI port of the LTR T Figure 4 Finally lock the transceiver cable in place by sliding the latch to the left 95 250V 50 60Hz 0 5A T2A 250 ...

Page 15: ...ed in the next section to check the status of the hardware If no LEDs come on refer to the Testing and Diagnostics section for troubleshooting suggestions Adding New Network Segments It is not necessary to remove power to the LTR T when adding new segments to an existing network However adding or removing an existing connection may disrupt the transmission of an individual Ethernet packet It is th...

Page 16: ...1 in that bit position while an unlit LED corresponds to a zero 0 in that bit position For example version 1 3 will be displayed as 0 0 0 1 0 0 1 1 off off off green off off green green Diagnostics After displaying the firmware version the LTR T will display the results of the power up diagnostics tests if any type of failure was detected Otherwise the LTR T will proceed directly to status mode Di...

Page 17: ...r board failure LTR16T 0000 0010 NVR failure 0000 0100 Inter board communication failure LTR16T Having failed power up diagnostics the LTR T will disable all ports and continue to display the diagnostic code indefinitely Lantronix or your dealer should be contacted Table 3 Power up Diagnostic Codes Upon successfully completing the power up diagnostics the LTR T will begin normal operation in statu...

Page 18: ...however you must make sure the unit is properly grounded 2 Check that the LEDs light when the POWER switch is turned on If they do not light check the fuse on the back of the unit to make sure that it is not blown 3 Check that the LTR T successfully completes the Power Up diagnostics The Power Up diagnostics are described earlier in this section Refer to Table 3 for an explanation of the LEDs disp...

Page 19: ...utomatically partitioned from the network due to excessive collisions Note ports which have link test enabled but are not connected to a device at the opposite end of the segment will fail the link test The port has been automatically partitioned from the network due to excessive collisions In this state the port continues to transmit but receive data and collisions are ignored until the LTR T is ...

Page 20: ... user to prevent ports from transmitting data to or receiving data from the attached segment in effect disabling the port Note the LTR T will automatically partition from the network any port on which it detects excessive collisions This is different from disabling a port via manual partitioning in that auto partitioned ports are re instated to the network as soon as the LTR T decides that the seg...

Page 21: ...ted by this function The first time a function is entered all ports are selected by default Pressing B repeatedly selects each single port in turn Once port 8 or 16 for the LTR16T is reached the next port will return to either the AUI port or UTP port 1 depending on the function The ACT LEDs show which ports are selected For each function the left MODE E button toggles the current function for the...

Page 22: ...ote that this function can be performed on both AUI and UTP ports In the case of manual partition the STAT LEDs display RED for those ports which have been manually partitioned from the network To exit manual partition mode press both MODE buttons simultaneously Reconnection algorithm mode indicated by the blinking red PWR LED is entered after manual partition mode In this mode the LTR T can enabl...

Page 23: ...to status mode upon completing the operation In the event of a power failure the LTR T will be restored to the most recently saved configuration on power up If no configuration has been stored the LTR T will power up to the factory default configuration described below Factory Defaults The LTR T can be restored to the factory default configuration by pressing both MODE buttons while powering up th...

Page 24: ...on behind using two different interface types is to simplify the wiring between devices For proper operation the transmit signal pair at one interface must connect to the receive signal pair at the second interface and vice versa Since MDI devices are usually connected to MDI X devices a straight through cable works in most cases A swapped cable exchanges the transmit signal pair with the receive ...

Page 25: ...f the hubs are connected as MDI X to MDI X and a straight through cable is used See Figures 2b and 5 for example networks 95 250V 50 60Hz 0 5 T2A 250V This equipment complies with the requirements in Part 15 of FCC Rules for a Class A and TV reception requiring the operator to take whatever steps necessary to correct th device Operation of this equipment in a residential area may cause unacceptabl...

Page 26: ... and receiving Ethernet traffic This can be a workstation terminal server printer etc In general any device with its own ethernet address is a node Repeaters and LNIs are not nodes as they only regenerate traffic that is already on the network Port Partitioning The ability to temporarily disable one segment of a network while continuing communication on the other segments The LTR T allows the user...

Page 27: ... 10BASE2 Ethernet An alternative physical layer for Ethernet specified as IEEE 802 3 10BASE2 It is a more flexible cable than Thickwire Ethernet with less stringent rules for attaching to the cable Maximum segment length is 185 meters It is specified as 50 ohm RG58 cable and is often referred to as Cheapernet Transceiver In general a device used to connect a network node device to the Ethernet med...

Page 28: ......

Page 29: ...figuration appropriate to the country in question Grounding Warning To reduce the risk of electric shock in countries using an IT power system or where protective earth ground connection is not made the ground conductor of the power cable should be connected to earth ground Approvals The cord connectors should bear the approval mark of at least one of the following regulatory and safety agencies E...

Page 30: ......

Page 31: ...trasts with Thinwire and Thickwire Ethernet which connect each node to a coaxial cable in a bus topology UTP is ideal for small office environments because the cable is less expensive and easier to install than Ethernet coaxial cable The connection from the user s system to the network is made via a single UTP cable therefore no complex cable handling is required Many configurations are possible S...

Page 32: ...ls and 10BASE T signals can be carried by different pairs of the same length of UTP cable Verify this with your local telephone installer or network managers before using your cabling in this way For additional networking information please consult your equipment dealer RJ45 Pinout RJ45 Port 12345678 RJ45 Connector 12345678 Ports 1 7 and 9 15 always use straight through cables to connect to transc...

Page 33: ...AX 714 453 3995 Direct Sales 1 800 422 7055 Technical Support 1 800 422 7044 Internet email address support lantronix com To assist in diagnosing the problem please have the following information available when you call Your name and your company s name address and phone number Product name Lantronix serial number Prom version Network configuration Description of the problem Product status when th...

Page 34: ...Appendix B 28 LTR T Installation Guide ...

Page 35: ...erchantability or fitness for a particular purpose other than those specifically set out above or by any existing contract between the parties Any such contract states the entire obligation of Lantronix The contents of this document shall not become part of or modify any prior or existing agreement commitment or relationship The information recommendation description and safety notations in this o...

Page 36: ... EMC EN 50022 1988 class A EN 55082 1 1992 IEC 801 2 1991 prEN55024 2 1992 4kVCD 8kVAD IEC 801 3 1992 prEN55024 3 1991 3V m IEC 801 4 1988 prEN55024 4 1992 0 5kV Signal Lines 1kV Power Lines Supplementary Information The product complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC Manufacturer s Contact Director of Quality Assurance Lantronix 15353...

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