Installation

LE180A

Switches

The LE180A has a 3-position DIP switch. See Figure 6. Two of the switches provide options for enabling and disabling the SQE test and LINK test functions. Both test functions are Ethernet and 10Base-T standards.

SW1	SW2
SW1	SW3
	3-Position Switch

Front

Figure 6: LE180A Three-Position Switch

The following describes the switch settings:

SW1 = SQE test: UP is enabled/DOWN is disabled

SW2 = Link test: UP is enabled/DOWN is disabled

SW3 = Duplex: UP is half/DOWN is full

SQE test

The transceiver is shipped from the factory with the SQE test switch enabled. SQE (Signal Quality Error) is the IEEE term for collisions. Depending on the Ethernet device attached to the AUI connector, set the SW “1” to the DOWN position to disable the SQE test function or to the "UP" position to enable the test.

The SQE Test (heartbeat) is a means of detecting a transceiver’s inability to detect collisions. Without this test, it would not be possible to determine if the collision detector is operating properly. The SQE test starts by generating a test signal on the collision pair from the transceiver (or its equivalent) following every transmission on the network. It does not generate any signals on the common medium.

Additionally, IEEE 802.3 specifications state that IEEE 802.3 compliant repeaters must not be attached to transceivers that generate the heartbeat.

Link test

For UTP port connection, the LE180A implements the link integrity test functions as specified in the IEEE 802.3 10Based-T standard. The LE180A will transmit link test pulses to any UTP port after that port’s transmitter is inactive for a range of 8 to 17 ms. These pulses are sent to confirm that a valid connection exists between the LE180A and its attached device.

LE180A

Installation -- Continued

Connecting to a Device AUI port

The LE180A can connect to any Ethernet device with an AUI port. To connect to a device with an AUI port, an AUI cable or direct connection is required. See Figure 7.

AUI Cable Length 50 Feet Maximum

AUI

Black Box

Transceiver

Figure 7: LE180A Connected to an AUI Device Port

Connecting to an RJ-45 device jack

IMPORTANT: If the transceiver is attached to an Ethernet repeater, a10Base-T hub, or a wiring concentrator, the SQE test function should be disabled.

To connect the transceiver to a 10Base-T device via RJ-45 jacks, see Figure 8 and do the following:

1.Select an appropriate length UTP cable for the connection.

2.Connect one end of the UTP cable to the RJ-45 OUT jack of the transceiver.

3.Route the free end of the UTP cable to the area where the10Base-T device is located.

4.Connect the free end of the UTP cable to an RJ-45 IN jack on the 10Base-T device.

Hub

RJ-45 Plug
		AUI Cable
		AUI Cable
UTP Cable	Black Box
UTP Cable	Transceiver
	Transceiver

10Base-T Port

Figure 8: LE180A Connected to a RJ-45 Device Jack

Black Box Network Services, 724-746-550, www.blackbox.com

LE180A, 10Base-T Transceiver Stand-Alone model specifications

The Black Box LE180A is a stand-alone 10Base-T transceiver that embodies a blend of robust technology and essential networking features. Ideal for users seeking a reliable means of communication in a local area network (LAN), this model provides a seamless connection to Ethernet networks, ensuring efficiency and effectiveness in data transfer.

One of the standout features of the LE180A is its compliance with the IEEE 802.3 standard for 10Base-T technology, which allows for data transmission speeds of up to 10 Mbps. This speed is well-suited for small to medium-sized networks where high-speed access is necessary but not critical. The transceiver is versatile and can easily accommodate different networking needs, making it an excellent choice for businesses and individual users alike.

Another significant characteristic of the Black Box LE180A is its user-friendly design, which simplifies installation and operation. The device is equipped with a straightforward LED status indicator that provides users with real-time feedback on network activity, making it easy to monitor connectivity status at a glance.

The LE180A supports twisted pair cabling using standard RJ-45 connectors, providing an effective means of establishing connections with other network devices. Its ability to work over a maximum distance of 100 meters ensures that it can support a variety of network topologies, optimizing the layout of office spaces and enhancing the reach of network devices.

Additionally, the Black Box LE180A transceiver is designed with longevity and durability in mind. Its robust construction not only protects it from environmental damage but also ensures stable performance in various conditions. This reliability is crucial for maintaining consistent network operations, thus minimizing downtime and productivity losses.

The transceiver also features an auto-sensing capability, enabling it to detect the optimal connection speed automatically when interfacing with different network devices. This adaptability ensures that performance is maximized, regardless of varying network conditions.

In conclusion, the Black Box LE180A stands out as a reliable, efficient, and user-friendly 10Base-T transceiver. Its key features, including compliance with networking standards, ease of use, and robust construction, make it a valuable addition to any LAN setup. For anyone in need of a dependable networking solution, the LE180A is a commendable choice that combines functionality with performance.