Black Box General Description, Co! nnectors and Cables, LE180A Dimensions, LE180A Features

LE180A

General Description

The LE180A IEEE802.3 compliant Ethernet transceiver uses 10Mbps Ethernet CSMA/CD protocol to provide a connection interface to 10Base-T Ethernet unshielded twisted-pair (UTP) cables. The transceiver connects to the AUI connector of an Ethernet device via standard AUI cable.

Figure 2: shows the front and rear panels of the LE180A transceiver.

	4 LEDs
Rear	Front
	3-Position
	Switch

AUI Connector RJ-45 Connector

Figure 2: LE180A Transceiver Front and Rear Panels

Dimensions

Figure 3 shows the LE180A dimensions.

	0.812"
3.141

1.757"

Figure 3: LE180A Dimensions

LE180A

LE180A Features

•Provides a complete interface of the AUI to Ethernet UTP cable.

•Supports 10Mbps data transfer rates.

•Supports Carrier Sense Multiple Access/Collision Detection (CSMA/CD) contention protocol.

•Drives UTP cable segments up to 100 meters (328ft).

•Supports selectable link and SQE test functions.

•Supports direct connections to host AUI ports.

•Detects and corrects reverse polarity on the receiving pair of UTP cables.

•Provides four LEDs: Transmit (TX), Receive (RX), Collision, and Status.

Co! nnectors and Cables

L!E180A AUI male connector

AUI D-sub 15-pin male connector accommodates AUI drop cables (50 meters max.). The AUI connector is used to connect the transceiver to the AUI port of an Ethernet device such as an Ethernet MAC controller, a repeater, or a hub via an AUI drop cable. The AUI connector is shown in Figure 4. The AUI male connector pin assignments are show in Table 1.

D-Sub 15-pin Male AUI Connector

18

915

Figure 4: LE180A AUI Male Connector Pin Assignments

2 Black Box Network Services, 724-746-550, www.blackbox.com Black Box Network Services, 724-746-550, www.blackbox.com 3