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Section 5 - Specifications
Network Standard: IEEE 802.3u Ethernet 100Base-TX Class II Repeater
Transfer rate: 100 Mbps
Topology: Tree/Star
Access Method: CSMA/CD, 100 Mbps
Media: Catagory 5, 2 pair, UTP or STP
Max. cable length: 328 ft. (100 meters)
Ports: 8 RJ-45 jacks
Crossover connector: 1 (port 8)
Auto-partition: Yes
Dimensions: 10.75” x 6.54” x 1.69”
Certification: FCC Part 15 Class A
Temperature: 0° C to 40° C (operating)
Humidity: 5% to 95% (operating, non-condensing)
Power: 100-240VAC, 0.4 Amp max., 50/60 Hz
Section 6 - 100 Base-TX Cable Requirements
100Base-TX networks use unshielded or shielded twisted-pair cable and 8-pin RJ-
45 modular connectors. Use 22-26 AWG, 2- or 4-pair, 100 ohm/ft, solid conductor
Category 5 cable. Maximum cable length from hub to workstation is 328' (100 m).
Figure 3 Hub’s RJ-45 Pin Assignments
Schematics for both straight and crossover twisted-pair cable are shown below.
Straight-Through Crossover
(Hub) (Adapter) (Hub) (Hub)
1 IRD+ 1 OTD+ 1 IRD+ 1 IRD+
2 IRD- 2 OTD- 2 IRD- 2 IRD-
3 OTD+ 3 IRD+ 3 OTD+ 3 OTD+
6 OTD- 6 IRD- 6 OTD- 6 OTD-
Note:
A crossover cable is only necessary if you are connecting two hubs which
do not have a daisy-chain port available.
Pin
Assignment
(MDI-X Port 1 - 8)
Assignment
(MDI Daisy-Chain Port)
1 Input Receive Data + Output Transmit Data +
2 Input Receive Data - Output Transmit Data -
3 Output Transmit Data + Input Receive Data +
6 Output Transmit Data - Input Receive Data -
4,5,7,8 Not Used Not Used
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