Chapter 1: Product Overview 1-11
100Base-T is wired identically to 10Base-T, except that the twisted pair cable must be Category 5 and the hubs must permit 100 or 10/100 Mbps operation. Although 10Base-T will operate on Category 3 twisted pair, or NCR “747” cable, an upgrade to Category 5 is required for 100Base-T.
A customer desiring to use the terminal in an existing 10Base-T environment can do so and simply run at 10 MB. In order to upgrade to 100Mbps, Category 5 cable and 100 or 10/100 hubs must be installed. NCR strongly recommends the use of Category 5 for all new cabling, even if the customer initially intends to run only 10Base-T.
LED Indicators for Link Integrity (verifies cable and hub connection are good) and LAN speed is provided on the Processor Board near the row of connectors at the bottom of the e-box. The LED is ON (yellow) when the speed is running at 100 Mbps.
Link Integrity is provided to the PC chipset to permit boot-up software to verify the presence of the LAN connection. Software must provide 2 seconds after power-up in order for the Link Integrity signal to become valid.
Wireless LAN Communications
Where a wired Ethernet connection is not desired a wireless LAN adapter may be installed in the PCMCIA socket. This requires that the PCMCIA daughter-card feature be installed. A wireless LAN used in the terminal must meet the following requirements:
•Integrated antenna that meets the requirements of PCMCIA (PC Card) Extended Type 2 card definition (a maximum of 5-cm additional length).
•Power consumption within the capabilities of the PCMCIA daughter-card.
•Signaling requirements within the capabilities of the terminal PCMCIA interface. The main restriction is that DMA transactions are not supported over the PCMCIA interface.
•Device drivers for the targeted operating system must exist.
