HDS ViewStation System Administrator's Guide

A Hypertext Document


ViewStation Token Ring Hardware Interface

This page describes the ViewStation's hardware interface for Token Ring networks. The Token Ring interface card has a PCMCIA connector and a separate keyed connector for the adapter cable. The adapter cable uses either Type 1 or Type 3 connectors (an adapter is provided for the RJ45 connector).

The HDS ViewStation PCMCIA interface has two slots, an internal and an external. The ViewStation uses "tr1" to designate the token ring interface to the PCMCIA internal slot and "tr2" to designate the PCMCIA external slot.

Token Ring communications can use either shielded twisted pair connectors (called Type 1 cabling) or unshielded twisted pair connectors (called Type 3 cabling). This choice is determined by your installed network wiring. Cable adapters for each type are supplied with the Adapter card.

Network cable quality often determines whether 4 or 16 Mb ring speed is appropriate for the Token Ring network. Token Ring speed on the ViewStation is jumper selectable for either 4 Mbps or 16 Mbps. This is controlled by jumpers on the JP9 block for the ViewStation and on the JP11 block on the ViewStation Ultra. Jumper pins 5-6 select the ring speed for the internal PCMCIA slot and jumper pins 7-8 select the ring speed for the external PCMCIA slot. Ring speed 4 Mbps is selected when the jumper is in place, and ring speed 16 Mbps is selected when the jumper is off. This configuration should be selected with the initial ViewStation order so the correct configuration is installed, tested, and shipped.

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