DE-805TP 5-Port Ethernet Micro-Hub User’s Guide Rev. 04 (Aug., 1997) 6DE-805-TP..
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• • Reorient or relocate the receiving antenna. Increase the separation between the equipment and the receiver. Connect the equipment into an outlet on a circuit • different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV • technician for help. Shielded interface cables must be used in order to comply with emission limits. Changes or modifications not expressly approved by user’s authority to operate this equipment.
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Installation Attaching the Hub Stand A stabilizing stand has been provided with the hub. It functions as a “foot” to provide a stable installation on a desktop or other flat surface. Connecting Power Use an AC power adapter (optionally available from your dealer). The AC power adapter provides a stable source of power for the hub.
with the DE-805TP hub. Consult this list if you need to place an order. Caution: If you are going to supply your own AC power adapter, carefully read the input power specification of the DE-805TP hub. No fuse is provided to protect the hub from high input voltage or sudden power surges. Using the wrong AC power adapter may cause irreparable damage to the hub. Connecting Twisted-Pair Segments Each of the hub’s five twisted-pair ports can be used to connect a station or other device.
The twisted-pair cable extended from a twisted-pair port is called a “twisted-pair segment,” and it can be up to 100 meters long. Note: To connect port 5 to a computer or other non-hub device, make sure that you set the switch on the bottom of the hub to the “Normal” position.
Connecting Hubs Together Connecting (cascading) hubs together allows you to increase the number of ports available to the network. All stations attached to the cascaded hubs communicate with each other on the same network. 1. Use port 5 to connect the hubs together. Set this port to the “Uplink” position using the switch on the bottom of the hub. 2. Use a straight-through twisted-pair cable, connect one end to one hub in the “Uplink” position. Connect the other end to a hub in the “Normal” position.
cascaded hubs MAY NOT exceed four unless a bridge is used.
Diagnostic LEDs • Power If this LED is off, check to be certain you are using the correct AC power adapter or if the adapter you are using is damaged. (Note: if the other LEDs are functioning, then it is possible that the Power LED is bad and nothing is actually wrong.) • Collision Excessive blinking of this LED indicates that the traffic on the network is heavy. Since there are only five ports on the DE-805TP, this situation generally only occurs if multiple hubs are cascaded together.
Connector Pinouts 7
List of AC Power Adapters for Use with the DE-805TP Hub Model AD-0950 AD-0950B AD-0950D AD-0704J Description 9V DC, 120 VAC American standard UL/CSA approved AC power adapter 9V DC, 220 VAC German standard VDE approved AC power adapter 9V DC, 240 VAC U.K. plug BSI approved AC power adapter 7.5 DC, 100VAC Japanese standard T-mark approved AC power adapter Technical Specifications • • • • • • • • • • • • • Standards: IEEE 802.
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