User manual NETGEAR GS508T Reference Manual

[. . . ] If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: · Reorient or relocate the receiving antenna. · Connect the equipment into an outlet on a circuit different from that which the receiver is connected. · Consult the dealer or an experienced radio/TV technician for help. EN 55 022 Declaration of Conformance This is to certify that the NETGEAR Model GS508T Copper Gigabit Switch is shielded against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article 4a. Conformity is declared by the application of EN 55 022 Class A (CISPR 22). [. . . ] Operating Environment Requirements Characteristic Temperature Requirements Ambient temperature between 0 and 40ºC (32 and 104ºF). No nearby heat sources such as direct sunlight, warm air exhausts, or heaters. At least 6 ft (1. 83 m) to nearest source of electromagnetic noise (such as photocopy machine or arc welder). Adequate power source within 6 ft (1. 83 m). Operating humidity Ventilation Operating conditions Power Installing the Switch on a Flat Surface To install the switch on a flat surface, be sure to attach the rubber footpads to the bottom of the switch. installation 4-1 Installing the Switch in a Rack Refer to Figure 4-1 when installing the switch in a rack. 100/1000 Mbps Copper Gigabit Switch Power Ethern et MODEL GS50 4T 9378FB Figure 4-1. Half- or full-duplex setting on the switch and the connected device are not the same. One or more devices are not properly connected, or cabling does not meet Ethernet guidelines. Make sure the remote link partner is set to auto negotiate. Verify that the cabling is correct. Be sure all cable connectors are securely positioned in the required ports. Equipment may have been accidentally disconnected. FDX/COL LED is blinking yellow excessively. Some collisions are normal when the connection is operating in half-duplex mode. Recheck the link partner settings. troubleshooting 5-1 APPENDIX A: TECHNICAL SPECIFICATIONS This appendix provides technical specifications for the NETGEAR Model GS508T Copper Gigabit Switch. Network Protocol and Standards Compatibility IEEE 802. 3ab 1000BASE-T IEEE 802. 3u 100BASE-TX IEEE 802. 3i 10BASE-T IEEE 802. 3x flow control Data Rate 1000 Mbps with PAM5 encoding Performance Specifications Frame filter rate: Frame forward rate: Network latency (using 64-byte packets): Address database size: Addressing: Queue buffer: 1, 480, 000 frames/second maximum 1, 480, 000 frames/second maximum 30 microseconds maximum 8, 000 MAC addresses 48-bit MAC address 0. 5 MB memory per port Interface 1000BASE-T Gigabit Ethernet RJ-45 connector technical specifications A-1 Power Consumption 60 W Input Voltage (Power Adapter) 100­240 V AC Physical Specifications Dimensions: Weight: 13. 0 x 1. 7 x 8. 0 in. ; 33. 0 x 4. 3 x 20. 7 cm 5. 3 lb; 2. 3 kg Environmental Specifications Operating temperature: Operating humidity: 0 to 40º C (32 to 104º F) 90% maximum relative humidity, noncondensing Electromagnetic Compliance CE mark, commercial FCC Part 15 Class A VCCI Class A EN 55022 (CISPR 22) Class A, EN50082-1 C-Tick Safety Agency Approvals UL Listed (UL 1950), cUL TUV Licensed (EN 60 950), IEC 95 technical specifications A-2 APPENDIX B: CONNECTOR PIN ASSIGNMENTS This appendix provides information about the RJ-45 plug and the RJ-45 connector used for the NETGEAR Model GS508T Copper Gigabit Switch. RJ-45 Plug and RJ-45 Connector It is important that all 1000 BASE-T certified Category 5 or Category 5e cabling use RJ-45 plugs. The RJ-45 plug accepts 4-pair UTP or shielded twisted pair (STP) 100 ohm cable and connects into the RJ-45 connector. The RJ-45 connector is used to connect stations, hubs, and switches through UTP cable; it supports 10 Mbps, 100 Mbps, or 1000 Mbps data transmission. The RJ-45 plug and RJ-45 connector are both illustrated in Figure B-1. 12345678 8 1 Key: 1 to 8 = pin numbers Figure B-1. RJ-45 Plug and RJ-45 Connector with Built-in LEDs connector pin assignments B-1 Table B-1 lists the pin assignments for the 10/100/1000Mbps RJ-45 plug and the RJ-45 connector. 10/100/1000 Mbps RJ-45 Plug and RJ-45 Connector Pin Assignments Pin 1 2 3 6 4 5 7 8 Channel A B C D Description Rx/Tx Data + Rx/Tx Data Rx/Tx Data + Rx/Tx Data Rx/Tx Data + Rx/Tx Data Rx/Tx Data + Rx/Tx Data - connector pin assignments B-2 APPENDIX C: CABLING GUIDELINES This appendix provides specifications for cables used with the NETGEAR Model GS508T Copper Gigabit Switch. Using 1000BASE-T Gigabit Ethernet over Category 5 Cable Overview When using the new 1000BASE-T standard, the limitations of cable installations and the steps necessary to ensure optimum performance must be considered. The most important components in your cabling system are patch panel connections, twists of the pairs at connector transition points, the jacket around the twisted pair cable, bundling of multiple pairs on horizontal runs and punch down blocks. All of these will affect the performance of 1000BASE-T technology if not correctly implemented. The following sections are designed to act as a guide to correct cabling for 1000BASE-T. Cabling The 1000BASE-T product is designed to operate over Category 5 cabling, but to further enhance the operation, the cabling standards have been amended. The latest standard is Category 5e, which defines a higher level of link performance than is available with Category 5 cable. If installing new cable, we recommend using Category 5e cable, since it costs the same as Category 5 cable and will increase performance. If using the existing cable, be sure to have the cable plant tested by a professional who can verify that it meets or exceeds either ANSI/EIA/TIA-568-A:1995 or ISO/IEC 11801:1995 Category 5 specifications. Length The maximum distance limitation between two pieces of equipment is 100 m, as per the original Ethernet specification. The end to end link is called the "channel. " TSB-67 defines the "Basic Link" which is the portion of the link that is part of the building infrastructure. This excludes patch and equipment cords. The maximum basic link length is 295 feet (90 m). cabling guidelines C-1 Return Loss Return loss measures the amount of reflected signal energy resulting from impedance changes in the cabling link. The nature of 1000BASE-T renders this measurement very important; if too much energy is reflected back on to the receiver, the device will not perform optimally. [. . . ] Computers and workstation adapter cards are usually media-dependent interface ports, called MDI or uplink ports. Most repeaters and switch ports are configured as media-dependent interfaces with built-in crossover ports, called MDI-X or normal ports. Figure C-1 illustrates straight-through twisted pair cable. 1 Tx 2 1 Rx 2 A 3 Rx 6 6 3 Tx B Key: A = Uplink or MDI port (as on a PC) B = Normal or MDI-X port (as on a hub or switch) 1, 2, 3, 6 = Pin numbers 736EA Figure C-1. Straight-Through Twisted Pair Cable Figure C-2 illustrates crossover twisted pair cable. 1 Rx 2 1 Rx 2 B 3 Tx 6 3 Tx 6 B Key: B = Normal or MDI-X port (as on a hub or switch) 1, 2, 3, 6 = Pin numbers 737EA Figure C-2. Crossover Twisted Pair Cable cabling guidelines C-5 Patch Panels and Cables If you are using patch panels, make sure that they meet the 100BASE-TX requirements. [. . . ]