Description
Product details:
LAM Research 810-002895-102 Lonworks Valve Control Node PCB
Key words: 810-002895-102
Net weight (Kg) : 1.26Kg
Condition: 100% original
Warranty: 1 year
Packaging: 100% original
Delivery time: TNT, DHL, FEDEX, EMS, UPS
Time of payment: Telegraphic transfer
Delivery time: 3-5 days
LAM Research 810-002895-102 Lonworks Valve Control Node PCB. Because all communication signals are transmitted over the shared line, even if the message is intended for only one terminal (destination), it is broadcast to all computers on the line. In normal situations, network interface cards filter messages that are not sent to them and send interruption requests to cpus when receiving messages with their own target address, unless the network adapter is in Promiscuous mode. This “one talks, one listens” quality is a security weakness of shared-media Ethernet, because a node on the Ethernet can choose whether to listen to all the information being transmitted over the line. Shared cables also mean shared bandwidth, so Ethernet speeds can be very slow under certain conditions, such as when all network terminals are restarted after a power failure.
LAM Research 810-002895-102 Lonworks Valve Control Node PCB. Because of signal attenuation and delay, there are distance limits according to different dielectric Ethernet segments. For example, a 10BASE5 coaxial cable has a maximum distance of 500 meters (1,640 feet). The maximum distance can be achieved through Ethernet Repeaters, which amplify the signal in the cable and transmit it to the next section. A repeater can connect to a maximum of five network segments, but only four devices can be connected to one network segment. This mitigates problems caused by cable breakage: When one section of coaxial cable is disconnected, all devices on that section cannot communicate, and Repeaters keep the rest of the network working properly.
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