Repeaters, extending networks
A repeater reshapes and reamplifies your data, filtering out any noise or interference on the line. Although the same placement restrictions apply to repeaters as they do for boosters, you can send your data farther with a repeater if you use fiber repeaters. However, because repeaters perform more functions than boosters, they are more expensive.
A booster amplifies your data signal, so the signal can be sent across a data line. A booster costs less than a repeater but doesn?t provide the distances a repeater can. And boosters transmit not only your data signal but also any noise or interference on your lineand that means you may not get a clear and complete transmission at the receiving end. To get the maximum distance allowed by a booster, you must place it in the middle of your data line. If you need to transmit between two separate buildings, it may be difficult logistically to use a booster and get the distance you need.
At first glance, boosters and repeaters perform basically the same functiontransmitting signals across your data line. However, each device has its place within your existing network, depending on what you need to accomplish and what distances you need to cover.
Consider how much distance you need to cover, how strong you need your transmission signal to be, and how much money you want to spend before choosing a booster or a repeater. If you?re not sure exactly what you need, give our FREE Tech Support experts a call, and they?ll help you determine which device best suits your application.
By adding repeaters, you get longer distances- each 'refreshed' signal can drive another 4,000 feet of cable- and 31 more RS-485 loads (driver/receiver pairs) per repeater.
Long networks are especially vulnerable to grounding and surge problems. This is easily
addressed by isolating the nodes. Use optically isolated repeaters and isolated converters to attach the nodes of your network and you'll have reliable long-distance applications.