Industrial Communications Handbook August 2016

CBi Telecom provides structured cabling designs and solutions that not only conform to high-performance cabling standards but affords customers flexibility in planning for present and future data applications

(military), their combination is often troublesome. Since the 2,45 GHz band, in particular, is extremely noisy and busy, each additional transmitter simply increases the ‘noise floor’, thus making it more dif- ficult for yet another transmitter to successfully gain access. Hence data throughput rates drop, and an- noyingly, that temperature transducer sometimes works, and sometimes doesn’t … It is extremely important to note that the network- ing systems we have were designed for different pur- poses, and we ought not to use them for things they were not designed for. Of course, that is a red flag to a bull …Therefore many systems are inappropriately used. Bluetooth was not designed for video stream- ing. Internet protocol was not designed for low la- tency communications. Remember that in the 1980s, Ethernet was all con- nected to the same network segment, and essentially all communication occurred by talking to everyone on that bus. When the jabber got too much, one put a bridge in, and separated the network into two smaller sub-networks, so that only communication that had to go over the bridge to the other side did so, freeing up each side of the bridge to allow more local communication speed. Eventually, when costs plummeted, switches ar- rived, allowing each segment to be quite small, with only a few machines on a common bus. These days, it would be odd to have more than one machine on its own segment, with ALL communication effective- ly switched over a very fast backbone, such that few collisions occur. Wireless takes us Forward, slap bang into 1980 all over again. Unswitched hubs is all the atmosphere offers, (OK, there are a FEW non overlapping chan- nels). In ordinary Telecomms, when bandwidth be- comes an issue, lay another cable, it is a tad more difficult to lay another electromagnetic spectrum.

CBi Telecom offers a comprehensive range of optical fibre and optical fibre cable solutions for future high bandwidth telecommunications infrastructure needs

CBi Telecom offers a comprehensive copper and fibre cable product range, for applications in the process control, telemetry and data collations segments of the market, that can meet the most diverse market

and stringent environmental demands

Your link to the world of communication

CBI ELECTRIC: TELECOM CABLES (PTY) LTD Tel. +27 (0)12 381 1400 • Fax. +27 (0)12 250 3412 www.cbitele.com

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industrial communications handbook 2016