Kramer Electronics equipment for Fiber Optic lines of TV signal transmission

Along with conventional single mode lines of optical signal transmission which feature high price there are also multi mode fibers allowing sufficiently decrease the costs at relatively short signal transmission distance. Comparatively large core’s diameter in the multi mode fiber pretty simplifies its manufacturing and, of course, decreases the cost. Although for this cable type the hard signal attenuation is usual but in a case of short distance transmission it is not critical and the independence from complex electromagnetic noise lets guarantee the stability of parameters on the fiber’s input/output. Just since that the Fiber Optic signal transmission lines based on multi mode operation often are preferable than the signal transmission systems based in twisted pair. And the use if multi mode operation in Fiber Optic line allows decreasing expenses in tens of times. For the case of using single Fiber Optic line the system for transmission video and audio signal will consist of five components:

• Video and audio signals multiplexer allowing combination all types of signals into single one;
• Fiber Optic transmitter converting the signal from multiplexer to optical one for transmission over the Fiber Optic line;
• Optical fiber conducting light beam from transmitter to receiver;
• Fiber Optic receiver converting optical signal to electrical one;
• De-multiplexer of video and audio signals converting one common signal to video and audio (stereo) signals.

Kramer 611 T and Kramer 611 R

Such equipment manufactured by pretty large number of companies. One of them is Kramer Electronics which produces devices initially designed for broadcast quality audio and video signals transmission.

In particular, the product range includes transmitter Kramer 611 T and receiver Kramer 611 R. The working distance of 611 T/611 R pair is 5 km (multi mode operation). Power supply (12v) provided.

Material provided by Ovako Company