SC75A37B

The SC75A37B is designed as one kind of 4 switch cable clone which simulates the effect of coaxial cable in serial digital systems. In serial digital applications it is known that a signal adhering to the amplitude specification of 800mV+10% will maintain its integrity if the attenuation at the nyquist frequency is 30dB or less. It may then be reconstituted correctly by, say, the sony deserialiser.

SC75A37B has seven features. (1)Emulates cable up to 360MHz. (2)Quick and easy to use. (3)Simulates more than 300 metres. (4)No ower needed. (5)Fixed and switched programmable. (6)Pocket size. (7)Known accurate loss for repeatable performance. Those are all the main features.

The CABLE CLONE SC75A37B has similar attenuation vs frequency characteristics to coax cable over the wide frequency spectrum of the serial digital signal. When installing or testing serial digital equipment it is often necessary to establish the maximum length of cable over which the signal will remain useable, or to ensure there is sufficient margin (headroom) if a certain length of cable is required. Most adaptive equalisers, in deserialisers for example, rely on the attenuation characteristics of the cable to operate correctly.

At present the only way to do this is to insert the actual length of cable into the path. This is time consuming, inconvenient and costly. The Faraday CABLE CLONE is the solution to the problem. The CABLE CLONE emulates the loss and group delay frequency characteristics of a cable to approximately 360 MHz. It is supplied in a small metal box fitted with BNC connectors which needs no power supply. It my be carried in the pocket and is always ready for immediate use. By using the table on the reverse of the SC75A37B box the user can relate the loss to lengths of various types of cable. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!