By Ron Hranac – The decibel plays a major role in the world of test and measurement. Simply put, the decibel — abbreviated dB — is used to express the ratio of two power levels. That’s it. The following is a more formal definition, included in two of SCTE’s operational practices
Read MoreBy Ron Hranac – The coaxial cable portion of our networks has long been designed and built to have a nominal impedance of 75 ohms. The word “nominal” is used to describe the impedance, because it’s pretty much impossible for the impedance to be exactly 75 ohms, especially across a wide frequency range.
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By Ron Hranac – Have you ever wondered why we have standards and specifications? Among other things, standards and specs support interoperability, define various interfaces and constants, and help to ensure that things work more or less as they were intended.
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