Bit - A contraction of the term binary digit. A bit can be either 0 or 1 and is the smallest possible unit of information in digital code. Used for the monitoring and diagnosis of serial communications such as RS-232. Cable Tester - A handheld electronic device that is used to measure the electrical and physical properties of network cabling. Used commonly to certify cabling to known standards, or as a troubleshooting tool.
Crosstalk interferes with the desired data signal.
Handheld cable testers can be used to determine the level of unwanted crosstalk in network cabling. Data compression is used to increase the information carrying capacity when bandwidth is not sufficient. A logarithmic unit of measure for the power or strength of a signal expressed as the ratio of two values. A 3 dB increase in signal strength is twice the original signal. A 3 dB decrease is half the original signal.