digital signal

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digital signal

(1) An electronic signal transmitted as binary code that can be either the presence or absence of current, high and low voltages or short pulses at a particular frequency.

(2) A common classification for digital circuits established by the telephone companies, such as DS0, DS1, etc. See DS.
References in periodicals archive ?
High-precision 48-bit data processing is vital to keeping digital signals clean.
The S8401 transmitter incorporates an on-chip PLL which synthesizes the high-speed clock from a low-speed reference, while the S8501 on-chip PLL synchronizes directly to incoming digital signals, simultaneously re-timing and regenerating the digital signal steam.
The PAC encoder converts AM or FM radio signals into high quality digital signals.
Digital signals eliminate variability in quality between products and temperature levels, providing users with consistently superior image quality.
The pact, signed by the Federal Communications Commission and Mexico's Secretariat of Communications and Transportation, clears the way for KABC (Channel 7), KNBC (Channel 4) and KTLA (Channel 5) to begin broadcasting digital signals in November along with 21 other stations in top 10 markets around the country.
New digital TVs and converter boxes that allow current TVs to receive digital signals may hit store shelves by next spring.
Then the demodulator converts the analog signals to digital signals and reduces the signals to baseband signals with central frequency at 10MHz, which are absolutely digital signals here, the MPEG decoder converts these digital signals to analog signals, the analog signals here are still interlaced scanning signals which will become progressive scanning signals after the interpolation algorithm of back-end image processing.
The Agilent MSO is the only tool capable of correlating analog phenomena with digital signals inside the FPGA.
PBS, a longtime leader in digital content and technology, Cox Communications, one of the largest cable television operators in the nation, and the Association of Public Television Stations (APTS), a membership organization that represents public television stations across the country, have entered into an agreement in principle that allows for the digital signals of public television stations in Cox markets to be carried on Cox's local digital cable service.
It is capable of switching digital signals ranging from 65 Mbps to 3.
To meet these expectations, and to earn the lucrative revenue digital services promise, operators must proactively manage their analog and digital signals and respond immediately to trouble, regardless of its origin.
Intersil applies analog, mixed-signal and radio frequency (RF) expertise to products that enable wireless access to broadband media; provide reliable power management for PCs, files servers and portable information appliances; and convert analog and digital signals in cellular and Internet infrastructure.

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