Some TV tuner cards also function as video capture tuner cards and save the TV programs on the hard drive. If you have a satellite TV service, install a satellite TV software to avail this facility on your personal computer. The TV tuner software renders an interface for the PC that provides all the features of a normal television and also allows you to change the channels using a remote. In order to watch TV on PC, a suitable TV tuner software has to be installed on the PC. The analog-to-digital converter, as the name suggests, converts the analog signal to the digital signal. This quad tuner card allows you to watch and record up to 4 over-the-air (OTA) digital terrestrial/ Clear QAM HD TV channels at the same time. The demodulator separates and extracts the relevant signals from the carrier signal. X692 is a quad tuner PCIe card for receiving ATSC and Clear QAM cable TV on PC. The receiver receives the signal from the external source and transfers it to the demodulator. The tuner tunes the receiver to the correct frequency for receiving TV signals. The tuner card is an assembly of tuner, receiver, demodulator and an analogue-to-digital converter. This external source can be an antenna, a cable or satellite receiver box. An external source of TV signal has to be essentially plugged in the TV tuner card so that it can receive the TV signals. A TV tuner card enables the computer to capture the TV signals.
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