Octo Analog Modulator NTSC M-N for CATV

Adaptation of collective facilities to continue using analog televisions

The digital signal is captured by a group of Set-Top-Boxes installed in a headend. Each STB selects a specific service that will transmit it to the octomodulator. In this specific application there are up to 32 services available (1 for each STB).

Each octomodulator has up to a maximum of 8 A/V inputs where the STBs will be connected, so a total of 4 octomodulators is necessary in this application. Each of these devices will modulate the signals obtained at its inputs, so that an analog channels stream is generated at the output. The output analog signal will be transmitted to an Avant X programmable amplifier.

The Avant X offers the advantage of optimizing amplification and processing to analog signals, resulting in better signal quality. In addition, a CATV channelling will be applied to these signals at the output, providing the advantage of being able to mix them with signals from a CATV headend.

The installation of this device also allows the channels to be reorganized adjacently and on demand, which will simplify and facilitate the process of ordering services later on the televisions.

Finally, with this application it is possible a considerably reduction of the infrastructure required for this type of installation, being necessary only a single rack with the STBs, the octomodulators and the Avant X amplifier.