Thor part number H-VQAM-SD is a basic real time hardware encoder combined with a digital TV channel modulator. This product was developed to reduce the cost of distributing basic video services over coax cable as a standard digital TV program. The system is built around a fast and reliable MPEG-2 encoder based on a high speed FPGA processor. Video inputs are first digitized by an ADC circuit, then encoded to MPEG-2 Format by the processor. The MPEG-2 transport stream is then modulated onto an RF carrier by a frequency agile modulator circuit. All standard digital TV frequencies from 35-960 MHz are supported, with all world QAM modulation standards.