PROMAX Manuals

The MO-270 is a DTMB modulator compliant with China’s national standard specification for digital terrestrial broadcasting GB20600-2006. The input to the modulator is an MPEG-2 Transport Stream (TS) in SPI or ASI formats. The output from the unit is a TDS-OFDM modulated DTMB signal upconverted to IF or RF. The modulator has been designed to achieve the maximum performance yet at an affordable price. The digital coding and modulation process is implemented with programmable logic devices using PROMAX proprietary IP. This makes the design highly flexible, allowing to tailor it to any particular application.

The document introduces the test functions of MO-170 DVB-T modulator, including signal level alignment and in-band noise measurement, test transport stream, high MER COFDM signal power measurement, getting the correct BER

The PJ5800/A series are highly precise, low ground current and fixed output voltage regulators manufactured using CMOS process. The series provides large currents with a significantly small dropout voltage. The PJ5800/A consists of a current limiting circuit, a thermal limiting, a precision reference voltage and an error amplifier provide maximal protection against any fault conditions. Output voltage ranges are adjustable, 1.5V, 1.8V, 2.5V, 3.3V; TO-252 (1W), SOT-89 (500mW) and SOT-223 (800mW) packages are available.