High-Frequency Modulation/Demodulation
DT340 Fully Digital Power Line Carrier adopts fully digital one-pass modulation/demodulation technique. The modulation mode is enhanced OQPSK, which enables the modulated signals to have very strong anti-disturbance capability. The modulation, demodulation and control functions are integrated into a 200-thousand-gate CPLD chip, whose very high integration ensures that the high frequency channel of DT340 has favorable performance.

• CPLD: Complex Programmable Logic Device
• OQPSK: Offset Quadri-Phase Shift Keying, which is an advanced efficient narrowband digital modulation mode, and the enhanced
• OQPSK can eliminate ISI (Inter Symbol Interference) and phase jitter.