Full featured, menu driven direct digital synthesis (DDS) generator. Waveform changes can be made manually or via RS-232 interface. 20MHz range (sine only / square up to 5MHz) Internal AM, FM, PSK, FSK modulation Sweep range 0.1Hz to 20MHz DDS with Arbitrary Waveform, full featured, menu driven direct digital synthesis (DDS) generator. Waveform changes can be made manually or via RS-232 interface. 20MHz range (sine only / square up to 5MHz). Internal AM, FM, PSK, FSK modulation. Sweep range 0.1Hz to 20MHzFeatures:Full featured, menu driven direct digital synthesis (DDS) generator. Waveform changes can be made manually or via RS-232 interface.20MHz range (sine only / square up to 5MHz)Internal AM, FM, PSK, FSK modulationSweep range 0.1Hz to 20MHzFunction waveformSine, Square, Triangle, Positive Ramp, Negative Ramp, random noise, Sin(x)/x, Index up, Index down.WaveformMemory length 8K (8192) pointsVertical resolution 8 bitsSample rate 10Msa/sOff line protect memory four 8k waveformsFrequency charactersSine 1mHz~fmaxSquare 1mHz~5MHzOthers 1mHz~10kHzMaximum resolution 100uHz or 8 digitLong term stability 50ppm (0°C~40°C)Short term stability 1ppm (after power on and stable)Accuracy:0.05Hz (>100Hz)100uHz(