20MHZ DDS Function Generator. Very limited use; looks and functions as new: -DDS technology, dual-channel output -125MSa/s sample rate, 14bit vertical resolution. -5 types of standard output waveform -46 arbitrary waveforms(include DC) -Modulation: AM, FM, PM, FSK, ASK, PWM, linear/log sweep, burst -Outputs: waveform, Synchronous signal, Internal Trigger -Inputs: Ext modulation source, 10MHz clock, ext trigger -Channel duplication function -Built-in frequency counter 0.1Hz- 200MHz (single channel) -Standard interfaces: USB Device, USB Host -Remote control support