B&K Precision 4003A Sweep Function Generator, 5 Digit Red LED, 0.5 Hz to 4 MHz Frequency Range Generates Sine, Triangle & Square waveforms from 0.5 Hz to 4 MHz 20 Vpp output into open circuit (10 Vpp into 50) Voltage Control Generator (VCG) input Variable amplitude output plus 20 dB attenuator 100% DC offset