convert D.C. to high frequency A.C.
rectify high frequency A.C. to D.C.
convert D.C. to low frequency A.C.
produce dual-polarity D.C. voltages for the input to the demodulator.
sine wave
impulse signal
sample signal
none of these
voltage
frequency
wave form
amplitude
TTL out jack
VCO input jack
function selector
output jack
square waveform
triangular waveform
sinusoidal waveform
saw tooth waveform