Waveform: sinusoidal, triangle, square
Operating voltage: 12-15V
Frequency: 10 Hz - 450 khz
pcb: 55 x 38 mm
Jumper P2: waveform selection
Jumper P3: Frequency selection
10Hz-450Hz
90Hz-1.5kHz
940Hz-15khz
6kHz-120kHz
20kHz-450kHz
R11: frequency adjustment
R12: square wave duty ratio
R13: Sinusoidal wave linearity adjustment
R14: amplitude adjustment
R15 Square wave linearity adjustment