I have a R&S APN 62 signal generator (1 Hz - 260 kHz) displaying a strange behavior-- it generates distorted wave shapes at "high" frequencies. At low frequencies all the wave shapes are ok but starting from a few decades of kHz sawtooth and triangular signals are more and more distorted. Less so the sine wave. Take a look to the oscilloscope display:
Any idea on the possible causes? As it is a frequency-dependent malfunction it may be due to some degraded component (condensers?).
Marco