I'm using the PicoScope 4262.
When applying a 2 Volt DC Signal in scope mode I see a correct horizontal line at about 2 Volts.
But in Spectrum Mode (0 to 100Hz , linear,blackman, N=2048) at about zero Hz a peak with approx 4 Volts is measured.
Why is the Amplitude in spectrum mode two times higher than in scope mode?
Applying a 1kHz sinewave with 1Volt amplitude from the picoscope AWG generator to Port A:
- In scope mode a Sinewave with 1 Volt Amplitude can be seen.
- In spectrum mode (0 to 2000Hz , linear,blackman) at about 1 kHz a peak with approx 0.7 Volts is measured.
Why is the Amplitude in spectrum mode lower than in scope mode?