Issue of spectrum - line spectrum does not appear

Hello

In this VI (see below) staircase SIN (0, 1 Hz) overlaps with the frequency of "parasite" (SIN, 200 Hz).

I don't know if I'm correctly using personnel of the spectrum, but 200 Hz does not appear on the graph of the spectrum.

Sampling frequency is 8192Hz, 200 Hz point must appear at 200/8192... that is 0.025 (where the Blue Cross is placed).

But there is nothing.

Where is a problem.

Thank you

Pavel.

Solved...

'Building the waveform' block on must set interval between datapoints. In my case, it's late (i.e. 1 DC) loop

When this block is placed on the BD, the entry 'dt' is hidden, so drag the top edge to see the other topics ( t0 and dt)

Tags: NI Software

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