test_enveloppe

Testing the specs of the In / out for the analog processing board

Test of the analog processing board

Data sampled at 10Msps on the PRUDAQ on both channels.

Code

See the Jupyter notebook In-Out.ipynb

Data is saved here. It's 32Mb of sampling at 10 Msps.

Part of the data is the signal going in the board, the second part is what comes out of the probe.

Remarks :

• Raw data differs a little bit of shown data: the input signal is biaised to fit into the PRUDAQ [0,2V] range, and the SigOut data does not reach the full gain to fill the 3.3V of the output - to stay within a "safe" range for the acquisition board.
• One will note that the prudaq connectors are stray wires, and the board presents a significant noise on the SigOut channel.

Signal in / signal out

The signal sent in is 50mVpp, the carier is at 2MHz. Linear decrease from t0 to the end.

Details at the enveloppe level

The period of the signal is 2 MHz. The first peak has 1 period, the second 2, height is half of the first peak, and the 3rd has 3 periods, height 1/4th of the first peak.