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Regarding the calibrator output, I have been aware of an artifact. Because I have been doing some measurements (related to the new Fault Finding page, I also decided to catch the artifact now):

This is the calibrator at 30 MHz. Every approx. 250 or 400 ?s, the artifact appears.

The calibrator output also has a steep negative slope but a rounded positive slope (HW 0.4.5.1):

The level is okay, fft midscale dBm reference = -55 dBm, and 10 dBm/div. Hence level is -35 dBm - okay.

=== RF input ===

The RF input also has artifacts:

It has been verified that the generator is switched off, but it seems that the RF spectrum analysis operation is not affected. Disclaimer: I'm talking about my defective tinySA with defect LNA and quite sure also defective input switch, but it is hard to believe that this sort of artifact would occur just because of this.

Rob

Rob,

How do you determine these artifacts are an issue?

--

Designer of the tinySA
For more info go to

You're right, Erik, that these artifacts are not necessarily an issue if it does not affect proper operation. Regarding the apparent output interference of the RF input: that's at least something that wonders me.

Rob

Let me know if you see an artifact coming from the input that impacts measurement performance?

--

Designer of the tinySA
For more info go to