When Steve shows the impedance range of the Bode 100, please note that he was using minimum output level of -30dBm. When you can use the maximum output level of +13dBm, the signal/noise ratio will improve significantly and you can measure even further.
Please note also that we recommend using the User-Range calibration whenever you reach the limits of the device or when you want to compensate e.g. a DC-blocker. User-Range calibration does not require interpolation and therefore is less prone to errors.
Thanks for the tips, Florian!
In the earlier classes we showed the impact of source level on SNR. For low power circuits, like the voltage reference on the VRTS3 demo board, even -30dBm is too large. In that case we have to sacrifice the SNR.
THE calibration tip is a good one and we showed that also in the earlier classes. Just be sure, if you use the User Calibration to recalibrate if you change the frequency span or number of measurement points