HW and SW review about vna HOT 1 OPEN

(1) i've noticed this issue after the first batch, and the current plan is to switch to a bulkhead sma connector that is screwed to the enclosure for later units (the full two port version already has this implemented); for the current units a workaround is to stuff some double sided tape between the board and enclosure cover plate so that it fits tightly. 3dB sounds high though; in my tests I've only seen up to 0.5dB of changes; i'd try with another cable and see if it improves. Thanks for bringing this up.
(2) the software is still under development and i'm working to implement those features asap
(3) i've added a todo for this one
(4) that is possible but might require updates to the firmware, since currently the device only sends values after the integrate-and-dump unit; i'm going to add a register that allows you to switch to raw adc data output, and add some facilities in libxavna to support this.

Thanks

from vna.