Hi Seppy,
I have finally summarized the errors / gaps of the latest manual, 9th July, see doc file.
During these investigations, I found a malfunction of the DC burden voltage item.
When I initially toggled to bd.on in any DC A range, the burden voltage display wouldn't appear, even not on the mobile via BT.
Only after I once engaged bd.on in AC A mode, it directly functioned there, and afterwards, also in DC A mode, permanently.
Seems to be a missing initialization flag in the 1-22 firmware.
Frank
PS: I'm still investigating on the spurious instability of the 5M and 50M ranges..