P6 line resistance measurement menu:
Ok key:
Short press:
record reference
value long
press: nc
m key:
Short
press: cut
screen
long press:
nc
The pressure drop method only needs two steps to measure the internal
resistance of the wire (requires constant current load)
1: Charger +u2+ constant current load: short press 1a left and right to
record the reference value, flash it
2: The string receiving test data line can measure the current
drop through the data line, and then automatically calculate the
internal resistance of the data line.
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