Please, you would have ((Service Manual)), or the Location of the Pots goes FORWARD scale adjustment.
In my Unit DAIWA DIGITAL POWER METER MODEL DP-830.
___________Compared to a Bird 43 this measuring minus 10 ~15%.
I Disassembly my Unit and I found 6 Pots,
all: RV1 - RV2 - RV3 - RV4 - RV5 - RV6 and One Pot is name (TC)
How to identify FORWARD or REFLECTED ? is all RV ?
Reminding that DP-830 doesn't measure Reflect Power, just FORWARD and SWR
Otto Moreira - PU2OML - Sao Paulo - Brazil - South America
Lat : -20º49'19'' S
Long: -49º31' 1'' W
Grid Square ou Grid Locator (GG59Fe)