Method and device of DTU/FTU measured voltage value accuracy remote judgement

The invention discloses a method and device of DTU/FTU measured voltage value accuracy remote judgement. The method of DTU/FTU measured voltage value accuracy remote judgement includes the steps thatactual voltage values of all DTU/FTUs on a circuit are collected through a major network; an arbitrary DTU/FTU is selected to serve as a reference datum point, and the voltage value of the reference datum point is externally measured and collected to serve as reference voltage; a standard voltage drop between a DTU/FTU point and the reference datum point is calculated, a standard voltage value ofthe DTU/FTU point is calculated according to the standard voltage drop, and deviation between the actual voltage value and the standard voltage value of the DTU/FTU point is calculated. According to the method of DTU/FTU measured voltage value accuracy remote judgement, the DTU/FTU accuracy is reflected through the deviation between the actual voltage value and the standard voltage value of the DTU/FTU point; by remotely c