DEVICE FOR MEASURING STATISTICAL ERROR OF MEASURING DEVICES Russian patent published in 1994 - IPC

FIELD: measurement technology. SUBSTANCE: device has zero and squares subtracting units 3 and 23, zero inverse converter 5, the first and the second squarers 19 and 24, squares adder 16, analog-to-digital converter 2, which has measuring input connected with input of calibrated unit 1, level subtracting unit 4, level inverse converter 6, scale mark set-point device 7, zero and level comparing units 8 and 9, OR gate 10, pulse generator 11, switches 12, 13, delay lines 14, 15, zero and level adders 17 and 18, counters 20, 21, AND gate 22, math expectation subtracting unit 25. Error of calibrated device 1 is selected in the device and math expectation and dispersion for random signal are determined. EFFECT: widened area of application. 1 dwg