XT2640OperatingManual 13July2016 Page167of187
28.2.2 VOLTAGE MEASUREMENT ACCURACY
ThechartsbelowshowguaranteedmaximumvoltageerrorsforDC,MAINS,AVIONICS,and50kHzthroughouta1Vto1000Vrange
ofappliedvoltagesexpressedas%ofreadingandarevalidwithin±5Cofthecalibrationtemperature(add0.005%perCbeyond
this)andwherenosignificantcommon‐modeispresent.Followingthechartsisatablewhichcanbeusedtocalculatethe
guaranteedaccuraciesforapplicationsotherthanshowninthechartsandalsoforthecomputationofnumericalerrors.
0.01%
0.10%
1.00%
1 10 100 1,000
DCVoltageAccuracy
LChannel
SChannel
AChannel
WChannel
0.01%
0.10%
1.00%
1 10 100 1,000
MAINSVoltageAccuracy
LChannel
SChannel
AChannel
WChannel
0.01%
0.10%
1.00%
1 10 100 1,000
AVIONICSVoltageAccuracy
LChannel
SChannel
AChannel
WChannel
0.1%
1.0%
10.0%
1 10 100 1,000
50kHzVoltageAccuracy
LChannel
SChannel
AChannel
WChannel