amc VIBRO AV ACQUISITION 4001 Manual do utilizador - Página 5

Procurar online ou descarregar pdf Manual do utilizador para Unidade de controlo amc VIBRO AV ACQUISITION 4001. amc VIBRO AV ACQUISITION 4001 11 páginas. 4-channel data acquisition module with gain

Imprimir página

4. Measurement accuracy

Total measurement accuracy is affected by 3 types of errors:

Offset

Gain

Non-linearity

The main source of errors of the unit is the error related to offset and gain. The non-linearity error is

negligibly small and may be overlooked. The device is equipped with a 16-bit ADC converter, which

transforms analog signals into values ranging from 0 to 65525. The following is an ideal characteristic

for a ±10 V range.

The offset error is measured in the mid-point of the measurement range. In an ideal case, an input signal

of 0V should cause the converter to return the value of 32768. Any other result means an offset error.

For the ± 10 V range, the maximum offset is ± 1.66 mV.