Measurement-computing USB-1208FS Manuel d'utilisateur télécharger pdf (Page 21)

USB-1208FS User's Guide Specifications

Table 2. Accuracy, differential mode

Range Accuracy (LSB)

±20 V 5.1

±10 V 6.1

±5 V 8.1

±4 V 9.1

±2.5 V 12.1

±2 V 14.1

±1.25 V 20.1

±1 V 24.1

Table 3. Accuracy, single-ended mode

Range Accuracy (LSB)

±10 V 4.0

Table 4. Accuracy components, differential mode - All values are (±)

Range % of Reading Gain Error at full scale (FS)

(millivolts (mV))

Offset (mV) Accuracy at FS (mV)

±20 V 0.2 40 9.766 49.766

±10 V 0.2 20 9.766 29.766

±5 V 0.2 10 9.766 19.766

±4 V 0.2 8 9.766 17.766

±2.5 V 0.2 5 9.766 14.766

±2 V 0.2 4 9.766 13.766

±1.25 V 0.2 2.5 9.766 12.266

±1 V 0.2 2 9.766 11.766

Table 5. Accuracy components, single-ended mode - All values are (±)

Range % of Reading Gain Error at FS (mV) Offset (mV) Accuracy at FS (mV)

±10 V 0.2 20 19.531 39.531

Table 6. Noise performance, differential mode

Range Typical counts Least significant bit

root mean square

(LSB

rms)

±20 V 2 0.30

±10 V 2 0.30

±5 V 3 0.45

±4 V 3 0.45

±2.5 V 4 0.61

±2 V 5 0.76

±1.25 V 7 1.06

±1 V 8 1.21

Table 7. Noise performance, single-ended mode

Range Typical Counts LSB

rms

±10 V 2 0.30

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 27 28 29

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Measurement-computing USB-1208FS Manuel d'utilisateur Page 21

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