Measurement-computing USB-1208HS-4AO Manuel d'utilisateur télécharger pdf (Page 17)

USB-1208HS-4AO User's Guide Specifications

Table 2. Calibrated absolute accuracy

Range Accuracy (mV)

±20 V (DIFF mode) ±9.55 typ, ±13.18 max

±10 V (DIFF mode) ±4.59 typ, ±6.23 max

±5 V (DIFF mode) ±2.25 typ, ±2.75 max

±10 V (SE mode) ±5.10 typ, ±8.06 max

±5 V (SE mode) ±2.63 typ, ±4.03 max

±2.5 V (SE mode) ±1.59 typ, ±2.70 max

0 – 10 V (SE mode) ±3.29 typ, ±5.13 max

Table 3 summarizes the noise performance for the USB-1208HS-4AO. Noise distribution is determined by

gathering 50 kS with inputs tied to ground at the user connector. Samples are gathered at the maximum

specified sample rate of 1 MS/s.

Table 3. Noise performance

Range Typical counts LSBrms

±20 V (DIFF mode) 3 0.45

±10 V (DIFF mode) 3 0.45

±5 V (DIFF mode) 3 0.45

±10 V (SE mode) 5 0.91

±5 V (SE mode) 5 0.91

±2.5 V (SE mode) 5 0.91

0 – 10 V (SE mode) 5 0.91

Table 4. Input settling time in µs, typical

Condition Range ±1 LSB ±4 LSB ±8 LSB

+ full-scale to –full-scale

channel switch, same range

to same range

±10 V 1.5 1.1 1.0

±5 V 2.1 1.1 1.0

±2.5 V 2.2 1.1 1.0

0 V to 10 V 2.6 1.1 1.0

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Measurement-computing USB-1208HS-4AO Manuel d'utilisateur Page 17