Measurement-computing USB-2416 Manuel d'utilisateur télécharger pdf (Page 15)

USB-2416 User's Guide Functional Details

Figure 9 below shows a typical thermocouple connection.

Figure 9. Differential thermocouple connection example

Noise filtering, data rate, and throughput rate

Although the USB-2416 A/D converter has a maximum data rate of 3,750 S/s, the actual throughput rate you

observe for voltage and temperature data is determined by these formulas.

 Maximum single-channel throughput:

ratedata

640

 Maximum multiple-channel throughput:

∑













μs640

ratedata

where n is the number of channels

See Table 18 and Table 19 in the Specifications chapter for details.

This drop-off in throughput rate is due to the USB-2416's noise filtering feature. You can control the amount of

the noise filtering by adjusting the data rate setting. By reducing the data rate, the averaging of samples

increases, and noise drops correspondingly.

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