Advantech iDAQ-900 Series User Manual page 34

Low Conversion Rate ADC Analog Input Module
For iDAQ modules measuring slow varying signals such as temperature, strain, or
pressure, the conversion rate of the ADC is usually accordingly slow. To prevent the
sample rate from being limited to a low value due to this characteristic when synchro-
nizing low conversion rate ADC analog input modules with other types of iDAQ mod-
ules, the sample rate of the module and conversion rate of the ADC are
independently set.
If the sample rate is higher than the conversion rate, multiple samples from the same
conversion result are provided. This is shown in Figure 3.13.
Figure 3.13 Acquisition of a low conversion rate ADC analog input module
iDAQ-900 User Manual 24