National Instruments DAQCard-1200 - Manual (Page 63)

Chapter 4 Theory of Operation
DAQCard-1200 User Manual 4-10 © National Instruments Corporation
For multiple-channel data acquisition, observing the data acquisition rates
in Table 4-2 ensures 12-bit accuracy.
The recommended data acquisition rates in Table 4-2 assume that voltage
levels on all the channels included in the scan sequence are within range for
the given gain and are driven by low-impedance sources.
Note If you use external conversions for single-channel acquisitions, the maximum
sampling rate is 90 kS/s.
Table 4-1. Analog Input Settling Time Versus Gain
Gain Setting Settling Time Recommended
1, 2, 5, 10 10
µ
s max
20 12
µ
s typ, 15
µ
s max
50 25
µ
s typ, 30
µ
s max
100 60
µ
s typ, 80
µ
s max
Table 4-2. DAQCard-1200 Maximum Recommended Data Acquisition Rates
Acquisition Mode Gain Setting
Sampling
Rate
Single channel 1, 2, 5, 10, 20, 50, 100 100.0 kS/s
Multiple channel 1, 2, 5, 10 100 kS/s
20 83.3 kS/s
50 40.0 kS/s
100 16.6 kS/s