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The time required for each A/D conversion is controlled by the sampling
rate level. The minimum sampling rate of PCIe/PXIe- 6301 is 0.275 S/s,
and the maximum sampling rate is 800 S/s. The actual maximum
sampling rate can be set according to the set rate grade and the number
of channels added by each ADC for:
𝑀𝑎𝑥 𝑆𝑎𝑚𝑝𝑙𝑒 𝑅𝑎𝑡𝑒 =
Max Total Sample Rate
max (number of channels on any one ADC)
Where:
⚫
𝑀𝑎𝑥 𝑆𝑎𝑚𝑝𝑙𝑒 𝑅𝑎𝑡𝑒
: The maximum sample rate that can be set
⚫
max (number of channels on any one ADC)
: Maximum number of
channels added on a single A DC.
⚫
Max Total Sample Rate
: The maximum total sampling rate at the current
rate level, as shown in Table 15.
Table 15 ADC Timing Modes and maximum aggregate sampling rate
When the user sets the timing mode to Auto, the driver internally reverses
the current actual total sample rate according to the following formula:
𝑇𝑜𝑡𝑎𝑙 𝑆𝑎𝑚𝑝𝑙𝑒 𝑅𝑎𝑡𝑒
= max(number of channels on any one ADC) ∗ 𝑆𝑎𝑚𝑝𝑙𝑒 𝑅𝑎𝑡𝑒
Where:
⚫
𝑇𝑜𝑡𝑎𝑙 𝑆𝑎𝑚𝑝𝑙𝑒 𝑅𝑎𝑡𝑒
: Current actual total sampling rate
ADC Timing Modes
Maximum total sampling rate
Level 0
2.2 S/s
Level 1
5.0 S/s
Level 2
25.0 S/s
Level 3
40.0 S/s
Level 4
400.0 S/s
Level 5
800.0 S/s
