National Instruments PCIe-6323, User Manual

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4-3
X Series User Manual
Table 4-1 shows the input ranges and resolutions supported by each MIO X Series device.
Working Voltage Range
On most MIO X Series devices, the PGIA operates normally by amplifying signals of interest
while rejecting common-mode signals under the following three conditions:
• The common-mode voltage (V cm), which is equivalent to subtracting AI <0.. x > GND
from AI <0.. x >-, must be less than ±10 V. This Vcm is a constant for all range selections.
• The signal voltage (Vs), which is equivalent to subtracting AI <0.. x >+ from AI <0.. x >-,
must be less than or equal to the range selection of the given channel. If Vs is greater than
the range selected, the signal clips and information are lost.
• The total working voltage of the positive input, which is equivalent to (Vcm + Vs), or
subtracting AI GND from AI <0..
x >+, must be less than ±11 V.
If any of these conditions are exceeded, the input voltage is clamped until the fault condition is
removed.
Table 4-1. MIO X Series Device Input Range and Nominal Resolution
MIO X Series Device Input Range
Nominal Resolution
Assuming 5% Over Range
NI 632 x /6341/6343 -10 V to 10 V 320
μ
V
-5 V to 5 V 160
μ
V
-1 V to 1 V 32
μ
V
-200 mV to 200 mV 6.4
μ
V
NI 6345/6351/6353/6355/
6361/6363/6365/6375
-10 V to 10 V 320
μ
V
-5 V to 5 V 160
μ
V
-2 V to 2 V 64
μ
V
-1 V to 1 V 32
μ
V
-500 mV to 500 mV 16
μ
V
-200 mV to 200 mV 6.4
μ
V
-100 mV to 100 mV 3.2
μ
V