National Instruments 636 Series User Manual

© National Instruments | 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 632x/6341/6343 -10 V to 10 V 320 μV
-5 V to 5 V 160 μV
-1 V to 1 V 32 μV
-200 mV to 200 mV 6.4 μV
NI 6345/6351/6353/6355/
6361/6363/6365/6375
-10 V to 10 V 320 μV
-5 V to 5 V 160 μV
-2 V to 2 V 64 μV
-1 V to 1 V 32 μV
-500 mV to 500 mV 16 μV
-200 mV to 200 mV 6.4 μV
-100 mV to 100 mV 3.2 μV

National Instruments 636 Series Specifications

General

Brand	National Instruments
Model	636 Series
Category	Data Loggers
Language	English