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Appendix A Specifications
SCXI-1141/1142/1143 User Manual A-4 ni.com
Stability
DC gain temperature coefficient.............20 ppm/°C
Input offset drift...................................... µV/°C typ
µV/°C max
AC gain temperature coefficient.............280 ppm/°C
Digital Input/Output
EXT CLK pin input voltage
with respect to DIG GND.......................5.5 V max
–0.5 V min
Absolute maximum voltage input
rating with respect to DIG GND.............–0.5 to 5.5 V
Digital input referenced to DIG GND
V
IH
, input logic high voltage...........2 V min
V
IL
, input logic low voltage.............0.8 V max
Digital output referenced to DIG GND
V
OH
, output logic high voltage........3.7 V min at 4 mA
V
OL
, output logic low voltage .........0.4 V max at 4 mA
20
32
Gain
------------+
⎝⎠
⎛⎞
60
100
Gain
------------+
⎝⎠
⎛⎞