National Instruments SCXI-1121 Manuel D’Utilisation
© National Instruments Corporation
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A
Specifications
This appendix lists the specifications for the SCXI-1121. These are
typical at 25 °C unless otherwise stated. The operating temperature range
is 0 to 50 °C.
typical at 25 °C unless otherwise stated. The operating temperature range
is 0 to 50 °C.
Analog Input
Gain (jumper-selectable)........................ 1, 2, 5, 10, 20, 50, 100, 200, 500,
1,000, 2,000
Output range........................................... ±5 V
Number of channels ............................... 4
Gain accuracy
1
...................................... 0.15% of full scale
Offset voltage
Input ................................................ ±6 µV
Output ............................................. ±3 mV
Output ............................................. ±3 mV
Stability versus ambient temperature
Input offset drift .............................. ±0.2 µV/°C
Output offset drift ........................... ±200 µV/°C
Gain drift......................................... 20 ppm/°C
Output offset drift ........................... ±200 µV/°C
Gain drift......................................... 20 ppm/°C
Input bias current .................................. ±80 pA
Input resistance
Normal ............................................ 1 G
Ω
Power off......................................... 50 k
Ω
Overload.......................................... 50 k
Ω
Output resistance
Multiplexed-Output mode............... 100
Ω
Parallel-Output mode ...................... 330
Ω
1
Includes the combined effects of gain, offset, and hysteresis and nonlinearity