© National Instruments Corporation
A-1
SCXI-1120 User Manual
Appendix A
Specifications
This appendix lists the specifications for the SCXI-1120. These are 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
8
Gain accuracy
0.15% of full scale
Offset voltage
Input
±
6
µ
V
Output
±
3 mV
Stability versus ambient temperature
Input offset drift
±
0.2
µ
V/
°
C
Output offset drift
±
200
µ
V/
°
C
Gain drift
20 ppm/
°
C
Input bias current
±
80 pA
Input resistance
Normal
40 M
Ω
Power off
50 k
Ω
Overload
50 k
Ω
Output resistance
Multiplexed-Output mode
100
Ω
Parallel-Output mode
330
Ω
Filtering (jumper selectable)
4 Hz (-10 dB) or 10 kHz (-3 dB), 3-pole RC
Output selection time
(with 5 V step, all gains)
0.012% accuracy
1
5.2
µ
sec typical, 7
µ
sec maximum
0.006% accuracy
2
10
µ
sec
0.0015% accuracy
2
20
µ
sec
1
Includes the combined effects of the SCXI-1120 and the AT-MIO-16F-5
2
Includes the combined effects of the SCXI-1120 and the AT-MIO-16X
