Analog inputs – National Instruments Module SCXI-1125 User Manual
Page 74
Appendix
A Specifications
© National Instruments Corporation
A-5
Analog Inputs
Number of input channels ...................... 8 differential
Input range ............................................. ± 2.5 mVDC to ±5 VDC
Input coupling ........................................ DC (or AC with SCXI-1305 or
TBX-1329)
Input impedance
Normal powered on ........................ >1 G || 100 pF in parallel
Powered off/overload...................... 4.5 M
With SCXI-1327 ............................. 1 M
With TBX-1316 .............................. 40 M
Input bias current ................................... ±100 pA typical, ±1 nA max
Filter type ............................................... 3-pole Butterworth filter response
Bandwidth (–3dB cut-off frequency)
4 Hz filter ........................................ 4 Hz ±5%
10 kHz filter .................................... 10 kHz ±5%
Full power bandwidth .............. 7 kHz ±5%
With SCXI-1327 or
SCXI-1313A high-voltage
terminal blocks ........................ 2.6 kHz ±5%
With TBX-1316 high-voltage
terminal block .......................... 500 Hz ±5%
Slew rate
Typical.............................................0.15 V/
μs
Minimum.........................................0.1 V/
μs
Scan interval accuracy
±0.012%..........................................3
μs
±0.006%.........................................10
μs
±0.0015%........................................20
μs
Common Mode Rejection Ratio, 50/60 Hz (CMRR)
4 Hz filter enabled........................... 160 dB
10kHz filter enabled........................ 98 dB