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Specifications
Analog Input
1
Includes the effects of the BNC-2140 with a 1 m SHC68-C68-A1 analog cable
© National Instruments Corporation
This appendix lists the specifications of the BNC-2140 accessory. All
specifications are typical at 25° C unless otherwise noted. All specifications
are relative to measurement standards and require a 15 minute warm-up
period. Specifications do not include transducer error.
Voltage Input
Number of channels ............................... 4
Maximum input voltage
(Signal + common mode voltage).......... Each input should remain within
Inputs affected........................................ ACH0, ACH1, ACH2, ACH3
Input coupling ........................................ DC
1
Input capacitance
DIFF mode
Current excitation on ............... 85 pF
Current excitation off............... 75 pF
SE mode
Current excitation on ............... 150 pF
Current excitation off............... 145 pF
Current Excitation
Level....................................................... 4 mA
Accuracy ................................................ ±1.31%
±42.4 V (30 V
input or of AIGND
A-1
A
) of any other
rms
BNC-2140 User Manual
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