Keithley KUSB-3100, User Manual

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Appendix A
88
Table 3 lists the specifications for the A/D subsystem of the
KUSB-3100 module.
Table 3: A/D Subsystem Specifications
Feature KUSB-3100 Specifications
Number of analog input
channels
8 single-ended
Number of gains 4 (1, 2, 4, 8)
Resolution 12-bit
Data encoding twos complement
System accuracy, to % of FSR
Gain = 1:
Gain = 2:
Gain = 4:
Gain = 8:
0.04%
0.06%
0.08%
0.15%
Input Range
Gain = 1:
Gain = 2:
Gain = 4:
Gain = 8:
±10 V,
±5 V,
±2.5 V,
±1.25 V
Nonlinearity 0.05%
Differential nonlinearity ±1/2 LSB
Inherent quantizing error 1 LSB
Drift
Zero:
Gain:
Differential linearity:
±100
μ
V
±100 ppm
monotonic
Input impedance
a
Off channel:
On channel:
10 M
Ω,
10 pf
10 M
Ω,
100 pf