User`s manual

ACCURACY – ANALOG INPUTS
330 kHz sampling rate, single channel operation and a 60-minute warm-up: Accuracies are listed for
operational temperatures within ±2°C of internal calibration temperature. Calibrator test source high side
tied to Channel 0 High and low side tied to Channel 0 Low. Low-level ground is tied to Channel 0 Low at
the user connector.
Table 3 – Absolute Accuracy – Analog Inputs
±0.76±2.5 LSB0V to +1.250V
±1.53±2.5 LSB0V to +2.500V
±3.05±2.5 LSB0V to +5.000V
±6.10±2.5 LSB0V to +10.000V
±1.53±2.5 LSB±1.250V
±3.05±2.5 LSB±2.500V
±6.10±2.5 LSB±5.000V
±12.2±2.5 LSB±10.000V
Absolute Accuracy (mV)Absolute Accuracy (LSB)Range
Table 4 - Accuracy Components (errors in LSBs)
±1.5 max±0.75 max±1.0 max±1.0 max0 to +1.250V
±1.5 max±0.75 max±1.0 max±1.0 max0 to +2.500V
±1.5 max±0.75 max±1.0 max±1.0 max0 to +5.000V
±1.5 max±0.75 max±1.0 max±1.0 max0 to +10.00V
±1.5 max±0.75 max±1.0 max±1.0 max±1.250V
±1.5 max±0.75 max±1.0 max±1.0 max±2.500V
±1.5 max±0.75 max±1.0 max±1.0 max±5.000V
±1.5 max±0.75 max±1.0 max±1.0 max±10.00V
LIEDLEOffset ErrorGain ErrorRange
Each PCI-DAS1602/12 is tested at the factory to assure the board’s overall error does not exceed accuracy
limits described in Table 3 above.
As shown in Table 4, total board error is a combination of Gain, Offset, Differential Linearity and Integral
Linearity error. The theoretical worst-case error of the board can be calculated by summing these compo-
nent errors. Worst case errors are realized only in the unlikely event that each of the component errors are
at their maximum level, and causing error in the same direction.
Table 5. Analog Input Specs
60 minutesWarm-up time
±35V power on or offAbsolute maximum input voltage
200 nA maxInput leakage current
10 MegOhm minInput impedance
−70 dB typ
CMRR @ 60Hz
±10V Common Mode Range
12 bitsNo missing codes guaranteed
±6 ppm/°CADC Zero drift
±6 ppm/°CADC Full-Scale Gain drift
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