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PCI-DAS64/M2/16 User's Guide Specifications
System throughput
Table 2. System throughput specifications
Condition Calibration coefficients Max ADC
rate
1. Single channel, single input range.
Per specified range 2.0 MS/s
2. Multiple-channel, single-input range: ±5 V,
±2.5 V, ±1.25 V, 0 to 5 V, 0 to 2.5 V
Per specified range 1.5 MS/s
3. Multiple channel, single input range: ±0.625 V, 0
to 1.25 V
Per specified range 750 kS/s
4. Single channel, multiple input ranges.
Default to value for cbAInScan() range
500 kS/s
5. Multiple channels, multiple ranges. All samples in
unipolar or bipolar bode.
Default to value for cbAInScan() range
500 kS/s
6. Multiple channels, multiple ranges. All samples in
unipolar and/or bipolar bode.
Default to value for cbAInScan() range
500 kS/s
7. Multiple-channel, switching unipolar/bipolar
mode, single-input range.
Default to value for cbAInScan() range
750 kS/s
Note 1: For conditions 1-3, specified accuracy is maintained at rated throughput. Conditions 4-7 apply
calibration coefficients which correspond to the range value selected in
cbAInScan(). These
coefficients remain unchanged throughout the scan. Errors of up to 25 counts may be incurred
when switching gains while in bipolar or unipolar mode only (conditions 4 and 5). Errors of up to
500 counts may be incurred when mixing unipolar/bipolar modes (conditions 6 and 7).
Accuracy
A 100 kS/s sampling rate, single-channel operation and a 60-minute warm-up. Accuracies are listed for
operational temperatures within ±2ºC of internal calibration temperature. Calibrator test source high side tied to
channel 0 and low side tied to low-level ground at the user connector
Table 3. Analog input — absolute accuracy specifications
Table 3
Range Absolute accuracy
±5.000 V ±6.0 LSB
±2.500 V ±8.0 LSB
±1.250 V ±8.0 LSB
±0.625 V ±10.0 LSB
0 V to +5.000 V ±8.0 LSB
0 V to +2.500 V ±11.0 LSB
0 V to +1.250 V ±13.0 LSB
Table 4. Analog input — typical accuracy specifications
Range Typical accuracy
±5.000 V ±5.5 LSB
±2.500 V ±7.5 LSB
±1.250 V ±7.5 LSB
±0.625 V ±9.5 LSB
0 V to +5.000 V ±7.5 LSB
0 V to +2.500 V ±10.5 LSB
0 V to +1.250 V ±12.5 LSB
Each PCI-DAS64/M2/16 is tested at the factory to assure the board’s overall error does not exceed accuracy
limits shown in .
6-5