Measurement-computing PCI-DAS6013 Bedienungsanleitung PDF herunterladen (Seite 32)

PCI-DAS6013 and PCI-DAS6014 User's Guide Specifications

Table 2. Absolute accuracy components specifications - All values are (±)

Range

% of

Reading

Offset

(µV)

Averaged Noise +

Quantization (µV)

Temp Drift

(%/DegC)

Absolute

Accuracy at FS

(mV)

±10 V

0.070

1800

180

0.001

8.984

±5 V

0.020

918

0.001

2.003

±500 mV

0.070

109

0.001

0.471

±50 mV

0.070

0.001

0.069

Averaged measurements assume averaging of 100 single-channel readings.

Each PCI-DAS6013 and PCI-DAS6014 is tested at the factory to assure the board’s overall error does not

exceed accuracy limits described in Table 1.

Table 3. Differential non-linearity specifications

All ranges

±0.5 LSB ty,p ±1.0 LSB max

No missing codes

16 bits, guaranteed

System throughput

Condition

Calibration Coefficients

ADC Rate (max)

1. Single channel, single input range

Per specified range

200 kS/s

2. Multiple channel, single input range

Per specified range

200 kS/s

3. Single channel, multiple input ranges

Default to value for cbAInScan() range parameter

200 kS/s

Note 2: For conditions 1-2 above, specified accuracy is maintained at rated throughput. Condition 3

applies a calibration coefficient which corresponds to the range value selected in cbAInScan().

This coefficient remains unchanged throughout the scan. Increased settling times may occur

during gain-switching operations.

Settling time

Settling time is defined as the time required for a channel to settle to within a specified accuracy in response to

a full-scale (FS) step. Two channels are scanned at the specified rate. A –FS DC signal is presented to

channel 1; a +FS DC signal is presented to channel 0.

Condition

Range

Accuracy

±0.0031%

(±2.0 LSB)

±0.0062%

(±4.0 LSB)

Same range to same range

±10 V

5 µs typ

±5 V

5 µs max

±500 mV

5 µs typ

±50 mV

5 µs typ

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