2.1
Analog inputs
Number and type of inputs:
8x S.E.
(PCA-8428, PCA-8429)
16x S.E.
(PCA-8438, PCA-8439)
A/D converter resolution:
14 bits
Basic input range:
±10 V
Programmable gain:
1x, 2x, 4x, 8x, 16x, 32x
(ie. ranges ±10 V, ±5 V, ±2.5 V, … , ±0.3125 V)
Measuring error:
±0.10 % max.
(range ±10 V)
(see note below)
±0.12 % max.
(ranges ±5 V, ±2.5 V, ±1.25 V)
±0.15 % max.
(ranges ±0.625 V, ±0.3125 V)
Input impedance:
>10 MOhm
Maximum input voltage:
±24 V
(permanently)
ESD protection:
TVS diode 26 V
(230 W @ 8/20 μs)
Isolation voltage:
1000 V
DC
(standard version of the card)
600 V
DC
(card with ESD-X1 option)
Note:
The measuring error is related to the range (not to the measured value) and after
full setling. Calibration constants are stored in the on-board EEPROM separately for
each measuring range to compensate for offset and gain.
Achieving the error defined above requires periodical adjustment/calibration.
Note:
ESD-X1 option includes Surge Arrester (protection of the isolation barrier).
2.2
Analog outputs
Number of outputs:
2
D/A converters resolution:
12 bits
Output ranges:
±10 V with software max./min. limiting thresholds
Output voltage error:
±0.15 % max.
(see note below)
Settling time:
5 μs typ.
Output impedance:
<1 Ohm
Load impedance:
>2 kOhm
(see note below)
Isolation voltage:
both analog outputs are isolated together with the
analog inputs, see previous paragraph
Note:
The output voltage error is related to the range (not to the output value) and after
full signal setling. Calibration constants are stored in the on-board EEPROM
separately for each channel to compensate for offset and gain.
Achieving the error defined above requires periodical adjustment/calibration.
Note:
The output can be loaded with a current of up to 5 mA (ie. 10 V with a load of 2
kOhm), but the current consumption of all outputs is limited to 20 mA in total.
The outputs are short-circuit resistant to AGND.
2.
Specifications
PCA-8428, PCA-8429, PCA-8438, PCA-8439
User Guide
rev. 12.2015
I - 2
Summary of Contents for PCA-8428
Page 1: ...Multifunctional DAQ PCIe card PCA 8428 8429 8438 8439 User Guide ...
Page 22: ... PCA 8428 PCA 8429 PCA 8438 PCA 8439 User Guide Notes ...
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