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APPENDICES
A
/260+ TECHNICAL SPECIFICATIONS
Except where otherwise stated, all figures quoted in the specifications are typical at 25°C.
A.1
HARDWARE SPECIFICATION
FUNCTION
PCI bus compatible multi-function data acquisition board
providing high speed, sixteen channel analog input, two channel
analog outputs with counter/timer facilities and 24 bit digital
input/output.
A.1.1
ANALOG INPUT
Number of Input Channels
Sixteen single-ended or eight differential user input channels.
Analog Input mode
Analog inputs may be either all single- ended or differential. This is
selected in software by the driver.
Analog Input Ranges
Analog inputs may be either all unipolar or bipolar. This is selected
in software by the driver. The gain (and therefore input range) of
each analog input channel is individually software programmable.
Bipolar
±1.25 V, ±2.5 V, ±5.0 V, ±10.0 V
Unipolar
0 to +2.5 V, 0 to +5.0 V, 0 to +10.0 V
Input Impedance
1.0 M
:
/ <100 pF each channel
Analog to Digital Converter
ADC Resolution
16 bits (1 part in 65536)
Conversion Time
1.6μs,
Sample and Hold
On chip. 0.4 μs track time.
On-chip Reference
Derived from on board or external reference voltage.
Overall Analog Conversion
Accuracy
(Includes calibration,
±4 least significant bits (typical)
linearity and noise errors)
Specified at
+25° C ambient temperature
±10 volts bipolar input voltage range
Voltage Reference
Initial Accuracy
0.05%
Temp coefficient
3 ppm/ °C
Содержание PCI230+
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