A-1
A
Specifications
Tables A-1 to A-4 list specifications for the DAS-1800HC Series boards.
Table A-1. Analog Input Specifications
Feature
DAS-1801HC DAS-1802HC
Number of channels
Software-selectable as 32 differential or 64 single-ended
Input mode
Software-selectable as unipolar or bipolar
Resolution
12-bit (1 part in 4096)
Data format
16-bit 2’s complement, right-justified
FIFO size
1024 word
Channel-gain QRAM size
64 locations
Range and gain
Unipolar
Bipolar
0.0 to +5.0V for gain = 1
0.0 to +1.0V for gain = 5
0.0 to 100mV for gain = 50
0.0 to +20mV for gain = 250
±5.0V for gain = 1
±1.0V for gain = 5
±100mV for gain = 50
±20mV for gain = 250
0.0 to +10V for gain = 1
0.0 to +5.0V for gain = 2
0.0 to +2.5V for for gain = 4
0.0 to 1.25V for gain = 8
±10V for gain = 1
±5.0V for gain = 2
±2.5V for gain = 4
±1.25V for gain = 8
Absolute accuracy
Typical
Maximum error
0.01% of reading ±1 LSB for all ranges
• 0.02% of reading ±1 LSB max @ 25˚C for gain < 250
• 0.03% of reading ±1 LSB max @ 25˚C for gain = 250
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