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A-1
A
Specifications
Tables A-1 to A-7 list specifications for the DAS-1800ST/HR Series
boards.
Table A-1. Analog Input Specifications for DAS-1800ST Series
Feature
DAS-1801ST/ST-DA
DAS-1802ST/ST-DA
Number of channels
Software-selectable as 8 differential or 16 single-ended
Input mode
Software-selectable as unipolar or bipolar
Resolution
12-bit (1 part in 4096)
Data format
16-bit 2’s complement
FIFO size
1024 word
Channel-gain QRAM size
256 locations
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 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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