112
discrepancy is less then 2 LSB.
4. Adjust the
BIPOLAR
offset voltage. First, write any value to
BASE+9 to clear FIFO. Then set the A/D channel to channel 0,
and to set the range as –5 V to +5 V.
5. Write the
value
from
0x0000
to
0x00FF
sequentially to the
Calibration Command and Data register
(BASE+18), and get
each bipolar range’s data by the software trigger A/D method.
Repeat this procedure 1000 times, then average those data for
each
value
. Check if the average data is close to 32767.5. If so, go
to the next step. Otherwise, you must change the
value
and repeat
the whole procedure in this step again until the average data is
close to 32767.5.
6. Adjust
UNIPOLAR
offset voltage. First, write any value to
BASE+9 to clear FIFO. Then set A/D channel to channel 0, and
set the range as 0 V to 10 V.
7. Write the
value
from
0x0100
to
0x01FF
sequentially to the
Calibration Command and Data register
(BASE+18), and get
each bipolar range’s data by the software trigger A/D method.
Repeat this procedure 1000 times, then average those data for
each
value
. See whether the average data is close to 32767.5. If so,
go to the next step. Otherwise, you must change the
value
and
repeat all the procedure in this step again until the average data is
close to 32767.5.
8. Adjust
GAIN
offset voltage. First, write any value to BASE+9 to
clear FIFO. Then set A/D channel to channel 2, and set the range
as -5 V to +5 V.
Summary of Contents for MIC-3716
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Page 8: ...viii Table E 2 D A binary code table 117...
Page 11: ...1 Introduction 1 CHAPTER...
Page 17: ...7 Fig 1 1 Installation Flow Chart...
Page 21: ...11 Installation and Configuration CHAPTER 2...
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Page 41: ...31 Signal Connections CHAPTER 3...
Page 44: ...34 Fig 3 1 I O connector pin assignments for the MIC 3716...
Page 50: ...40...
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Page 55: ...45 Software Programming Overview CHAPTER 4...
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Page 61: ...51 Calibration CHAPTER 5...
Page 77: ...67 Appendixes...
Page 81: ...71 Appendix B Block Diagrams...
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