Chapter 3: Architecture
43
Data format
Data in the data stream has the following format. Each two
consecutive bytes contain a single sample from the A/D converter.
Data is stored repeatedly sample by sample for all channels in the
channel list. (Table 19 shows a PowerDAQ 16-bit board data format.
For PowerDAQ 12-bit boards, only 12 LSBs (Least Significant Bits) are
valid. PowerDAQ II boards automatically place zeroes in any unused bit
locations.)
Table 16: Data Format Table for a 16-bit Board
Table 17: PowerDAQ II 12-bit data format
Table 18: PowerDAQ II 14-bit data format
Table 19: PowerDAQ II 16-bit data format
1st channel
2nd channel
…
last channel
1st channel …
sample
sample
sample
sample
bit15 bit14 bit13 bit12 bit11 bit10 bit9 bit bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
bit15 bit14 bit13 bit12 bit11 bit10 bit9 bit8 bit7 bit6 bit5 bit4 0x0 0x0 0x0 0x0
bit15 bit14 bit13 bit12 bit11 bit10 bit9 bit8 bit7 bit6 bit5 bit4 bit3 bit2 0x0 0x0
bit15 bit14 bit13 bit12 bit11 bit10 bit9 bit8 bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
Summary of Contents for PD2-MF
Page 5: ...Table of Contents iii Index 137 ...
Page 11: ...1 1 Introduction ...
Page 18: ......
Page 19: ...9 2 Installation and Configuration ...
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Page 35: ...25 3 Architecture ...
Page 63: ...53 4 PowerDAQ Software Development Kit PD SDK ...
Page 106: ......
Page 107: ...97 5 Calibration ...
Page 109: ...99 A Appendix A Specifications ...
Page 110: ...Appendix A Specifications 100 ...
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Page 113: ...103 B Appendix B Accessories ...
Page 118: ......
Page 119: ...109 C Appendix C Application Notes ...
Page 125: ...115 D Appendix D Warranty ...
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Page 129: ...119 E Appendix E Glossary ...
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