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The following step should be taken in this mode:
- Open a serial comport
- For TEI0015 and TEI0016: Send the command "1", "2", "4" or "8" for the ADC pre-amplification of 1, 2, 4, 8
For TEI0023: Send the command "1", "2", "3", "4", "5", "6" or "7" for the ADC pre-amplification of 0.25, 0.5, 1, 2, 4, 8 and 16 - Send the command "t" to trigger the consecutive measurement.
(The module always measures 1 MSample of data into its SD-RAM) - Clear the PCs serial comport input buffer of the opened comport
- Send the command "+" or "*"to the module, it then transmits 128 or 16384 Samples of ADC values
- Read the amount of ADC values in one chunk of 128 or 16384 samples from the PCs serial input buffer
(Otherwise there is a high possibility of a misalignment of nibbles) - Repeat the reading of chunks to a maximum of 1 mega sample
- Close the comport
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The layout of the ADC circuit is further described in the Analog Devices circuit note CN-0393.
Module TEI0023 - ADAQ4003BBCZ
Resolution: 18-bit in 5 nibbles
Maximum sampling rate: 2 MSPS
Order of Values:
Hex | Dec | Hex | Dec | ||
---|---|---|---|---|---|
Mid scale | 0x00000 | 0 | |||
Positive 1 LSB | 0x00001 | 1 | to full scale -1 LSB | 0x1ffff | 131071 |
Negative full scale | 0x20000 | 131072 | to -1 LSB | 0x3FFFF |
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