Z-World eDisplay OP7200, User Manual

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User’s Manual 51
Calibrates the response of the A/D converter channel as a linear function using the two conversion points
provided. Four values are calculated and placed into global table
_adcCalib
to be stored later into
using the function
anaInEEWr()
. Each channel will have the following information:
a linear constant,
a voltage offset,
a calculation gain code used to calculate calibrations, and
a user gain code to set voltage range (defaults to the calculation gain code).
PARAMETERS
channel is the analog input channel number (0 to 7) corresponding to AIN0–AIN7
opmode is the mode of operation:
SINGLE —single-ended input line
DIFF —differential input line
gaincode is the gain code of 0 to 7:
int anaInCalib(int channel, int opmode,
int gaincode, int value1, float volts1,
int value2, float volts2);
channel SINGLE DIFF
0 +AIN0 +AIN0 -AIN1
1 +AIN1 —
2 +AIN2 +AIN2 -AIN3
3 +AIN3 —
4 +AIN4 +AIN4 -AIN5
5 +AIN5 —
6 +AIN6 +AIN6 -AIN7
7 +AIN7 —
Gain Code Multiplier
Voltage
Range
0 ×1 0–20 V
1 ×2 0–10 V
2 ×4 0–5 V
3 ×5 0–4 V
4 ×8 0–2.5 V
5 ×10 0–2 V
6 ×16 0–1.25 V
7 ×20 0–1 V