this is experimental data format for 24 bit mode use with 24 bit AD board.

sample 24bit mode Arduino code.

need to use new IBVA application ( up to V5.1.2.9 ) to read this data format.

　：

ABC     DEF     012     345

　：

TAB (0x09) is data separation

CR (0x0D) is end of one sampling for 2 channel data.

two data byte need to put together to get 24 bit data.

CH 1 data = ABCDEF

CH 2 data = 012345

24 bit : unipolar input

maximum : fff fff (1111 1111 1111 1111 1111 1111) --> 16,777,216

center  : 800 000 (1000 0000 0000 0000 0000 0000) ---> 8,388,608

minimum : 000 000 (0000 0000 0000 0000 0000 0000) -----------> 0

sample Arduino code use bipolar input mode.

24 bit offset binary : bipolar input : when use + side input, - side input to GND,

maximum 5 V : fff fff (1111 1111 1111 1111 1111 1111) --> 16,777,216

center 2.5 V : bff fff (1011 1111 1111 1111 1111 1111) --> 8,388,608 + (8,388,608/2 )

0 V  : 800 000 (1000 0000 0000 0000 0000 0000) ---> 8,388,608

when use + side input, - to GND, then shows number only : fff fff (5V) to 800 000 (0V)

to make number 800 000 to 000 000, need to put input voltage

(+ input) - (- input) = - voltage.

when -5 V -->> 000 000

/*

bipolar input mode

5 V / 8,388,608

1 digit = 0.59604645 micro V

when use amp

gain = 1000

1 digit = 0.00059604645 micro V

*/

/*

when use X 1000 amp

maximum 5 mV : fff fff (1111 1111 1111 1111 1111 1111) --> 16,777,216

center 2.5 mV : bff fff (1011 1111 1111 1111 1111 1111) --> 8,388,608 + (8,388,608/2 )

0 mV  : 800 000 (1000 0000 0000 0000 0000 0000) ---> 8,388,608

1 digit = 0.00059604645 micro V

*/

/*

when use X 1000 amp with 2.5 V offset

maximum +2.5 mV : fff fff (1111 1111 1111 1111 1111 1111) --> 16,777,216

center 0 mV : bff fff (1011 1111 1111 1111 1111 1111) --> 8,388,608 + (8,388,608/2 )

minimum -2.5 mV  : 800 000 (1000 0000 0000 0000 0000 0000) ---> 8,388,608

1 digit = 0.00059604645 micro V

*/

/*

when 10 bit mode

5 V / 1024 =

1 digit = 0.0048828125

when

gain = 25000

1 digit = 0.1953125 micro V

*/

/*

10 bit mode resolution / 24 bit mode resolution

0.1953125 micro V / 0.00059604645 micro V

= 327.679998765196907

*/