Contec DAI12-4(USB)GY, User Manual

Page: 32 / 73

3. Setup
DAI12-4(USB)GY
27
Sampling
Output range and conversion data
On DAI12-4(USB)GY , the range of output can be selected from 0 -
5V, 0 - 10V, ±5V, ±10V, 0 - 20mA by using software. The digital
signals are converted into analog output signals at a 12-bit resolution
level based on the range setting.
Unipolar range
Indicates that the range of
controlled voltage is single polar
range, for this module, it is 0 -
5V or 0 - 10V. The right figure
shows the relation between
conversion data and voltage
value within the range of 0 -
10V.
The right figure shows the
relation between converted data
and voltage value within the
range of 0 - 10V. Because the
converted data is based on the
value of dividing 10V voltage
width (voltage span) by 4096,
the converted data increases
every 1, the voltage value
increases 2.44mV.
Moreover, the conversion data
increases every 1, each voltage
value increases 1.22mV in case
of 0 - 5V range. Because of the
same definition within the range
of 0 - 20mA, the conversion data
increases every 1, the current
value increases 0.00488mA. (Decimal) (Hexadecimal)
10V
4095 FFFh
9.997 56 V
4095 FFFh
9.997 56 V
4094 FFEh
9.995 12 V
4093 FFDh
9.992 68 V
: :
2049 801h
5.002 44 V
2048 800h
5.000 00 V
2047 7FFh
4.997 56 V
: :
2 002h
0.004 88 V
1 001h
0.002 44 V
0V
0 000h
0.000 00 V
Voltage value [current value] = voltage span [current span] of the output range /
4096 * (conversion data)