Contec AIO-120802LN-USB, Руководство пользователя

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6. Function
AIO-121602LN-USB, AIO-120802LN-USB
73
Output data
Output data = ((Voltage – Min. range value) x Resolution) / (Max. range value – Min. range value)
The value of resolution for the 12-bit device is 4096.
< ± 10V range >
The table below shows the relationship between output data and voltage in the ±10-V range.
Voltage Output data(12-bit)
+9.995V 4095
: :
+0.005V 2049
0V 2048
-0.005V 2047
: :
-10.000V 0
Ex.: When 3V is output at a resolution of 12bit in the ±10V range
Output data = (3 - (-10))
x
4096 ÷ (10 - (-10))
= 2662.4 *
* The value that can be set as output data at this time is an integer. Select "2662" or "2663" as the
output data.
The analog signal corresponding to the output data contains an error as follows:
- Output data "2662" converted to: 2.9980 V
- Output data "2663" converted to: 3.0029 V
This error is a consequential error occurring when output data is obtained from an expected analog
value.
< 0 - 10V range >
The table below shows the relationship between output data and voltage in the 0 -10-V range.
Voltage Output data(12-bit)
+9.998V 4095
: :
+5.002V 2049
+5.000V 2048
+4.998V 2047
: :
0V 0
Ex.: When 3V is output at a resolution of 12bit in the 0 -10V range
Output data = (3 - 0)
x
4096 ÷ (10 - 0)
= 1228.8 *