4. Functions
AD12-16(PCI)E, AD12-16U(PCI)E, AD16-16(PCI)E
63
Output data
Set output data to output analog signals. You can output analog signals to the specified channel or
channels (from 0 to an arbitrary number of channels) by executing the software command.
The following equation represents the relationship between output data and voltage.
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; that for the 16-bit device is 65536.
The table below shows the relationship between output data and voltage in the ±10-V range.
Voltage
Output data(12-bit)
Voltage
Output data(16-bit)
+9.995V
4095
+9.99970V
65535
:
:
:
:
0.005V
2049
0.00030V
32769
0V
2048
0V
32768
-0.005V
2047
-0.00030V
32767
:
:
:
:
-10.000V
0
-10.000V
0
Ex.: When 3V is output at a resolution of 12-bit in the ±10-V 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: 2.9998 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.
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