4. Functions
56
AD12-8(PM)
Analog Output Function
The PC card converts digital data to analog signals according to the resolution.
Resolution
"Resolution" signifies the number of bits used by an analog output device to represent analog signals.
The higher the resolution, the more finely the voltage range is segmented, allowing the device to
convert digital values to analog equivalents more precisely.
A device with a resolution of 12-bit divides the range width into 4096 segments.
When the device covers the range of 0 - 10 volts, the minimum unit of converted voltages is 10÷4096
≠
2.44mV.
If the device has a resolution of 16-bit, it is 10 ÷ 65536
≠
0.153mV instead.
AD12-8(PM)
: The resolution is 12-bit.
* The output range of AD12-8(PM) is designed so that the minimum unit of the converted voltage may
be set to 1mV.
Channel
"Channel" represents each point of analog output.
For individual channel numbers, see "Using the On-board Connectors" to "Connector Pin Assignment"
in Chapter 3 "External Connection".
You can specify an arbitrary number of points of analog output by setting the channels by means of
software.
Range
"Range" means the range of voltages at which analog output can be performed.
The output range of this device cannot be changed from 0 - +4.095V.