| Data Acquisition Toolbox | |
Specify how the value held by the analog output subsystem is determined
Description
When queued data is output to the analog output (AO) subsystem, the hardware typically holds a value. For National Instruments and ComputerBoards devices, the value held is determined by OutOfDataMode.
OutOfDataMode can be Hold or DefaultValue. If OutOfDataMode is Hold, then the last value output is held by the AO subsystem. If OutOfDataMode is DefaultValue, then the value specified by the DefaultChannelValue property is held by the AO subsystem.
Characteristics
| Vendor |
National Instruments, ComputerBoards |
| Usage |
AO, Common |
| Access |
Read/write |
| Data type |
String |
| Read-only while Running |
Yes |
Values
{Hold} |
Hold the last output value. |
DefaultValue |
Hold the value specified by DefaultChannelValue. |
Example
Create the analog output object ao and add two channels to it.
ao = analogoutput('nidaq',1);
addchannel(ao,0:1);
You can configure ao so that when queued data is finished being output, a value of 1 volt is held for both channels.
ao.OutOfDataMode = 'DefaultValue';
ao.Channel.DefaultChannelValue = 1.0;
Properties
| | NumMuxBoards | RampRate | |