Specify value held by analog output subsystem
Note: You cannot use the legacy interface on 64–bit MATLAB®. See Session-Based Interface to acquire and generate data.
DefaultChannelValue specifies the value to write to the analog output (AO) subsystem when data is finished being output from the engine.
DefaultChannelValue is used only when OutOfDataMode is set to DefaultValue. This property guarantees that a known value is held by the AO subsystem if a run-time error occurs. Note that sound cards do not have an OutOfDataMode property.
Create the analog output object ao and add two channels to it.
ao = analogoutput('nidaq','Dev1'); addchannel(ao,0:1);
You can configure ao so that when it stops outputting data, a value of 1 volt is held for both channels.
ao.OutOfDataMode = 'DefaultValue'; ao.Channel.DefaultChannelValue = 1.0;