InputRange (Data Acquisition Toolbox)

InputRange specifies the range of the analog input hardware device. For many devices, this range is expressed in terms of the gain and polarity. Therefore, if you set InputRange to a particular value, then the gain and/or polarity are automatically modified accordingly.

Hardware devices have a finite number of InputRange values that can be set. If an InputRange value is specified but does not match a valid value, then the closest supported value is automatically selected by the engine.

Since InputRange can be set to a value that differs from the one specified, you should return the actual input range for each channel.

ActualRange = get(AI.Channel(index), 'InputRange');

Alternatively, you can use the setverify function. This function sets the input range value and then returns the actual value that is set.

ActualRange = setverify(AI.Channel(index), 'InputType', Value)

Characteristics


Device Objects	AI
Class	Channel
Access	Read/write
Data Type	Vector of doubles
Modify while Running	Yes

Values

The default value is supplied by the hardware driver.