Data Acquisition Toolbox

Managing Acquired Data

At the core of any analog input application lies the data you acquire from a sensor and input into your computer for subsequent analysis. The role of the analog input subsystem is to convert analog data to digitized data that can be read by the computer. There are two ways to manage acquired data:

• Preview the data with the peekdata function.
• Extract the data from the engine with the getdata function.

After data is extracted from the engine, you can analyze it, save it to disk, etc. In addition to these two functions, there are several properties associated with managing acquired data. These properties are listed below.

Table 5-5: Analog Input Data Management Properties

Property Name	Description
SamplesAcquired	Indicate the number of samples acquired per channel.
SamplesAvailable	Indicate the number of samples available per channel in the data acquisition engine.
SamplesPerTrigger	Specify the number of samples to acquire for each channel group member for each trigger that occurs.

Channel Skew

Previewing Data