Internal Channels

On some devices, you can either acquire a signal present on the I/O connector or acquire a signal that is being generated from the internal multiplexer (an internal channel). The internal channels available on the multiplexer are typically used for calibration purposes, but you can also sample them as you would a physical signal present on the I/O connector. To read from one of these internal channels, you must use the internal channel as the device's physical channel (for example, Dev1/_aignd_vs_aignd) when creating the virtual channel.