Using the signal probe to check connections in a project

The signal probe is used to check the audio paths between devices by connecting to the wires in the project.

The Probe point valid LED lights when the audio wire or wiring node you are testing is connected to an audio device, e.g. a pink noise generator, and not a logic device, e.g. an AND gate. The device also displays the device ID and port type.

Note: The Signal Probe is designed to be used when the project has been deployed and audio can pass between the devices. The Probe point valid LED only works when the project has been deployed.

Tips:

• You can connect the output wiring node on the Signal Probe block to a meter to instantly see when a signal is present at the test point.
• As an alternative to using the Signal Probe device, you can connect an oscilloscope to an output connector on a NioNode to check for the presence of a signal.

To use the signal probe to check connections in a project

1. Emulate or deploy the project.
2. Double-click the Signal Probe device block to open it.
3. Click the signal probe icon.

   The cursor will change to a signal probe.

4. Click a wire or wiring node to view the device ID and port type, and to monitor the audio at that place in the design.

   The signal probe will stay connected to the point that was clicked, allowing continuous monitoring.

   If the point you have clicked is connected to an audio device (and not a logic device, for example), the Probe point valid LED will be lit.

   To release the probe, click the Signal probe icon.

   To stop using the probe, drag the Signal Probe icon over to the Signal Probe device block, then click the gray box in the top left corner.