There are couple places you can check, and usually I would check them all to verify everything is sound.
1. The generator control button in the software will be green.
2. The display on the generator itself has an indicator for ON(Blue)/OFF(Red) for each channel. It is in the upper right corner of each logical section of the screen.
3. The display on the generator will also show the frequency in use. Look at the line that starts with F= just below the graphic icon of a squiggly line. This should read something other than all zeros.
4. Finally, you can check if using a remote, that the LEDs are doing something.
Authored by: Jeff Kaczor