(A). The resolution of the Waveform View is too low to see the activity.
REMEDY: Zoom In to see the details of the activity.
(B). The signal has been defined with the wrong channel selected.
REMEDY: Edit the signal definition and change the channel selection. The colors are repeated for each group of 9 channels, so be sure to select the correct one.
(C). The signal definition has been "disabled".
REMEDY: Edit the signal definition and uncheck the Disabled option. The channels for disabled signals will not appear in the captured data.
(D). Bad Ground reference.
REMEDY: Connect one of DigiView's ground wires (black probes) to a ground point as electrically close as possible to the signal connections.
(E). Incorrect Trigger Threshold.
REMEDY: The transitions will be undetectable If the trigger threshold is set too high or too low for the voltage range of the transitioning signal. Change the Threshold setting for the physical channel so that it is near the center of the signal's voltage swing.
(F). Insufficient power or Communication error, see 1.B,1.C,1.D above.