| LEDs | Meaning | | :--- | :--- | | Red only | Steady logic High (1) | | Green only | Steady logic Low (0) | | Yellow flash | Pulse or transition present | | Red + Yellow (alternating) | Clock or data signal | | Both dim | Floating, tri-stated, or bad connection | | No LED | No power or broken probe |
A "Low" state is generally anything below 0.8V. When the probe detects this, a green LED typically illuminates. This indicates a "False" signal or a path to ground. 3. Identifying Pulse and Floating States logic probe function
→ Check power clips polarity. Verify circuit has power. | LEDs | Meaning | | :--- |