The Logic Probe is a very effective tool for inspecting and repairing the logic circuits. It can be used directly to inject a signal into the login circuits without removing the IC or braking the circuits. The 100mA pulse output insures that the device under test will be pulsed, while the short 10 ohms duration of the output pulse makes sure that no damage will be done to the circuit under test. The Logic Pulser output is switchable between 0.5 and 400 Hz, making it suitable for use with either a login probe or with an oscilloscope, also has an external sync input, which enables the user to synchronize the pulse output with an external signal, such as a computer clock circuit.