Soldering Iron Analyzer has a portable unit with long battery life. It checks either temperature stability or absolute temperature. It uses contact pyrometer for monitoring stability. Low-level voltage is measurable from working area of tip to ground. It is developed for testing soldering irons for compliance with the DOD-STD-2000 and the new MIL-STD-2000 specifications. It is a portable unit capable of testing tip temperature, tip to ground resistance and tip to ground noise.