When testing ADCs or DACs with 16-bit resolution or higher, the QMS is a good candidate and will only need some considerations to ensure good accuracy and enough resolution, especially for those devices under test (DUT) with very low non-linearity specs (less than 1 LSB) and high voltage ranges (greater than 10V). As a rule of thumb, the chosen measuring instrument should have ten times better resolution and accuracy than the devices being tested. This is where additional techniques may be required to enhance accuracy when measuring voltages with the QMS. One effective method involves implementing a pedestal voltage source along with instrumental amplifiers on the DIB and performing focused calibration with a high-accuracy digital multimeter. Together, these improve the QMS’s resolution and accuracy. This paper will explain how this technique works, how to implement it, and will analyze how temperature can impact the pedestal voltage, potentially leading to incorrect voltage measurements on the DUT. The paper will also provide recommendations on how to mitigate the impact of temperature changes.