A project for the Air Force Special Weapons Center is to develop, test, and deliver thin explosive matrices on aluminum and/or copper foil Mylar laminates. This report briefly discusses problems encountered with the recording of manganin pressure gage data. Four tests were fired on November 5 and 6 as an early attempt at recording pressure and impulse from HE loads. Problems encountered during this series were noise on the manganin gage oscilloscope records induced from the capacitor discharge current, and extreme sloping of the baseline of the pulsed manganin gages. HE tests were discontinued at this time until the gages and the power supplies could be studied for causes of the sloping baselines.