The MPS46 is designed for maximum safety during testing. Key DMA design features protect both the test set and the systems under test. Negative Qc, a pressure condition of Ps greater than Pt, is prevented in both manual and automatic operation. If AC power is lost then the Unit Under Test (UUT) is safely isolated and can be manually vented preventing instrument and test set damage.
Numerous pre-set factory or user programmed safe limits are provided to prevent damage to the UUT. These limits can be modified by the user either temporarily or permanently, with password protection if desired.

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