Phil the New Phlebotomy Tech is performing a bleeding time. He applied a blood pressure cuff to the upper arm of the bleeding time site. Phil inflated the blood pressure cuff to 40mg and locked it at that level before beginning the test. After making the punctures with the automatic incision device, he deflates the cuff and begins the test. Every thirty seconds he applies blotting paper to the blood flow, until the blood has clotted. Phil documents the amount of time it took for bleeding to stop. What (if anything) did Phil do wrong?