Fluke networks mt 8200 49a micromapper cable tester fluke networks mt 8200 49a p the fluke networks mt 8200 49a is a micromapper cable tester that allows network professionals to verify the integrity of ethernet twisted pair cabling in one quick step the micromapper quickly and easily tests twisted pair cabling allowing you to see opens shorts crossed reversed and split pairs simply push the test button and the micromapper will automatically scan all wire pairs for any existing faults