Adapters and Balun Mate | Black Box MT256A-F, MT257A manual

G.703 ADAPTERS AND BALUN MATE II

3.Looking down at the top of the circuit board with the RJ-45 jack facing to the left, you should be able to see both jumpers in the middle of the board: JP1 toward the back and JP2 toward the front. Move either or both of these jumpers so that they are sitting on just one jumper post instead of connecting both posts. The shield link that passes through each jumper you move will be broken.

4A. If you’ve set the jumpers on an Adapter, realign the case halves with the end inserts and snap the case halves back together.

4B. If you’ve set the jumpers on a Balun Mate II module, carefully slide the module back into its slot in the rack chassis, guiding its coaxial connectors through their holes in the chassis’ front panel. Then screw the module’s nuts and washers back into the screwposts on the back of the front panel to reattach the module to the chassis.