NPP-TB Series
To provide phantom powered microphone patching, all of the shields (SLEEVE contacts) from this device must be tied together. This can be accomplished by grouping the grounds of these channels via the PCB bus (using solder bridges). This group is then connected to the general technical ground.

NPPA-TT Series
To provide phantom powered microphone patching, all of the shields (SLEEVE contacts) from this device must be tied together. This can be accomplished by grouping the grounds of these channels via the PCB bus (using solder bridges). This group is then connected onto the general technical ground. Because of the missing SLEEVE normalling contact it is necessary to wire internally the ground (sleeve) contact of the top and bottom row of each channel. If this is critical with respect to possible ground loops make the connections via patch cable instead of using the normalling feature.

NYS-SPP-L1
Neutrik does not recommend putting any type of phantom power or simplex power through a patch panel. However, if you must run phantom power through the NYS-SPP-L1 Patch Panel, make sure to install the included grounding clips to Chassis Common, on every module that will have phantom power running through it. And always make sure to turn off the phantom power before patching and unpatching! You will also need to tie or bond the NYS Panel to the technical ground of your system.