Testing of spurious emissions should be performed with all transmitters functioning.  This ensures that additional spurs are not generated. Testing must also check for the non-coordination requirement in Section 15.247(h).  Which prohibits the system from monopolizing the entire frequency band.

Each transmitter must also meet all of the FHSS requirements individually. For instance, each transmitter must individually use the minimum number of channels, use each frequency equally on average and transmit from a pseudo random list.  If the device complies with all of the above, the proposed system is acceptable.