§ 15.513   Technical requirements for medical imaging systems.

   (a) The UWB bandwidth of an imaging system operating under the
   provisions of this section must be contained between 3100 MHz and
   10,600 MHz.

   (b) Operation under the provisions of this section is limited to
   medical imaging systems used at the direction of, or under the
   supervision of, a licensed health care practitioner. The operation of
   imaging systems under this section requires coordination, as detailed
   in § 15.525.

   (c) A medical imaging system shall contain a manually operated switch
   that causes the transmitter to cease operation within 10 seconds of
   being released by the operator. In lieu of a switch located on the
   imaging system, it is permissible to operate an imaging system by
   remote control provided the imaging system ceases transmission within
   10 seconds of the remote switch being released by the operator.

   (d) The radiated emissions at or below 960 MHz from a device operating
   under the provisions of this section shall not exceed the emission
   levels in § 15.209. The radiated emissions above 960 MHz from a device
   operating under the provisions of this section shall not exceed the
   following average limits when measured using a resolution bandwidth of
   1 MHz:
   Frequency in MHz EIRP in dBm
   960-1610               -65.3
   1610-1990              -53.3
   011990-3100            -51.3
   3100-10600             -41.3
   Above 10600             -51.3

   (e) In addition to the radiated emission limits specified in the table
   in paragraph (d) of this section, UWB transmitters operating under the
   provisions of this section shall not exceed the following average
   limits when measured using a resolution bandwidth of no less than 1
   kHz:
   Frequency in MHz EIRP in dBm
   1164-1240              -75.3
   1559-1610              -75.3

   (f) There is a limit on the peak level of the emissions contained
   within a 50 MHz bandwidth centered on the frequency at which the
   highest radiated emission occurs, fM. That limit is 0 dBm EIRP. It is
   acceptable to employ a different resolution bandwidth, and a
   correspondingly different peak emission limit, following the procedures
   described in § 15.521.

   [ 68 FR 19751 , Apr. 22, 2003, as amended at  72 FR 63823 , Nov. 13, 2007]

   return arrow Back to Top