C Figure Q2 C I Depicts A Printed Circuit Board Pcb With An Interface Cable For The Given 100 Mhz Current Amplit 1 (26.09 KiB) Viewed 32 times
(c) Figure Q2 (c)(i) depicts a Printed Circuit Board (PCB) with an interface cable. For the given 100 MHz current amplitudes on the circuit loop and interface cable, will the PCB and cable's radiated emission comply with the Federal Communications Commission (FCC) part 15 class B limit? Refer to Figure Q2 (c)(ii) for the FCC part 15 class B limit.
IDM = 5 mA at 100 MHz ICM = 50uA at 100 MHz 50 cm 1 cm 2.5 cm Figure Q2 (c)(i): Printed Circuit Board (PCB) with interface cable FCC part 15 class B limit Frequency (MHz) 30-88 88-216 216-960 >960 Limits at 3m(dBμV/m) 40 43.5 46 54 Figure Q2 (c)(ii): FCC part 15 class B limit
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