Hello all, I have to perform radiated and conducted emission tests on an intentional radiator, following FCC Part 15, Subpart C test requirements.
This product is a contactless card reader. It's made of an external power supply block (which is not sold with the product) and a kind of box with the antenna included (antenna is loop of coaxial cable, about 20cm diameter). Radiated tests are passed, but conducted levels are about 30 dBµV under the limit at 13.56 MHz (fundamental frequency). I cannot reduce the power to obtain an acceptable level, because this one is necessary to have a good behaviour of the product. With this power, the maximum distance between card reader and card is about 10cm. Do you know if I can replace the integrated antena by a 50 Ohms hood when I perform the conducted emission test, in order to show that no other frequencies are generated by the product, except the one needed for functional purpose ? Do you know if FCC Part 15 or ANSI C63.4 authorizes this kind of procedure ? I thank you a lot for your answers, Meilleures salutations de France, ========================================== Pierre SELVA Laboratory responsible SMEE Actions Mesures EMC & Safety laboratory ZI des Blanchisseries Phone : 33 4 76 65 76 50 38500 VOIRON FRANCE Fax : 33 4 76 66 18 30 e-mail : [email protected] ===========================================
