I would guess the answer is b) 5x the 12GHz transmitter. I think (going from memory) ANSI C63.4 gives test instructions for receivers. The Local Oscillator or the receiver must be "active", i.e. receiving a real signal (alternately you can inject a test signal into the receiver). Thus making that a signal source at 12GHz. The 5x applies to the "highest frequency generated or used" by the device.
Survey Says? Regard David Spencer Xerox Corp. -----Original Message----- From: Grasso, Charles [mailto:[email protected]] Sent: Tuesday, August 20, 2002 12:23 PM To: '[email protected]' Subject: Question on highest frequency used Hi - and just when I thought I had it all figured out.. I have a question on the FCC requirement to test a product to the highest frequency used. Say a company has an RF receiver that has a DSP processor in it running at 50MHz. Lets also say that said receiver is pointed at a transmitter that has a 12Ghz signal. Should I test the receiver to a) 5X the 50MHz or b) 5x the 12GHz transmitter signal? We have an FCC interpretation - bet you can't guess what it is.. Charles Grasso Senior Compliance Engineer Echostar Technologies Corporation phone: 303.706.5467 FAX: 303.799.6222 Charles Grasso Senior Compliance Engineer Echostar Technologies Corporation phone: 303.706.5467 FAX: 303.799.6222 ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list" ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
