Hi All, I had some equipment calibrated by a.n.other accredited calibration house - chosen by "the management" because it was cheaper. Things were fine for a couple of years -then the problems started. The manufacturers would have calibrated each module within the equipment to ensure that it was working correctly at any and all frequencies in the range.. The a.n.other calibration house adjusted any module to bring the equipment into spec at their "accredited" test frequencies. At some frequencies the local oscillator would go unstable and spread over 100kHz of spectrum at low frequencies - and many MHz at high frequencies. Remember that the maker probably has the necessary jigs and custom test equipment, while the "generic" cal house probably does not. The maker probably charges a lot of money for the calibration - while the generic is cheaper. I only go to the manufacturer now, where high tech equipment is involved. The generic cal-house gets the attenuators, cables current probes etc. I hope that this helps. Regards Tim
************************ Tim Haynes A1N10 Electromagnetic Engineering Specialist SELEX Sensors and Airborne Systems 300 Capability Green Luton LU1 3PG ( Tel : +44 (0)1582 886239 7 Fax : +44 (0)1582 795863 ) Mob : +44 (0)7703 559 310 * E-mail : [email protected] P Please consider the environment before printing this email. There are 10 types of people in the world-those who understand binary and those who don't. J. Paxman ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Luke Turnbull Sent: Friday, November 21, 2008 11:01 AM To: [email protected]; [email protected] Subject: Re: EMI Receivers *** WARNING *** This mail has originated outside your organization, either from an external partner or the Global Internet. Keep this in mind if you answer this message. Tim, R&S receivers do not have to go back to the manufacturer. We have our receivers calibrated on site by a UK calibration lab. Luke Turnbull >>> <[email protected]> 20 November 2008 19:39 >>> Hello, I'm looking to purchase an EMI receiver for use in a 5 meter chamber. Does anyone recommend a certain model? I would want one that has at least a frequency range from 150kHz to 18GHz so one unit can be used for radiated and conducted emission measurements. I'm looking for a unit that can be calibrated by a local accredited calibration lab. I believe all R&S receivers need to be sent to them for calibration, which there would be risk and time involved in shipping. Thanks, Tim Pierce ________________________________ One site has it all. Your email accounts, your social networks, and the things you love. Try the new AOL.com <http://p .atwola.com/promoclk/100000075x12129629 9x1200825291/aol?redir=http://www.aol.c m/?optin=new-dp&icid=aolcom40vanity&ncid=emlcntaolcom00000001> today! - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> Conekt is a trading division of TRW Limited Registered in England, No. 872948 Registered Office Address: Stratford Road, Solihull B90 4AX - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> SELEX Sensors and Airborne Systems Limited Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS14 3EL A company registered in England & Wales. Company no. 02426132 ******************************************************************** This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. ******************************************************************** - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]>
