You connect signal source and receiver with a convenient length of cable and establish a baseline (-10 dBm out of sig gen yields X dBm at receiver). Then you connect the cable-under-test (CUT) between the known cable and the receiver and measure the additional loss. The purpose of the original cable is that usually the sig gen output reading is for indication only, i.e., the receiver is the only calibrated item necessary. If you don't have a calibrated receiver that is OK too, you just need a calibrated attenuator with 1 dB resolution really.
on 11/30/01 7:13 AM, bolab...@itsqs.com at bolab...@itsqs.com wrote: > > I have a few questions for the gurus in the group regarding cable > calibration for emissions and immunity tests > 1. what is the preferred step by step procedure for cable calibration using > a sig. gen. and spectrum analyzer? > 2. Is there any standard that outlines the procedure? > 3.Does the procedure vary depending on the length of cable and thickness eg. > coax vs cat. 3,4,5 > 4. How often should you calibrate the cables? > > I would really appreciate comments on this subject. Thanks > > Bayode Olabisi > > > ------------------------------------------- > 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: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Michael Garretson: pstc_ad...@garretson.org > Dave Heald davehe...@mediaone.net > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > No longer online until our new server is brought online and the old messages > are imported into the new server. > ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
