Peter: I acted as a professional witness in a similar claim that clocked a neighbour doing 110 in an 80 Km zone. The neibour lost.
I attempted to prove there was the possibility of EMI from a local 50Kw broadcast transmitter which was less than 1/4 mile away. Since the reading taken is a gated reading the gun is only listening for a very few miliseconds to acquire the signal that pretty well ruled out EMI as a souce. Re the calibration. The officier was cross examined by the defendant's lawyer as to his training and qualifications that would ensure he/she knew that the rinstrument was calibrated. They simply use a tuning fork with the gun pointed at it ( one method) and it can be self calibrated. One can request at what time was the gun calibrated and what is the maximum length of time between calibrations as these things do drift over time . This particular gun operated in the 10Ghz band and was relatively new. Older units that did not take a gated reading were susceptible to errors. Another point to make is the angle at which the reading was taken. It was overlooked in the case in which I participated but there was a sharp bend in the road and there was no way my neiighbour could have been travelling at the speed claimed from the angle where the reading was taken. It cost him $1000 and some demerit points. Many judges will side with the officer when push comes to shove but at least ask the right questions and you may find yourslef believed. Ralph Cameron, EMC Consulting and Suppression of Consumer Electronics After sale) ----- Original Message ----- From: "Peter Merguerian" <pmerguer...@itl.co.il> To: <emc-p...@majordomo.ieee.org> Sent: Thursday, November 16, 2000 9:28 AM Subject: Speed Measuring Devices > > Dear All, > > Yes, I did get a speeding ticket today! I am not sure if I was speeding or > not - I do not have my eyes on the speedometer all the time! I asked the > policewoman to show me the calibration certificate on her speed measuring > gun. She did not know what I was talking about! I inspected the gun and did > not see any stickers on it. > > I plan to go to court and attempt to convince the judge that the speeding > gun was not calibrated and/or the gun's measurement data may have been > affected by emissions from another device. > > Can anyone in the calibration business send me professional opinions on the > methods and reasons for calibrating speeding guns? > > What is the best way to present this case in court? > Peter Merguerian > Managing Director > Product Testing Division > I.T.L. (Product Testing) Ltd. > Hacharoshet 26, POB 211 > Or Yehuda 60251, Israel > > Tel: 972-3-5339022 Fax: 972-3-5339019 > e-mail: pmerguer...@itl.co.il > website: http://www.itl.co.il > > TO LEARN ABOUT AUSTRALIAN AND NEW ZEALAND REQUIREMENTS, CONTACT ME AT THE > EARLIEST STAGES OF YOUR DESIGN; REQUIREMENTS CAN BE TRICKY! > > > > > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > 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: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson: pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
