Tag Archives: radio frequency interference

Calibration of the Intoxilyzer 8000, O.A.C. 3701-53-04


The revised Ohio Administrative Code section 3701-53-04 incorporates the new rules for calibrations of the Intoxilyzer 8000. See O.A.C. 3701-53-04(B) as set forth below.  The “new” standards “automatically perform a dry gas control test before and after every subject test and instrument certification using a dry gas standard traceable to the national institute of standards and technology (NIST).  The dry gas results “are valid when the results are at or within five one-thousandths (0.005) grams per two hundred ten [Read the full post. . .]

Radio Frequency Interference

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Radio frequency interference (RFI) or electromagnetic interference can arise when radio signals transmitted in proximity to a breath testing instrument are amplified in a way indistinguishable from electronic signals generated by the instrument during an analysis.  Most instruments are shielded from such interference, have RFI detectors that prevent testing if significant RFI sources are present or both.  Breath testing protocols typically prohibit the use of handheld transmitters in the proximity of the instrument while it is being [Read the full post. . .]

Dayton DUI Law: Explaining Error Messages and Their Importance

Ohio utilizes the BAC DataMaster breath test machine to measure the blood alcohol content of a suspect arrested for driving under the influence. The BAC DataMaster is a product of National Patent Analytical Systems, Inc. (NPAS) located in Mansfield, Ohio.  National Patent Analytical Systems has certified Charles Rowland in the operation, diagnostic verification and calibration of the BAC DataMaster Breath Alcohol Testing Instrument, the most commonly used breath testing instrument in Ohio for DUI arrests.  The BAC DataMaster breath [Read the full post. . .]