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Part 21 Report - 1996-320

LICENSEE: WESTRONICS SITE: WESTRONICS EN NUMBER:30153 DOCKET: EVENT DATE: 03-12-96 RX TYPE: EVENT TIME: 00:00 VENDORS: NOTIFY DATE: 03-22-96 EMERGENCY CLASS: N/A REGION: 4 STATE: TX TIME: 14:38 OPS OFFICER: LEIGH TROCINE 10 CFR SECTION: CDEG 21.21(c)(3)(i) DEFECTS/NONCOMPLIANCE 10 CFR PART 21 NOTIFICATION REGARDING THE DISCOVERY OF A FIRMWARE BUG THAT EXISTS IN ASSOCIATION WITH AN ENHANCED MATH PACKAGE ON WESTRONICS SERIES 3000C AND 3200C CHART RECORDERS WESTRONICS DISCOVERED A FIRMWARE BUG THAT EXISTS IN ASSOCIATION WITH THE ENHANCED MATH OPTION OF THE SERIES 3000C FIRMWARE (VERSIONS 3.0A AND ABOVE) AND THE SERIES 3200C FIRMWARE (VERSIONS 2.0A AND ABOVE). THIS PROBLEM IS CAUSED BY AN OUT OF CONTROL SOFTWARE POINTER; AND MANIFESTATIONS OF THE BUG INCLUDED CHANGING OF PRINTED LOG SCALE END POINTS, CHANGING OF PROGRAMMED POINT OUTPUT SCALES, THE TIME OF 20:XX:XX PRINTED AS 6C:XX:XX IN MARGIN LOGS, AND THE RANDOM SUPPRESSION OF POINT DATA FROM LOGS AND THE DISPLAY. THE NOTED PROBLEMS ARE TRIGGERED SPECIFICALLY BY THE PROGRAMMING AND TRENDING OF LOGARITHMIC POINT TYPES AND LOG SCALES WITH THE RECORDER IN THE TREND MODE. IF THE INSTRUMENT IS EQUIPPED WITH THE ENHANCED MATH OPTION AND IF THE CUSTOMER IS NOT USING THE LOGARITHMIC POINT TYPES AND LOG SCALES, THEN THE NOTED PROBLEMS WILL NOT APPEAR. THE ENHANCED MATH OPTION REQUIRES THE PRESENCE OF THE PI100117 OPTION DECODER 'PROM.' INSTRUMENTS NOT ORDERED FROM THE FACTORY WITH THE ENHANCED MATH OPTION DO NOT HAVE THE OPTION DECODER 'PROM' INSTALLED AND WILL NOT EXPERIENCE THE NOTED PROBLEMS. THE PROBLEMS THAT LED TO THE DISCOVERY OF THIS BUG WERE BROUGHT TO THE ATTENTION OF WESTRONICS ON OR ABOUT MARCH 12, 1996. WESTRONICS HAS BEEN ABLE TO DETERMINE THAT SOUTHERN CALIFORNIA EDISON (SAN ONOFRE) IS IN POSSESSION OF INSTRUMENTS THAT ARE CONFIGURED WITH THE REQUIRED OPTIONS AND THAT CONTAIN THE AFFECTED SOFTWARE. THE SINGLE NOTED LICENSEE HOLDER HAS RECEIVED NOTIFICATION BY WESTRONICS. (REFER TO THE HOO LOG FOR THE CONTACT'S ADDRESS AND TELEPHONE NUMBER.)

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