Part 21 Report - 1996-321
ACCESSION #: 9603280046
Westronics (Registered Trademark)
A subsidiary of Thermo Instrument Systems Inc.
THIS IS A 10 CFR PART 21 NOTIFICATION
March 22, 1996
Nuclear Regulatory Commission
Document Control Desk
Washington, D.C. 20555
Subject: Firmware Bug, Enhanced Math package on Westronics Series 3000C
and 3200C chart recorders.
Westronics has discovered a firmware bug that exists in association with
the Enhanced Math option of the Series 3000C firmware, version 3.0A and
above and the Series 3200C firmware, version 2.0A and above.
The problem is caused by an out of control software pointer.
Manifestations of the bug include changing of printed Log scale
endpoints, 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 Trend Mode. If the instrument is
equipped with the Enhanced Math option, but the customer is not using
Logarithmic point types and Log scales, 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 our attention on or about March 12,
1996.
Westronics has been able to precisely determine which customers are in
possession of instruments configured with the required options and that
contain the affected firmware. The single noted license holder has
received notification:
Southern California Edison Serial Numbers: 3000C1004, 3000C1005,
3000C1006 and 3000C1007
Firmware Part Number: PI100072-01, -02, -03 and -04, Version 3.1A with
Option Decoder PI100117-01.
Customers may obtain updated firmware by contacting Westronics Recorder
Service department at 1-800-433-2184.
For further information, please contact the undersigned at (713) 348-
1780.
Sincerely,
Westronics Inc.
Chris Kelly
Quality Assurance Manager
Thermo Electron
Westronics Inc. o 22001 North Park Drive, Suite 100 o
Kingwood, Texas 77339-3804
Phone: 713/348-1800 o Fax: 713/348-1288
WESTRONICS (Registered Trademark) INTER-OFFICE MEMORANDUM
FROM THE DESK OF CHRIS KELLY
22001 NORTHPARK DRIVE, SUITE 100
KINGWOOD, TEXAS 77339-3804
FAX: 713/348-1293 PHONE: 713/348-1780
NO. OF PAGES: (including Cover Page)
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