Browse Prior Art Database

Error Environment Detection System

IP.com Disclosure Number: IPCOM000085624D
Original Publication Date: 1976-May-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 3 page(s) / 35K

Publishing Venue

IBM

Related People

Boyd, RE: AUTHOR [+4]

Abstract

This arrangement may be utilized to establish the coincidence between errors in a central processing unit and various environmental conditions that might contribute to such errors, particularly when they are highly intermittent. The arrangement shows by lamp indicators the coincident occurrences of machine errors and environmental events, and can also be used to actuate miniature pen recorders to provide a history of multiple occurrences over a relatively long period of time.

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Error Environment Detection System

This arrangement may be utilized to establish the coincidence between errors in a central processing unit and various environmental conditions that might contribute to such errors, particularly when they are highly intermittent. The arrangement shows by lamp indicators the coincident occurrences of machine errors and environmental events, and can also be used to actuate miniature pen recorders to provide a history of multiple occurrences over a relatively long period of time.

An input terminal 3 is connected to the driver 5 to receive any machine check input which indicates a malfunction in the central processing unit (CPV) to be checked. This input, when it appears, will enable driver 5, thereby providing an output to a first indicator lamp 7, and a signal to the input of a single-shot 9, having a predetermined duration output which, via a driver circuit 11, supplies an output signal to terminal 13 which may be used to actuate a pen on a recording mechanism. An output signal is also provided to a bus 15, having connections to one of the inputs of a plurality of AND circuits, such as AND circuit 17.

One or more condition detectors are also provided, such as power line transient detector 19, the details of which are not shown but which is arranged to provide an output at a terminal 21 when a power line transient occurs that exceeds a predetermined threshold. Another detector 23 is arranged to provide an output to a terminal 25 when an electrostatic discharge is detected, or a radio- frequency field is detected having a magnitude greater than a predetermined threshold. An additional detector 27 detects changes in DC and AC operating voltages supplied to the central processing unit under test, and provides an output t...