Browse Prior Art Database

Control of Antenna Effect on Error Injection Probe

IP.com Disclosure Number: IPCOM000113877D
Original Publication Date: 1994-Oct-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Covalt, TJ: AUTHOR [+4]

Abstract

A method for reducing antenna effects in an automated fault injection system is disclosed. The antenna effects are reduced by the use of an instrumented probe. The instrumented probe is used as a transmitter for the injected signal.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Control of Antenna Effect on Error Injection Probe

      A method for reducing antenna effects in an automated fault
injection system is disclosed.  The antenna effects are reduced by
the use of an instrumented probe.  The instrumented probe is used as
a transmitter for the injected signal.

      The method is a circuit card (Fig. 1) that had high impedance
close to the point at which the fault is to be applied.  This
eliminates the antenna effect.  The Error Signal ((3) Fig. 1) and
Enable ((4) Fig. 1) are used to switch the control circuit from high
impedance to the desired voltage level.

      The circuit card is mounted on the same carrier as the probe.
The output of the circuit card is wired directly to the probe.  The
distance of the circuit card output to the probe needs to be as short
as
possible.  The impedance of the circuit and the short wire work
together
to reduce the reflected waves and the resonance characteristics.

      Fig. 1 shows the electrical implementation of the circuit card.
Fig. 2 shows the mounting of the circuit card ((4) on Fig. 2) on an
X-Y Table.