Browse Prior Art Database

Functional Exerciser Circuitry

IP.com Disclosure Number: IPCOM000037075D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 5 page(s) / 148K

Publishing Venue

IBM

Related People

Austin, WL: AUTHOR [+4]

Abstract

This article describes a functional exerciser card for an automotive technician terminal which contains all automotive electrical functions (analog, digital) on the one card.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 71% of the total text.

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Functional Exerciser Circuitry

This article describes a functional exerciser card for an automotive technician terminal which contains all automotive electrical functions (analog, digital) on the one card.

Fig. 1 illustrates a technician terminal which is used for diagnostic testing of automobiles in which the technician terminal card (TTC) disclosed herein is utilized. The TTC provides the following functions on four channels: Seven programmed resistances to test 3 ohmmeter

ranges.

(Image Omitted)

Five programmed voltage levels to test 3

voltmeter ranges.

Voltage pulses to test pulse-width measurement.

Measures voltage sourcing capability of the

automobile (product) being tested.

(Image Omitted)

Measure current sourcing capability of the product.

Tests over current shutdown protection on product.

Transmits serial pulse trains to the product and verifies returned pulse trains.

Transmits serial pulse trains to the product and

verifies returned pulse trains.

Three transmission rates: 8192, 80 and 160 BPS.

(Image Omitted)

Fig. 2 shows the controller which is an industrially hardened personal computer (PC). Fig. 3 shows the PC planar board. Fig. 4 shows the analog and digital TTC that would be inserted into the planar board. This allows technician terminals to contain essentially a miniaturized TTC.

Via software commands the terminal would address the TTC. The TTC would have all relay resistive networks, A/D and D/A converters plus logic, as shown in the detailed vie...