Tester with driver/sensor circuit having programmable termination devices
US4168796A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1978 |
| Grant date | Sep 25, 1979 |
| Priority date | — |
| Expiry date | Apr 13, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31924
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Portable tester and method for testing a variety of printed circuit boards without utilizing specialized adaptor boards for rerouting input test signals and supply voltages from the tester to various pins of the board under test. A plurality of edge connectors have their respective pins connected to corresponding edge connector stake pins. Each edge connector stake pin is connected to or isolated from the corresponding driver/sensor stake pin by means of a switch. Each driver/sensor stake pin is connected to the input/output terminal of a programmable driver/sensor circuit. A main processor is utilized to store a test program and to transmit data and control information to predetermined driver/sensor circuits. A high speed processor coupled between the main processor and the inputs of the driver/sensor circuits includes a parallel-loadable shift register, an instruction register, an instruction decoder and control circuitry connected to the inputs of the driver/sensor circuitry. The high speed processor memory can store a bus-defining subroutine containing a sequence of data shifting instructions which shift a word in the shift register to the input of driver/sensor circuits specif…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.