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Sovtest Fault Locators The devices were designed in order to meet as much as possible the demands of Clients and are intended for the great number of Customers. Different construction designs and various possibilities of the Fault Locators give the opportunity to introduce the device in several price categories. The devices operate on the basis of analogue signature analysis (ASA); sometimes this method is called VI (voltage – current). The essence of a method consists that the device transmits to the screen of the unit or PC the current-voltage characteristic (signature) of the circuit under analysis, and the signature is compared with reference. The reference signature can be obtained from the workable (golden) module (the device has two channels) or from the album of reference signatures provided with the device. Moreover, the device has its own memory for 128 signatures. Each signature is stored in the memory under certain number. Design variation with signatures stored in Flash or PC memory is also possible. For testing SMD-components on the device printed-circuit boards there is a RLC function - component type recognition and rating definition function. Test is performed without working voltage supply on the board, the device sends safe level and frequency signals required for signature construction. The signature analysis allows defining of all types of elements: analog, digital, electromechanical, etc. Signature comparison is automatic. Difference limit (tolerance) is set by operator. Integrated functional generator allows workability appreciating of such important components as transistors, thyristors, optocouplers, etc. without unsoldering them out of the circuit and without damaging its printed circuit tracks. Generator has a step control of frequency (2 levels) and polarity, and also it provides smooth adjustment of level and pulse duration. ASA method advantages: – Automation. The device provides automatic comparison of the tested module with the referenced one and reports about the result: DEFECTIVE / NON-DEFECTIVE.. – Universality. The device is suitable to diagnose any types of electronic components and their combinations. – User-friendly operation. The fault search can be carried out by personnel with average skill level. The electric diagram of the unit is not needed. – Safety testing. Testing without power supply on the tested and reference units – No intervention into the tested unit. When fault searching it is not required to unsolder the components from the board, printed circuit tracks remain undamaged. Test is performed without working voltage supply on the board; the device itself transmits safety level and frequency signals, which are necessary for signature construction. Operational modes: In real-time mode (direct comparison) the device compares two equal units – reference unit and unit being tested – and the result of the test is displayed on the PC monitor screen. In the rapid test mode the device tests multi-terminal components (in general, connectors and IC) using multiplexer with 128 channels. In each channel it sequentially scans the state of all outputs of the tested unit comparatively to GND, evaluating the coincidence / non-coincidence of the signatures in the given tolerance field. In the programming mode the device checks the tested unit according to the set testing program. Operator sets probe following the program orders, and the device makes a comparison automatically. Reference signature file allows not using second (reference) unit during the test. Since 1991 Sovtest ATE is known in the Russian Electronics market as a designer, manufacturer, and reliable supplier of the state-of-the art test equipment. Directions: - assembly equipment - design and supplies of test equipment and software - climatic chambers and vibration-testing systems - wire / cable processing equipment and technologies. In 2002 the Company obtained the Certificate for a Quality Management System Compliance with the requirements of the International Standard ISO 9001:2000. In 2004 the Company became a member of the IPC (International Association Connecting Electronics Industries). All supplied equipment is provided with technical support, warranty and post-warranty service for its full operating life.
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