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Summit Microelectronics, Inc

Tech Support: Applications Note 24
Designing a NEBS-compliant Power System - SMH4804



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EDN ACCESS ARTICLE: DESIGNING A NEBS-COMPLIANT POWER SYSTEM
A complete power system guarantees the problem-free operation of telecommunications equipment and that equipment's compliance with applicable standards. Designing the complete power system requires expertise in areas beyond power conversion. [
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Designing a NEBS-compliant Power System - SMH4804

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High-voltages, as used in NEBS compliance testing, are extremely hazardous and can be lethal. Do not proceed with testing until all possible safety measures are taken. Be certain to wear eye protection and never perform testing alone.


Pre-Testing for NEBS Compliance
 
The UCS500 waveform generator applies waveforms to the DUT. Figure 2 displays the menu various test waveforms available from the UCS500 Selecting the 'Burst' waveform (F1, IEC 61000-4-4) generates a series of identical pulses with programmable amplitude, waveform shape, etc.

The UCS500 displays the selections as shown in Figure 3. Selecting the EN50082-1 (F5) test routine prepares the UCS500 to output the Burst Waveform. The Graphical Interface Window is used to set the test waveform characteristics, test duration and time interval between the pulse bursts (Figure 4).



Figure 2. UCS500 Front Panel 'MAIN MENU' display



Figure 3: UCS500 Front Panel 'Burst Standard Test Routines' display.

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SUMMIT Microelectronics, Inc. reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. SUMMIT Microelectronics, Inc. assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained herein reflect representative operating parameters, and may vary depending upon a user's specific application. While the information in this publication has been carefully checked, SUMMIT Microelectronics, Inc. shall not be liable for any damages arising as a result of any error or omission.

SUMMIT Microelectronics, Inc. does not recommend the use of any of its products in life support or aviation applications where the failure or malfunction of the product can reasonably be expected to cause any failure of either system or to significantly affect their safety or effectiveness. Products are not authorized for use in such applications unless SUMMIT Microelectronics, Inc. receives written assurances, to its satisfaction, that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; and (c) potential liability of SUMMIT Microelectronics, Inc. is adequately protected under the circumstances.

Revision 1.1 - This document supersedes all previous versions and covers Status Tracking Codes up to 10 and Windows GUI revision 2.39.3 and later. Please check the Summit Microelectronics, Inc. web site at
www.summitmicro.com for data sheet updates. 

 

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