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how to use Agilent E5061A test gain margin
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on Mar 25, 2009
on Mar 29, 2009 by odanzy
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Hello, I want to use E5061A to test switching regulator gain margin and pahse margin, do you know how to set the parameters? Thanks.
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Mar 29, 2009 7:25 AM
You may have a hard time measuring this with the ENA-L as the simplest setup for this measurement depends on having access to 2 or 3 measurement receivers and a separate signal source. The 4 port ENA (E5071C #4xx) or the PNA-L #xx5 where you have the ability to measurement the raw receivers and independently control the source port would have been a little better choice or possibly the 4395A, 4396B, or E5100A for even lower frequency coverage.
Check out the Application Notes linked below. The first was written generically so you don't see key sequences, but the setup is pretty well described. Pages 15 and 16 have the gain and phase margin measurements and configuration described, you could possibly use the ENA-L with some memory traces to use this techniqu, but it could take some time to make the measurement. The second was written around switching power supply characterization with the 4395A and these measurements are discussed on page 8.
Measuring Frequency Response with the LF Network Analyzer:
http://cp.literature.agilent.com/litweb ... 9799EN.pdf
PN4395-2: Switching Power Supply Evaluation:
http://cp.literature.agilent.com/litweb ... -7274E.pdf
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