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WinMLS 2000 Forum

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Subject difference in time delays

Date Thu Dec 16 2004 15:07
Author Rhonda Wilson (rhonda.wilson@meridian.co.uk)

I am using WinMLS with a LynxOne sound card to do measurements that use the digital output and the analogue input. I am doing separate measurement of different channels of the device under test.
When I use the MLS signal the relative delays between the channels measures correctly. When I use the swept sine wave the delay on one channel is coming up far too long compared to the other channel. The difference corresponds to more memory than the DUT has. The measurements are very repeatable but the time delay seems very wrong.

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