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8753ES OPC?SING response time vs sweep time

Question asked by meirgen on Sep 7, 2008
Latest reply on Sep 8, 2008 by bhokkan
     I set 8753ES from 2 GHz to 6 GHz 401 frequency points IFBW=6KHz to measure S11 and S22. The sweep time for S11 or S22 is 128 ms displayed on 8753ES. The total sweep time should be 256ms. But , when I use NI SPY to check the time for OPC?;SING, it shows around 450 ms. Culd you tell me why it takes extra 200 ms? How to improve it? Thanks