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resources:eval:user-guides:circuits-from-the-lab:cn0568 [15 Nov 2021 16:33] – Removed un-needed files and links that are included already in the CN page. Kieran Barrettresources:eval:user-guides:circuits-from-the-lab:cn0568 [15 Nov 2021 16:35] (current) – old revision restored (15 Nov 2021 16:33) Kieran Barrett
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 6. In the spectrum analyzer instrument, set up a phase noise measurement.   6. In the spectrum analyzer instrument, set up a phase noise measurement.  
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 7. Table 1. below lists the test frequencies for each part variant. On the evaluation software, in the ‘VCO Out’ box, input the first frequency for the variant used and press ‘Update Frequency’ button.  7. Table 1. below lists the test frequencies for each part variant. On the evaluation software, in the ‘VCO Out’ box, input the first frequency for the variant used and press ‘Update Frequency’ button. 
 {{:resources:eval:user-guides:circuits-from-the-lab:updatefrequency.png|}} {{:resources:eval:user-guides:circuits-from-the-lab:updatefrequency.png|}}
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 8. Wait until the instrument locks to the output frequency and displays the phase noise profile on screen. Note the phase noise at offsets of 100kHz, 1MHz and 10MHz.  8. Wait until the instrument locks to the output frequency and displays the phase noise profile on screen. Note the phase noise at offsets of 100kHz, 1MHz and 10MHz. 
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 9. Table 2. shows the limits of the maximum phase noise at a particular offset frequency for each variant. Boards with phase noise higher than these limits are deemed to be failures. 9. Table 2. shows the limits of the maximum phase noise at a particular offset frequency for each variant. Boards with phase noise higher than these limits are deemed to be failures.
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 10. Repeat steps 7-9 for each test frequency in Table 1. for the board variant being tested.  10. Repeat steps 7-9 for each test frequency in Table 1. for the board variant being tested. 
  
resources/eval/user-guides/circuits-from-the-lab/cn0568.txt · Last modified: 15 Nov 2021 16:35 by Kieran Barrett