| Products > Test Equipment |
| hp 8595E YTF problem (high band loss) |
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| Tardz:
Hi, I have a problem with my 8595E, the 2.9-6.5 GHz band has too much insertion loss, around 15dB flat. The low band works correctly. I know that this seems to be a common problem, and the question is: is it the RF switch or the filter. If the problem is the RF switch, there is nothing to do, but if it is the adjustments, is it possible to correct it. I have attached the image of the open YTF, we can see that no sphere is centered, is this normal for a YTF... the bw for a frequency configured at 5GHz is 29 MHz, Q=172 and insertion loss of 31.7dB. Normally the signal should have had a loss of 16.5±2.5dB, from the input to the high band output of the YTF. This measurement is made after a PRESET of the 8595E, FREQ=5GHz, SPAN=0...and the test is done on a 6GHz 8753ES VNA (the input attenuator of the 8595E is therefore at 10dB). Has anyone had this kind of problem managed to resolve it? Regards Yves |
| lugaw:
Someone tried fixing YTF like yours that have the spheres moved and it seems to have worked. https://www.simonsdialogs.com/2018/12/hp-5086-7803-yig-tuned-filter-and-switch-sytf-details-and-adjustment/ |
| Tardz:
Thanks for the information, it will be very useful to me. |
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