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Test Equipment / Re: Siglent SSA 3021X... Ooops
« Last post by Joel_l on Today at 06:30:55 pm »Mine is a little different than that, I have 4 more diodes where the signal enters the first switch.
So I think I found two things going on, one really muddied the other. Looks like my attenuator is bad and is causing the high SWR on my TX. This does not explain the initial high SWR with my antenna analyzer, I did not use my attenuator with that.
I went back and looked with my signal generator again. I fed a -20dBm signal in and went through the SA attenuator settings. The reading never changed from -20dBm only the noise floor moved up and down, the SA always measured -20dBm.
Those switches are not very expensive. I think I will just replace those. I hope the programable attenuator at the end is OK, not as easy to find.
So I think I found two things going on, one really muddied the other. Looks like my attenuator is bad and is causing the high SWR on my TX. This does not explain the initial high SWR with my antenna analyzer, I did not use my attenuator with that.
I went back and looked with my signal generator again. I fed a -20dBm signal in and went through the SA attenuator settings. The reading never changed from -20dBm only the noise floor moved up and down, the SA always measured -20dBm.
Those switches are not very expensive. I think I will just replace those. I hope the programable attenuator at the end is OK, not as easy to find.