| Products > Test Equipment |
| Video Teardown, Analysis and Repair of an Agilent E4407B ESA-E Spectrum Analyzer |
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| dentaku:
I would be interested in seeing a video explaining PLLs. If you haven't watched Alan W2AEW's video on PLL already I would suggest you don't so you're not influenced by his really excellent demonstrations then see how your method of explaining it differs. then you can watch the W2AEW video after you've done editing yours:) |
| ivaylo:
Yes, don't change anything. Your videos are excellent! |
| HighVoltage:
--- Quote from: Hugoneus on October 07, 2014, 12:41:25 am --- Another time, a student put 8V on the input of a 70GHz sub-sampling scope module, killing it instantly. --- End quote --- Thanks for answering my previous questions. One has to wonder, why HP would not install a DC block at the manufacturing level. Why is there even a DC input path open, if it is so dangerous for the instrument? |
| Hugoneus:
--- Quote from: HighVoltage on October 07, 2014, 08:11:42 am --- --- Quote from: Hugoneus on October 07, 2014, 12:41:25 am --- Another time, a student put 8V on the input of a 70GHz sub-sampling scope module, killing it instantly. --- End quote --- Thanks for answering my previous questions. One has to wonder, why HP would not install a DC block at the manufacturing level. Why is there even a DC input path open, if it is so dangerous for the instrument? --- End quote --- Well, for the PXA/PSA with a 3Hz low-frequency limit, they have no choice. There is no way to meet 3Hz low cut-off and 50GHz high cut-off simultaneously. As for the scope module, it has to be DC coupled, because it is suppose to measure DC offsets. It was just rated to only 5V and not 8V. |
| vaualbus:
Do you know how on the new agilent/keysight spectrum analyzer can achive a range from 3Hz to 50Ghz? What could are the differences between the SA you bought and the new agilent models? Best regards, Alberto. |
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