| Products > Test Equipment |
| Teardown, Repair & Analysis of a Rohde & Schwarz FSH3 3.0GHz Spectrum Analyzer |
| << < (10/10) |
| tonyM:
SMD parts with marking "534" are SPDT switches up to 6GHz. In order to check if next sections are operational, you can bypass the input secton (Attenuator + Amplifier) by removing its first and its last SPDT switches, and soldering thin semi-rigid coaxial cable: |
| tonyM:
Only attenuator by-pass (by the same way it is originally done in TSMU-ver.2): |
| scopeman:
--- Quote from: G0HZU on August 10, 2015, 12:28:22 am ---I can also describe the signal path for the 6 GHz option if anyone wants to see it? --- End quote --- I realize that it has been a while but I would love to see the FSH6 even though I think I know how it works. I do have both a FSH3 and a FSH6 both with blown attenuator chips. It's been a while but I think that the one in the FSH3 that I have is a SOIC packaged part but I don't remember the part number. I think it was made by Macom. After I get my E4407B fully squared away perhaps I'll work on the two FSH's assuming I can find the attenuator chip for the FSH3. Thanks! Sam W3OHM |
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