| Electronics > Repair |
| Rohde Schwarz FSP IF Board Failure |
| (1/1) |
| Testtech:
I am working on a new-to-me Rohde Schwarz FSP spectrum analyzer that has a failure on the IF board. The self test display is below. Anyone have experience with this model? I have the service manual, but no schematics, and the block diagram is of little help. It appears that the measurement circuitry on the IF board isn't working, or perhaps a logic problem. The main PSU is fine. |
| Harry_22:
Hi! I found FSP in a good condition:) I'll have a look. |
| DaJMasta:
Don't have experience with this unit, but it sure looks like the ADC, its reference, or its Mux is dead. You should probably run a test to see if the board itself is operational, and if it's capable of running at least some of its functions, it is probably a self check measurement failure. |
| Harry_22:
Hi! I put 2.2k resistor between REFADJ (Pin12) and Gnd. Self-test results are now similar. Check the capacitor on pin12 first. As far as I remember, there are several MEGs between pin12 and Gnd. |
| Harry_22:
Hi, Testtech! Do you have any further info? Please don't hesitate to contact me. |
| Navigation |
| Message Index |