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Test Equipment / Siglent SSA 3021X... Ooops
« Last post by Joel_l on Today at 12:03:54 am »Hi,
I think I accidentally overloaded the input to my SA one too many times. My input impedance is no longer 50 Ohms. It still functions sortof.
I took the input board out and started looking around. I saw a 49R9 resistor which I assume is the termination resistor, it actually measures fine. I it looks like there are some clamping diodes on the input pat and they seem fine. the input cap measures at 1uF, seems OK. Nothing looks like it got toasty.
The first IC in the input path is U1 a 956p, the 49R9 resistor is after that component in the path. Makes me wonder if that is the part I damaged.
I can't find any info on what that part is, anyone here know? Has anyone found schematics for this SA?
Thanks
Joel
I think I accidentally overloaded the input to my SA one too many times. My input impedance is no longer 50 Ohms. It still functions sortof.
I took the input board out and started looking around. I saw a 49R9 resistor which I assume is the termination resistor, it actually measures fine. I it looks like there are some clamping diodes on the input pat and they seem fine. the input cap measures at 1uF, seems OK. Nothing looks like it got toasty.
The first IC in the input path is U1 a 956p, the 49R9 resistor is after that component in the path. Makes me wonder if that is the part I damaged.
I can't find any info on what that part is, anyone here know? Has anyone found schematics for this SA?
Thanks
Joel