I am having a Lecroy differential probe and trying to measure a LVDS signal. This is the Reference Manual which I am referring to as a guide.
My differential probe tip/lead model number : DX20 - SP/SI/QC. Please see its specification in the table present on the document. I am using the WL-PBUS2 Probus2 cable assembly with the D420-A Differential amplifier.
But can someone tell me what are circled in red items on the differential probe tip/lead assembly?
There seems to be 2 resistors in series with the +ve and the -ve differential line and one resistor across it. I tried to measure their values in multimeter. But it think, there is a layer of coating above those components because of which I am not able to measure their values using multimeter. I did not want to scratch the coating and try fearing it might damage the probe which is very expensive.
Can someone tell me what are the 3 components in the above image? I search and tried to read in the attached manual, but unable to find what those are and how do they help in measuring a differential signal.
Below is my setup :
I am connecting the above differential probe across the vias 1 and 3 to measure the LVDS Signal. I am getting random waveform which I know it is because of the termination mismatch at the probe shown above.