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Hello,I have a PNA which works till 120GHz I use a 1mm to 1.85mm adapter to measure till 67GHz 1.85 SMA.
I need to measure a differential lines.
At first i got low causality about 50% so i played with the connector screwed unscrewed tried wipe of some spots i saw on the ground pad.
Then i saw that the causality got to almost zero and i cant improve it back to the values before.
I tried to changes cables to shorter ones.
I dont know if my 1mm to 1.85mm screwed proprly to the PNA.
I dont know how to place properly the SMA and how much presure to put on the screws so it will work properly.
Any help?
photos attached.
Thanks.
I need to measure a differential lines.
At first i got low causality about 50% so i played with the connector screwed unscrewed tried wipe of some spots i saw on the ground pad.
Then i saw that the causality got to almost zero and i cant improve it back to the values before.
I tried to changes cables to shorter ones.
I dont know if my 1mm to 1.85mm screwed proprly to the PNA.
I dont know how to place properly the SMA and how much presure to put on the screws so it will work properly.
Any help?
photos attached.
Thanks.
Last edited:
