Re: Insertion delay needed for BNC-BNC couplers UG491A/U (M-M) and UG914/U (F-F)
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The drop end of sweep is a free bonus. The cause has been mentioned to Tom but he has no clue. Only seen for such extreme fin resolution as 0.1ps/div.
Attached is Female Open measurement with port delay set to calDelay/2
100 point trace. What I've noticed is last point, 100MHz, always goes into the weeds. Others noticed this? Blip near 45MHz is sound card frequency.
On 5/23/20 11:59 AM, John Oppenheimer wrote:
> Hi Kurt,
> On 5/23/20 10:54 AM, Kurt Poulsen wrote:
>> The internal structure of the female female adaptor is also not ideal
>> as there sare sections not filled with PTFE
> Yes, had noticed that yesterday. Female Open Delay without inside PTFE
> is -177.82 where as using an open with internal PTFE (031-320-RFX no
> pin) is -187.6
Best 73 de Kurt de OZ7OU