CoherentSystems
Trade: Coherent Systems
Keith,
Do you have answer for us yet?
The answer is clearly in your avatar for someone who regular uses jitter and eye pattern measurements it is pretty obvious, so an answer who be appreciated.
Updated
So you have posted a print out from the measurements taken from a test sequence from the piece of equipment using a USB2 interface test programme at the end of production before being QA passes it fit for consumer land. Not what I asked for Keith at all.
For example fora USB3 high speed interface measurement, you would need a much higher specification of the test equipment with over 8Ghz BW coupled with a sample rate nicely over 10G/s to capture that 5Mps signal rate. You would be looking around the £45K+ mark for that level of capability. The Lecroy machine it was measured on are excellent, personally I use a mix of R&S and Tektronix which also excellent. However I do not bang on about at every opportunity.
My question was just by looking at the eye diagram it self what does it indicate to you, also could using a histogram in conjunction with said eye diagram give us any extra information as to the outcome at all?
As Graham intimated, you use measurements to undermine other equipment's capabilities, what about your own capabilities in this area of test and measurement and genuine relevancy to said product (s) and how they REALLY sound ?
Instead of posting the report sheets, how-about being a little more constructive realism with your constant self promotion and defection techniques for avoiding questions
Do you have answer for us yet?
The answer is clearly in your avatar for someone who regular uses jitter and eye pattern measurements it is pretty obvious, so an answer who be appreciated.
Updated
So you have posted a print out from the measurements taken from a test sequence from the piece of equipment using a USB2 interface test programme at the end of production before being QA passes it fit for consumer land. Not what I asked for Keith at all.
For example fora USB3 high speed interface measurement, you would need a much higher specification of the test equipment with over 8Ghz BW coupled with a sample rate nicely over 10G/s to capture that 5Mps signal rate. You would be looking around the £45K+ mark for that level of capability. The Lecroy machine it was measured on are excellent, personally I use a mix of R&S and Tektronix which also excellent. However I do not bang on about at every opportunity.
My question was just by looking at the eye diagram it self what does it indicate to you, also could using a histogram in conjunction with said eye diagram give us any extra information as to the outcome at all?
As Graham intimated, you use measurements to undermine other equipment's capabilities, what about your own capabilities in this area of test and measurement and genuine relevancy to said product (s) and how they REALLY sound ?
Instead of posting the report sheets, how-about being a little more constructive realism with your constant self promotion and defection techniques for avoiding questions
