Originally Posted by ConnecTEDDD
Hey, SS + DrFaxe, do you have more data about testing your meters with or without linear low loise power supplies?
I only can speak for the i1pro2 and my PSU. Yes, there is a slight improvement in repeatability. I never used the stock cable for the i1pro2 and immediately switched to a HQ 1.5m USB cable. Just with this cable the difference in repeatability is 0.0002 - 0.0003 for all xy of RGB @100%, except y of green, this is 0.0005 - 0.0006. Guessing the small fluctuations are caused by the plasma TV.
With my PSU the difference in repeatability of all
xy of RGB @100% are within 0.0002 - 0.0003, so y of green improved.
But I can not say at the moment whether this is releated to the ripple noise or the rock stable voltage, knowing that the i1pro2 is quite power hungry.
Have to do some more testings about that, but less time due to heavy work load.
I'm still improving the PSU to push the ripple noise level in the middle uV range and completely skipped my old design. I had to use shielded housing and cables and keep the wiring on the PSB circuit as short as possible, so switched to a double layer PCB design.
But the cost is still <50% of the Aqvox PSU and I have two 5V / 3A outputs.
the meter setup I use works like charm for profiling. Aligning the meters to the TV takes less than 1 minute and meters can be switched within 5s.
In 8 of 10 times I have a good profile on the first attempt, 0.0001 - 0.0002 difference in xy, max. 2 attempts needed. I'm very happy with that and it was worth the money for sure.
Have You tried the rails for Your meters?