Q&A Forum
I'm having some broad issues.
If I put the signal wire onto a plug lead, my HDMI interface from laptop to boom mounted screen, drops in and out and goes crazy.
I'm running the following
Your dyno control unit (blue box)
yourdyno eddy brake power supply
Innovate lc1 wideband controller (wired through aux1)
Dtech rpm adaptor (wired into rpm2)
I have two small 12v power supplies.
One is wired to the lc1, the other is wired to the dtech.
If I wrap my signal wire to the plug lead of the vehicle, as per the dtech instructions, the HDMI just starts fritzing out to the point it is unusable.
Has anyone else had issues with HDMI connections and interference?
Any ideas what I can try?
Hi,
OK, it can be as easy as a bad HDMI cable. If not, first check is whether the two power supplies (why two?) are isolated. They shall be, otherwise the YourDyno unit gets ground from two places and a large ground loop is created which will pick up all sorts of electro magnetic signals.
If that is ok, then disconnect everything from the YourDyno box and connect back one by one until you see the problem.
Cheers
I'm going to try a seperate HDMI cable first up as a simple test.
But the ground loop sounds more realistic.
Im running two smaller power supplies as I wasn't sure if the dtech and the wideband controller should be powered separately.
I have a three phase circuit that runs to the dyno cabinet/board.
On that board it has 3 phase that heads out to a fan unit and then a single phase (through breakers) to a dual GPO in the cabinet for the 12v units and an external GPO and also into the yourdyno power supply unit.
The two 12v supply units are plugged into the GPO.
Those then supply the wideband and the dtech.
The laptop was not plugged into power.
The monitor I'm using is powered from the external GPO.
I'm guessing that when I give the dtech a signal, the resulting 'switch' of the rpm pulse is feeding through this whole setup and causing the drop on/outs as interference?
Its way beyond me from a troubleshooting point though, so any ideas on fix?
It's been suggested that I may have a ground loop.
But I'm not sure how I can avoid that
Follow the suggestions I gave and let us know what you find. The cable or monitor or PC is the most likely cause I think, I have never heard of a problem like this. But in any case, make sure the two power supplies are isolated and reduce to one power supply (or 12V battery) if you can.