TIU L not recognized by WIU When Fixed Power 2 Applied

Bob,

For starters, the TIU gets its power for itself via either the Aux. Power port (preferred) or from Fixed #1 Input. In order for any other channel, Fixed #2 or either variable channel, to work, the TIU must also be getting power for itself.

If the red LED inside the corner of the TIU nearest Fixed #1 Input isn't lit, the TIU will not be present when viewed from either the DCS App or the DCS Remote.

This and a whole lot more about DCS is all in MTH’s “The DCS Companion 3rd Edition!" This book is available from many fine OGR advertisers and forum sponsors, or as an eBook or a printed book at MTH's web store!

This and a whole lot more about DCS WiFi is all in MTH’s “The DCS WiFi Companion 1st Edition!" This book is available from many fine OGR advertisers and forum sponsors, or as an eBook or a printed book at MTH's web store! Get the free TMCC & Legacy Addendum here!

Thanks for the quick reply Barry.  Love your book by the way!

The TIU does have separate power via the Aux Power and the red light is on.

I just tested it again and found that if I connect only one input power it can find an engine regardless if I an using Fixed 1 or Fixed 2 input power, works on Fixed out 1 and Fixed out 2 if done independently.  However, if I connect both power sources at the same time it will not find an engine, error - cannot find a TIU.  Strange???  I checked the power phasing and they are in phase it appears.

Maybe try using the same  power supply for fixed 1 & 2 along with the aux power.

Bob,

It sounds as if you may have a center rail connection between the two TIU channels. That could cause the DCS signal to degrade.

This and a whole lot more about DCS is all in MTH’s “The DCS Companion 3rd Edition!" This book is available from many fine OGR advertisers and forum sponsors, or as an eBook or a printed book at MTH's web store!

This and a whole lot more about DCS WiFi is all in MTH’s “The DCS WiFi Companion 1st Edition!" This book is available from many fine OGR advertisers and forum sponsors, or as an eBook or a printed book at MTH's web store! Get the free TMCC & Legacy Addendum here!

Barry and Gregg,

Tried both of your ideas and it still does not work....  I disconnected everything from the TIU except Aux Power and the  WIU USB cable.  I then used one power supply to feed both Fixed 1 and Fixed 2, will not see the TIU.  I have no wires connected to the output side, incase Barry's idea was the issue.  Within the app I went to add engine, no TIU found.  Or I go into Advanced Features, System Settings, TIU Settings = No Active TIU found.  If I disconnect input power from either Fixed 1 or Fixed 2 it works fine.  Bad TIU? Bad WIU?

Do you have a dcs remote as well? same thing?    I don't have WIU. 

Bob,

You either have a defective TIU, some anomaly in the layout tracks or wiring, or there's something that you aren't telling us.

I was able to resolve the issue!  I re-flashed the WIU with 1.1 and it resolved the issue.  Not sure why that resolved it but it did work.