Reply to "Design of a $10-20 DCS-TIU Port Tester Tool?"

kanawhaOGR Forum Member SUPPORTING MEMBER

I ordered a kit from Tom and just finished putting it together. Calibrated it with the "shorting screwdriver method" and it appears to be working correctly. First I ran a couple of engines on the layout to check signal strength and pretty much got 10's all around. Then I checked each TIU channel with the checker, first with the TIU hooked to the layout and then with the TIU disconnected from the layout. In all cases the green light flashed, never got the red light to flash.

So is this telling me my signal strength is somewhere between 5 and 10 volts? I understand calibrating the tester with a known good TIU so the pot can be adjusted to just make both leds flash, but how do you know if you have a "good" TIU? Will a new, just out of the box TIU always have a 10 to 12 volt signal? Is there any other way to calibrate it to 10 volts?

I would also like to thank Adrian, Gunrunner, and Tom for researching, designing, and putting the tester kits together.

Ken

1/23/1911:17 AM

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