Reply to "Adventures in TMCC & Legacy... Trying to master the 455Khz track signal. I've built the test car, and it is finally working.."

cjackOGR Forum Member DIGITAL SUBSCRIBER

gunrunnerjohn posted:
Did you move the lead on the meter to the current hole? You didn't provide a shot of the whole meter, so I can't tell where you've got the leads connected. You should program the R2LC so you can control it and turn the light on/off as Stan suggests, then you know for sure the rig is working and receiving.

What's the input impedance of these meters? It seems y'all are developing a voltage across the 50K resistor and then shunting it with an ammeter. So...if the input impedance of the meter is 10 Meg or so (typically), you can use the voltmeter. Max reading from the data sheet is 60uA or 3 vdc across the 50K.

Anyway y'all had me confused.

And y'all are making me want to build one of these...

2/17/168:45 PM

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