RJR posted:Quaere: As I understand this gizmo, if the TIU signal voltage falls below a certain point, the LED flashes. If this could be done, wouldn't it also be relatively feasible to have it provide an output voltage readable with a voltmeter or a milliammeter, so one could have an idea of relative signal strength????
It's possible to do this, but it's tricky and won't be $10 any more. The DCS packets are short and infrequent so it's hard to turn them into a DC voltage large enough to measure with good resolution. I recorded an add engine DCS exchange and rectified it in spice with an ideal diode. The whole exchange gets you only like 20mV of DC. That means you need sampling-and-hold circuits to hold the voltage long enough to measure it (the packet it too short!) as well as amps and filtering.
GRJ is talking about a 4 LED system (red, yellow, green, blue?) that is similar. Again it's possible and makes sense but needs lots of design work.
The version at the top is just the very-economical and simple to use yes or no device which is what some folks were asking for. The high end version is like the AGHR T-train.
