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

Adrian!OGR Forum Member

Dave45681 posted:
Thanks for posting this!
So to set the trim pot, do we set it up on a TIU output we have reason to believe is good and just adjust the pot until the LED starts blinking? Or is there a better method during construction (maybe applying a DC signal directly to the B/C node of the circuit before installing the filters on the front end?)?
Thanks for all the good discussions you have been posting on the topic.
-Dave

Hey!

Yup, the trimpot just sets how many volts of dcs signal you need before the light flashes. If you turn it all the way up it’ll flash at 2.5V. In the middle it would flash at 5V. Near the top maybe 50V or more. I think it’s easiest to just tune it against a good channel like you suggest. Tune it to the point right where it barely flashes on a working channel, then leave it set there as your threshold of good and bad for future tests.

7/15/182:21 PM

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