Utracer 6 Calibration Part 12.4 Error returned above 300v

[Thomas Hussey]

Hi all,

I'm new here and need a little help. Rather than email Marie-José and Roland I figured I'd ask here.

I recently purchased a uTracer6 kit and I'm now at the calibration phase and hit a bit of a snag. 

Once I set everything in accordance with the instructions given in Part 12.4 and press "Measure Curve" the uTracer disconnects once it goes above 300v+.

I get the following generic errors:

1. Error, the result string from the uTracer was interrupted.
2. Fix connection with the uTracer and restart measurement.

I've re-traced my steps and re-soldered pins, I cannot find where I have made a mistake.

I've tried two power supplies both 19.5v and two serial "converters" one from DFRobot and the other from Waveshare that I use with my Compaq portable 286.

Any ideas would be greatly appreciated.

Cheers,

Tom

[Never Mind]

Tom

My personal experience with the utracer6...

Problems with COM issues when using a direct connect type of USB to TTL level Rs-232 connection with a uTracer were intermittent on my uTracer3+ and then become a plague with my uTracer6.

I then purchased a "real" FT232 IC based USB to real RS-232 voltage level with actual DB9 pin head-shell and then put the MAX232 IC back in place on the uTracer pcb.

That go rid of most of the com issues on my uTracer6.

Yes  "real" FT232 IC based USB to real RS-232 voltage level with actual DB9 pin head-shell cost a bit of money.

In my experience the uTracer6 seems both more susceptible than a uTracer3 to EMC and produces a significantly more EMI that can disrupt the cheep USB to TTL converters.

See also my post "Does your utracer "hang" more often then you would like?"

Good luck with your uTracer6.

Bob