hardcoded in software.
![Cheesy :D](https://www.eevblog.com/forum/Smileys/default/xcheesy.gif.pagespeed.ic.KPzuH4J-TG.png)
![Cheesy :D](https://www.eevblog.com/forum/Smileys/default/xcheesy.gif.pagespeed.ic.KPzuH4J-TG.png)
But he's right, it seems that it's harcoded on the OTP Rom of the DM1106EN.
I've done some tests with changing R48 value: the limitation is at 99.99A before "OL" on the 20A DC.
On my 4WD RC car with a lipo 2S 2200mAh battery, with the wheels not on the floor, I have mesured more than 30A on this 20A mode(the motor controller is rated to 80A) - Yes I can't run as fast as my RC car to hold the clamp meter near
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif.pagespeed.ce._hfWAz_QHO.gif)
Then, I have changed the R49 and saw this hardcoding limitation of 099.9A on the 100A before "OL"=>it's the same limitation as the
modded 20A but with less precision.
=>So my new test is that I've activated the 1000A mode
![Grin ;D](https://www.eevblog.com/forum/Smileys/default/xgrin.gif.pagespeed.ic.QVVz6XIT20.png)
on the 100A to test: I have a maximum of 9999A possible reading with the clamp and a R49 small value
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif.pagespeed.ce._hfWAz_QHO.gif)
(functions #1Ch DCA & #1Dh ACA + Calibration #56h & #57h)
(I'm not interested in having such A, I only need 200A)
I will post later if I find other interesting thing, but
it seems that with the unlocked 9999 points , the 100A mode is useless as the 20A mode can go up to 99.99A (in theory) and with more precision.