Serial communication problem in Arduino Pro Mini

I have an Arduino pro mini, but I can not connect with another device that works in Stop Bit =2.
I changed my source program, but Arduino works in Stop Bit 1.

I use this code:
Serial.begin(1200, SERIAL_8N2); or Serial.begin(1200, 0x0E);

Thanks,

Post your code, and also make a pencil drawing showing all your connections and post a photo of the drawing.

The Pro Mini uses an Atmega 328 so it should be able to do what an Uno can do. Do you have an Uno, for testing?

A link to the datasheet for the device you want to connect with would also be useful.

...R