Arduino Mega2560 SERIAL_7E1

I have a problem.I want to use Arduino to commuicate with a device by RS232.

the device RS232 setting: Baud Rate:9600, Data bit:7, Parity bit:even, Stop bit:1

my program is below

void setup()
{
Serial.begin(9600,SERIAL_7E1);
}

void loop()
{
Serial.println(“asd”);
delay(500);
}

I download this program to my arduino and it finished.
I open the terminal to check my test.
It don’t show the asd, it show garbled message.

Anyone know this problem,help me to solve it.

Thanks you.

I open the terminal to check my test. It don't show the asd, it show garbled message.

The IDE serial monitor communicates using 8N1 so you have to connect your special device that knows how to deal with 7bit communication.