For Sure...TVI 920 emulation. If you use any other, you will get weird characters. If you do get in, you can go to the "B" screen and change the Port baud rate. Press "P" in the "B" screen and this will take you there. Note that if you have an additional RS232 board installed, you will have more than one port. Look for the * when you increment through the ports. When you see it, you are using that port.