Solution:

The character times for several different baud rates are selectable on switch positions 1 through 5. If you need a different timeout than what is provided, R10 can be removed and replaced with a different value R9. This table shows different timeout values for the switch positions as well as R9 replacement values. Timeout Selection: Timeout selections are equal to one character time at the indicated baus rate. Setting the converter to 9600 will generally work at 9600 and higher baud rates. In RS-422 mode, timeouts are not required.