RIGOL 
 ©   2007  RIGOL  Technologies,  Inc. 
  User‟s Guide for DM3000 Series 
Set Up RS-232 I/O Parameters 
Choose RS-232 (serial data interface) interface. Proper configure the baud rate and 
parity to make parameters the same as that settled in your computer. Make sure the 
connection  line  is  unbroken.  The  configuration  is  saved  in  inviolate  memory  and 
shown in according menu. 
Press     I/O  RS232, enter the menu shown below:   
 
Figure 2- 40 
 
                    Table 2- 28 RS-232 Parameter Function Menu Explanation 
Set  RS-232   baud  rate  as  1200, 
2400,  4800,  9600,  19200,  38400, 
57600 or 115200. 
The parity check include: None, Odd 
check, and Even check. 
Save all  changes,  back to  a  higher 
level menu. 
 
Baud rate: 
Proper configure the baud rate and parity to make parameters the same as that 
settled in your computer.   
Available baud rate values are 1200, 2400, 4800, 9600, 19200, 38400, 57600 and 
115200. The default is 9600. 
Parity: 
Proper configure the parity to make it same as that settled in your computer. The 
default is “None”. 
Note:    When RS-232 interface is used, the parity of multimeter should be: 
                None parity: PC software should set 8 bits; 
                Odd/Even parity: PC software should set 7 bits