RIGOL  Chapter 5 To Trigger the Oscilloscope 
5-32  MSO1000Z/DS1000Z User’s Guide 
--press Data Bits to select “5 bits”, “6 bits”, “7 bits” or “8 bits”;  
--press Data and use   to set the data value of RS232 trigger. According to 
the setting in Data Bits and the ranges can be from 0 to 31, from 0 to 63, from 
0 to 127 or from 0 to 255 respectively. 
 
Baud Rate: 
Set the baud rate of data transmission (equal to specifying a clock frequency). Press 
BaudRate to set the desired baud rate to 2400 bps, 4800 bps, 9600 bps (default), 
19200 bps, 38400 bps, 57600 bps, 115200 bps, 230400 bps, 460800 bps, 921600 
bps, 1 Mbps and user-defined. When “User” is selected, press Setup to set a more 
specific value from 110 to 20000000 with an adjustment step of 1 bps. For the 
setting method, please refer to the introduction in “
Parameter Setting Method”. 
 
Trigger Mode: 
Press Sweep to open the trigger mode list and select auto, normal or single. For the 
details, please refer to “
Trigger Mode”. The corresponding status light of the 
current trigger mode turns on. 
 
Trigger Setting: 
Press Setting to set the trigger parameter (noise rejection) under this trigger type. 
 
Trigger Level: 
When the trigger source is an analog channel, you can use TRIGGER    LEVEL to 
modify the level. For the details, please refer to the introduction of “
Trigger Level”.