RIGOL 
2-24 © Copyright RIGOL Technologies, Inc. 2007.       
  User Manual for DM3000 Series 
External Triggering 
is used to set the parameter which accomplish the triggering function, the 
external triggering function needs to set the following parameter: the Rise edge, the 
Fall edge, HiLev (high level) and LoLev (low level). After ensuring the setting is 
correct, press Done to startup the external triggering, the key           and         on 
the front panel will wink out, it means that the instrument has been working in the 
external triggering mode. 
Press     Æ Ext, enter the following menu. 
 
Figure 2-22  
The interface of the external triggering 
Users can set the triggering mod as the following: the rise edge, the fall edge, high 
level and low level.