RIGOL  Chapter 1 Quick Start 
User’s Guide for DSA800/E Series 
connector, this signal is used as the external reference source and “Ext 
Ref” is displayed in the status bar of the user interface. When the external 
reference is lost, transfinite or not connected, the instrument swithes to 
its internal reference source automatically and “Ext Ref” on the screen 
disappears. 
  The [10MHz IN] and [10MHz OUT] connectors are usually used to 
build synchronization among multiple instruments. 
 
6.  10MHz OUT 
DSA800/E can use internal or external reference source. 
  When internal reference source is used, the [10MHz OUT] connector 
can output a 10 MHz clock signal generated by the analyzer. This signal 
can be used to synchronize other instruments. 
  The [10MHz OUT] and [10MHz IN] connectors are usually used to 
build synchronization among multiple instruments. 
 
7.  TRIGGER IN 
In external trigger mode, the connector receives an external trigger signal 
through a BNC cable. 
 
8.  LAN Interface 
Through this interface, the analyzer can be connected to your local network 
for remote control. An integrated testing system can be built quickly, as the 
analyzer conforms to LXI Core 2011 Device instrument standards. 
 
9.  USB Device Interface 
The analyzer can serve as a “slave” device to connect external USB devices. 
Through this interface, a PictBridge printer can be connected to print screen 
image or a PC can be connected to control DSA800/E remotely through 
programming or PC software.