RIGOL  Chapter 1 Quick Start 
1-18  MSO4000/DS4000 User’s Guide 
2.  Reference Clock 
A more precise sample clock signal can be provided for the oscilloscope with the 
reference clock. It can also be used to synchronize the clocks of two or more 
oscilloscopes. 
 
3.  Video Output 
Through this interface, the oscilloscope can be connected to an external monitor 
for clearer waveform display. At this point, the display of the oscilloscope is still 
operational. 
 
4.  LAN 
Through this interface, the oscilloscope can be connected to the local area 
network for remote control. This oscilloscope conforms to LXI-C standard and 
can quickly build test system with other devices. 
 
5.  USB DEVICE 
Through this interface, the oscilloscope can be connected to PictBridge printer to 
perform the print operation or PC to control the oscilloscope remotely. 
 
6.  USB HOST 
You can connect a USB storage device via this interface to perform external 
storage and recall. You can also extend a GPIB interface via this interface using 
the USB-GPIB interface converter (optional) provided by RIGOL to realize GPIB 
communication. 
 
Note: There is also a USB HOST interface at the front panel. 
 
7.  Lock Hole 
Use a security lock (available separately) to lock the oscilloscope to a fixed 
location via this lock hole. 
 
8.  AC Power Socket/Power Switch 
AC power input terminal. This oscilloscope accepts two kinds of AC power 
supplies: 100-127 V, 45-440 Hz and 100-240 V, 45-65 Hz. For the power 
connection method, refer to “To Connect to Power Supply”. 
 
 
www.calcert.com sales@calcert.com1.800.544.2843
0
5
10
15
20
25
30