RIGOL DG1000Z Series - Manual (Page 213)

Chapter 2 Command System RIGOL
DG1000Z Programming Guide 2-201
:SYSTem:ROSCillator:SOURce
Syntax :SYSTem:ROSCillator:SOURce {INTernal|EXTernal}
:SYSTem:ROSCillator:SOURce?
Description Set the system clock source to internal source (INTernal) or external source
(EXTernal).
Query the system clock source type.
Parameter Name Type Range Default
{INTernal|EXTernal} Discrete INTernal|EXTernal INTernal
Explanation  DG1000Z provides an internal 10MHz clock source and accepts external clock
source from the [10MHz In/Out] connector at the rear panel. It can also
output clock source from the [10MHz In/Out] connector for other devices.
 If external clock source is selected, the instrument will detect whether a valid
external clock signal is inputted from the [10MHz Out/In] connector at the
rear panel. If no valid clock source is detected, the corresponding prompt
message would be displayed and the clock source would be switched to
internal.
 You can synchronize two or more instruments by setting the clock source.
Synchronization between two instruments:
Connect the output of the [10MHz In/Out] connector of instrument A (set
the clock source to “Internal”) to the [10MHz In/Out] connector of
instrument B (set the clock source to “External”) and set the output
frequencies of instruments A and B as a same value to realize synchronization
between the two instruments.
Synchronization among multiple instruments:
Divide the 10MHz clock source of a instrument (set the clock source to
“Internal”) into multiple instruments, and then connect them to the [10MHz
In/Out] connectors of other generators (set the clock source to “External”)
respectively, and finally set the output frequencies of all the instruments as a
same value to realize synchronization among the multiple instruments.
Return Format The query returns INT or EXT.
Example :SYST:ROSC:SOUR INT /*Set the system clock source to internal*/
:SYST:ROSC:SOUR? /*Query the system clock source and the query returns
INT*/
:SYSTem:SECurity:IMMediate
Syntax :SYSTem:SECurity:IMMediate
Description Sanitizes all the user-accessible instrument memory information.
Explanation This command sanitizes all the user-defined state information, arbitrary waveforms
and I/O settings (such as the IP address) as well as restores the instrument settings
to the factory values.