General Programming 6 
 
Keysight M8195A Revision 2 – Arbitrary Waveform Generator User’s Guide    217 
 
6.15  Reference Oscillator Commands 
 
 
6.15.1  [:SOURce]:ROSCillator:SOURce[?] EXTernal|AXI|INTernal  
 
Set or query the reference clock source. 
  EXTernal: reference is taken from REF CLK IN. 
  AXI: reference is taken from AXI backplane. 
  INTernal: reference is taken from module internal reference oscillator. May 
not be available with every hardware.  
Command not supported with Revision 1 hardware.