Command system EN Function description Select an internal or external reference oscillator source. Argument Instructions ⚫ EXTernal: The instrument uses the signal in the 10 MHz In connector on the rear panel as a reference and generates an error message if this signal is missing or the instrument cannot lock to it. In such error cases, the instrument will continue to ⚫ INTernal: The instrument uses the internal reference oscillator and ignores the output, but at an erratic frequency. signal in the 10 MHz In connector. Return format INTernal or EXTernal.
For example, SYSTem:ROSCillator:SOURce EXTernal /* Set the system clock source to external */ 3.24 The SOURce subsystem Subsystem using the optional SOURce keywords. SOURce subsystem commands are not usually used with the SOURce keywords, hence, these are listed by respective subsystem as follows: AM ASK BPSK BURSt DATA FM FREQuency FSKey HDG300C Programming manual Copyright © Qingdao Hantek Electronics Co., LTD 58 Name Range Default value SOURce INTernal|EXTernal INTernal