R&S SMB  RF Reference Frequency - Reference Oscillator 
1407.0806.32 4.31  E-2 
External 
An external reference signal is used. The frequency 
of the external reference signal must be selected 
under External Reference Frequency. 
Remote-control command: 
SOUR:ROSC:SOUR EXT 
 
External Reference 
Frequency - Reference 
Oscillator 
Selects the frequency of the external reference signal. 
Remote-control command: 
SOUR:ROSC:EXT:FREQ 13E6 
 
Adjustment Active - 
Reference Oscillator 
Selects adjustment mode. 
 
Off 
The calibrated adjustment value of the internal 
reference frequency is used. This value is 
determined at one of the R&S service shops during 
calibration. 
Remote-control command: 
SOUR:ROSC:INT:ADJ:STAT OFF 
 
 
On 
A user-defined adjustment value is used. The value 
is entered under Adjustment Frequency. 
This allows the frequency to be impaired freely, for 
example to simulate a frequency error. 
The instrument is no longer in the calibrated state. 
However, the calibration value is not changed and 
the instrument resumes the calibrated state after 
switching the Adjustment State to Off. 
Remote-control command: 
SOUR:ROSC:INT:ADJ:STAT ON 
 
Adjustment DAC value - 
Reference Oscillator 
Enters a user-defined adjustment value for the internal reference 
frequency. This value is not used unless Adjustment Active On is 
selected. 
Remote-control command: 
SOUR:ROSC:INT:ADJ:VAL 1400