Instrument Function
R&S
®
SMC100A
112
Operating Manual 1411.4060.32 ─ 04
5.3.4.1
Reference Oscillator Dialog
To open the "Reference Oscillator" dialog, select "RF > Configure > Reference Oscilla-
tor" or use the MENU key under "RF".
The menu is used to select the source and to adjust the reference frequency. In case an
external source is selected, the reference frequency is displayed.
Source - Reference Oscillator
Selects the source of the reference frequency.
"Internal"
The internal reference signal of 10 MHz is used, comprising either the
calibrated or a user-defined adjustment value.
"External"
An external reference signal is used. The frequency of the external ref-
erence signal must be selected under "External Reference Fre-
quency".
SCPI command:
Deactivate RF Output - Reference Oscillator
Determines if the RF output is switched off in case of a missing external reference signal
for selection external source.
If enabled, this setting ensures that no improper RF signal due to the missing external
reference signal is output and used for measurements.
In addition to the error message "Ext Ref missing", the information "RF output deactiva-
ted" is indicated.
This setting is not influenced by a reset.
SCPI command:
External Reference Frequency
Indicates the frequency of the external reference signal.
SCPI command:
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.
RF Signal - RF Block