Instrument Function
R&S
®
SMBV100A
216Operating Manual 1176.8016.02 ─ 17
Source
Selects the source of the reference frequency.
See Chapter 5.5.4, "Reference Oscillator", on page 213, which provides an overview of
the different test scenarios for configuring the reference frequency.
"Internal"
Uses the internal 10 MHz reference signal, either with the calibrated
or a user-defined adjustment value.
"External"
Uses an external reference signal.
The frequency of the external reference signal must be selected
under "External Reference Frequency" on page 216.
An external reference signal is required for each slave instrument
configured to work in a synchronous mode (see Chapter 5.9.2.4,
"Synchronous Signal Generation", on page 329).
Remote command:
[:SOURce]:ROSCillator:SOURce on page 806
Deactivate RF Output (if external reference is missing)
Turns the RF output off when the external reference signal is selected, but no signal is
supplied.
This function prevents that no improper RF signal due to the missing external refer-
ence signal is used for measurements. A message indicates that the external signal is
missing and the RF output is deactivated.
This setting is not affected by a reset.
Remote command:
[:SOURce]:ROSCillator:EXTernal:RFOFf[:STATe] on page 804
External Reference Frequency
Determines the frequency of the external reference signal.
You can select an external reference signal having a frequency of 5 MHz or 10 MHz.
Note: The installed hardware determines the available settings. Use the Hardware
Config dialog to check the hardware the instrument is equipped with.
For information on the required hardware revision, refer to the release notes.
Remote command:
[:SOURce]:ROSCillator:EXTernal:FREQuency on page 804
Synchronization Bandwidth
Selects the synchronization bandwidth for an external reference signal.
"Narrow"
Synchronization bandwidth is 50 Hz.
"Wide"
The synchronization bandwidth is approximately 350 Hz.
This mode is useful for very precise reference sources of high spec-
tral purity.
Remote command:
[:SOURce]:ROSCillator:EXTernal:SBANdwidth on page 804
Adjustment Active
Selects the adjustment mode.
RF Block
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