Reference oscillator
R&S
®
SMA100B
294User Manual 1178.3834.02 ─ 09
9  Reference oscillator
The R&S SMA100B is equipped with an internal reference oscillator that generates a
reference frequency of 10 MHz. It is used as internal reference source for the synthe-
sizer.
Alternatively, you can apply an external reference signal. If equipped with the required
options, the R&S SMA100B can process external reference frequency in the range
1 MHz to 100 MHz and the 1 GHz reference frequency.
Regardless of the used reference source (internal or external), the R&S SMA100B
always provides the configured reference frequency at the output. You can use it, for
example to synchronize several interconnected instruments, see Chapter 9.5, "Using
the reference frequency for instruments synchronization", on page 300, for an overview
of typical test situations.
The reference oscillator settings are not affected by an instrument preset ([Preset] key
or *RST) and the "Save/Recall" function. They are reset only by factory preset.
9.1  Required options
R&S SMA100B base unit equipped with the following options:
●
100 MHz, 1 GHz ultra low noise reference input and output (R&S SMAB-K703)
●
1 MHz to 100 MHz flexible reference input (R&S SMAB-K704)
For more information, see data sheet.
9.2  Reference frequency settings
Access:
1. Select "Frequency" > "Reference Frequency".
Reference frequency settings