R&S SMA100B - Page 302

Reference oscillator
R&S
®
SMA100B
302User Manual 1178.3834.02 ─ 09
Using external reference source
If you have a clean external reference signal with 10 MHz or 100 MHz frequency, for
example, you can directly pass it to the output. The signal quality remains the same.
10 MHz, 100 MHz at connector Ref Out and Ref In
●
External f
Ref
= 10 MHz or 100 MHz
(earlier RF hardware versions: 5 MHz, 10 MHz, 13 MHz)
●
Source = "External"
●
Reference Output = "10 MHz, 100 MHz" or "Input Signal (loop through)"
(earlier RF hardware versions: 5 MHz, 10 MHz, 13 MHz)
●
Set the synchronization bandwidth according to the requirements of the applica-
tion.
Figure 9-2: Synchronizing instruments with a 10 MHz external reference signal
Ref. Frequency Source = e.g., Rohde & Schwarz signal analyzer
f
Ref
= 10 MHz, 100 MHz, 1 MHz to 100 MHz external reference frequency
Ref In, Ref Out = Connectors
You can forward reference frequency between 1 MHz and 100 MHz directly to the out-
put in the same way.
●
External f
Ref
= 1 MHz to 100 MHz
(1 MHz to 100 MHz at connector Ref In and Ref Out)
●
Source = "External"
●
Variable Reference Frequency = "Variable"
●
External Reference Frequency = current external frequency
●
Reference Output = "Input Signal (loop through)" or specify the reference fre-
quency the synchronized instrument supports
●
Set the synchronization bandwidth according to the requirements of the applica-
tion.
Deriving 10 MHz from the external reference frequency
10 MHz reference frequency can be derived from the following external reference sig-
nals:
●
10 MHz from internal oscillator locked to external input
●
100 MHz and 1 GHz external reference signals
●
External reference signal between 1 MHz and 100 MHz
●
If the external reference signal is interfered (noisy)
Using the reference frequency for instruments synchronization