CMU RF: Connection Control
1100.4903.12 4.69 E-10
Fig. 4-32 Connection Control – Synchronization
Reference
Frequency
The Reference Frequency softkey determines the source and the frequency of the
reference signal.
The associated field allows to select between two alternatives:
Int. (10 MHz) Internal synchronization by means of a 10 MHz reference fre-
quency (TCXO or OCXO, CMU-B11/-B12).
Ext. (at REF IN) Synchronization to external reference signal to be fed in via input
REF IN. The external reference signal can be used for synchro-
nization of the CMU to another instrument. Its frequency must be
entered in the input field next to the External button.
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