Teledyne LabMaster 10 Zi Series Operator's Manual page 35

LabMaster 10 Zi Oscilloscopes
SMA 72" Male to Male Cable
On the back of the Master Control Module, connect one end of an SMA
72" cable from a SMA 10 GHz Clock Output (labeled REF, unscrew the
chain-linked 50 Ω termination, if necessary) .
Now, on the back of the Acquisition Module, connect the other end of
the same SMA 72" cable into the corresponding SMA 10 GHz Clock
Input (labeled REF).
28 LM10Zi-GSM-E Rev A