Teledyne LabMaster 10 Zi Series Getting Started Manual page 30

LabMaster 10 Zi Oscilloscopes
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).
Repeat the previous steps for every additional Acquisition Module in your
system.
Cap off unused SMA 10 GHz Clock Outputs on the back of your Master
Control Module using the chain-linked 50 Ω terminations provided.
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