Teledyne LeCroy LabMaster 9Zi-A - Manual (Page 52)

LabMaster 9 Zi-A
44 922157-00 Rev A
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.