Composite Signals; Figure 14: Composite Signal Connection - Tektronix WVR8200 User Manual

Configuring signal inputs

Composite signals

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Connect a composite signal to one of the CMPST inputs on the rear panel of the
instrument. You must terminate the loop-through for this input. After that is
finished, use the front panel buttons to set the parameters for monitoring that
signal.
The composite inputs are passive and require external termination.
If this instrument is installed to monitor an operating link, the destination receiver
and the connecting cable serve as the termination. This monitoring connection
checks the performance of the entire path. The return loss of the instrument is
sufficiently high that, in most cases, the destination receiver sets the system return
loss.
In cases where this instrument is placed at the end of a link, a BNC termination
must be installed on one side of the loop-through composite connector. The
termination must be 75 Ω and DC coupled.

Figure 14: Composite signal connection

WVR8200 and WVR8300 User Manual