Tektronix Z-Active Series User Manual page 64

Examples of probe usage
For this TekConnect measurement signal, a standard short, slightly
stiff cable is used to connect the output of the TekConnect socket to
the electrical sampling module built into the 80A03 interface.
connection between the two cables.
If a synchronous clock signal source is not available, use the 80A05
module to generate a crisp trigger signal that is synchronized to the
input signal.