If the scope is Hi-Z, DO NOT terminate the coupler internally. Instead,
use a BNC Tee and terminate at the scope input with a 50 ohm
termination. Otherwise, the feedline to the scope will provide a
reactive load to the coupler port.
Larry N8LP
Paul T. Rubin wrote:
Hi All:
I am not sure I understand the procedure for terminating the sampling ports.
If a port is unused it says to terminate it into the internal 50 ohm load to
maintain balance. This makes sense. But if I connect a port (or ports)
through a short piece of 50 ohm coax to a scope which has a high impedance
input, is this port properly terminated?
Thanks,
Paul N8NOV
Houston
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