Isolation and insertion loss vary with
frequency and depend on the port selected,
as shown in the chart and tables below.
The input connector “C” is always defined
as the connector at the opposite end of the
switch from the dc drive cable.
The output ports are numbered
sequentially from the input connector. For
example, if an 8768K is being used, use the
8768K table to read isolation to each port.
If port three (the third connector from the
input) is selected, the isolation to ports 1
and 2 will follow curve A. Isolation to port
4 will follow curve B and isolation to port 5
will follow curve C. Reading from Figure 3
at 8 GHz, the worst case isolation to ports
1 and 2 will be 30 dB; to port 4, 45 dB; and
to port 5, 65 dB. Note that in selecting
ports 1 or 2, isolation to disconnected
ports can be varied by choosing the
position of each section to “thru” or
“on.” The important thing to note is that,
depending on the user’s application, port
assignments can be important to optimize
performance at higher frequencies.