Rohde & Schwarz R&S ZNA Series - Page 266

Concepts and features
R&S
®
ZNA
266User Manual 1178.6462.02 ─ 29
O U T O U T
INI N
MEASSO URCEREF
O U T O U T
INI N
MEASSO URCEREF
Figure 4-21: RF ports, external combiner
The lower-tone port must be a VNA port, the upper-tone port can be an external gener-
ator port.
If equipped, the internal combiner is the preferred signal combination option:
O U T O U T
I NI N
M E A SS O U R C ER E F
O U T O U T
I NI N
M E A SS O U R C ER E F
Figure 4-22: Internal combiner
For a 2-port instrument the tones are generated at VNA ports 1 and 2, the combined
signal is output to port 1.
For a 4-port instrument, the tones must be generated at VNA ports 1 and 3, the com-
bined signal is output to port 1.
For a R&S ZNA that is equipped with option R&S ZNAxx-B16, Direct Generator/
Receiver Access but not with an internal combiner, the following test setup is recom-
mended:
Optional extensions and accessories