R&S ZVAX-TRM, Руководство пользователя

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Building Blocks and RF Signal Flow
R&S
®
ZVAX-TRM
11 User Manual 1325.1268.02 ─ 04
R&S ZVA/ZVT with two internal sources can perform bidirectional intermodulation
measurements without having to alter the RF connections.
The built-in monitor switch allows to use the combiner input from path 3 (path 4) as ref-
erence signal for port 3 (port 4), even if the combiner is looped into source paths 1 and
3 (source paths 2 and 4).
For the related options, see Chapter 4.2.4, "Broadband Combiners" , on page 29.
2.4 Direct Generator/Receiver Access
In order to enable application-specific extensions, the R&S ZVAX-TRM frontend pro-
vides access to the source and measurement paths of ports 1 and 2, similar to the
"Direct Access" connectors at the R&S
ZVA/ZVT. This allows to loop external compo-
nents (filters, attenuators, isolators, amplifiers etc.) into the related source and/or mea-
surement paths or to connect additional measurement instruments.
Direct generator/receiver access is already part of the base models (see Chapter 4.1,
"Models" , on page 27) and doesn't require any additional option.
The external RF path extensions can be bypassed using electronic transfer switches;
there is no need to jumper the respective IN/OUT connectors.
2.5 RF Signal Flow (w/o combiners)
If no combiner is switched into the signal path, ports 1 and 2 are physically provided by
the extension unit (ports 1 and 2 of the analyzer are not used):
RF Signal Flow (w/o combiners)