R&S ZC Series, Getting Started

Page: 40 / 48

Setup and operation with R&S ZVA/ZVT
R&S
®
ZCxxx
40 Getting Started 1177.5156.02 ─ 05
an external generator is used, a power splitter is required for a two-port con-
verter setup. If the outputs of the splitter are so close that two cables cannot
be mounted in parallel, additional angled adapters are required. This setup is
shown in
Figure A-1 below.
If a power splitter is used and the phases of S
21
and S
12
deviate or drift by
equal magnitude, but opposite sign, check the phase stability of the LO paths
of both converters.
The required adapters and splitters are offered as complementary adaption kits
(see
Chapter A.1.4, "Adaption Kits R&S ZCAK" , on page 41).
Figure A-1: Test setup for 2-port transmission measurement with a VNA with two sources
A.1.3 Connecting the output connectors (MEAS OUT, REF OUT)
Suitable cables for connecting the output connectors to the network analyzer are
included in the converter shipment. The connectors of these cables are labeled
accordingly.
Connecting the RF cables