®
R&S
ZN-Z15
2.2.6
Function Check
The R&S ZN-Z15 automatically monitors the most important instrument functions
when it is turned on.
2.3
Connecting External Devices
Apart from the RFFE GPIO interface, the R&S ZN-Z15 is equipped with different
interfaces for establishing a remote control connection, typically from a VNA of
the R&S ZNx family.
The VNA firmware only supports a single RFFE interface (external or inter-
nal) per R&S ZNB/ZNBT.
2.3.1
RFFE GPIO
The R&S ZN-Z15 is shipped together with a high-quality RFFE/GPIO interface
cable (and a set of adaptors) R&S ZN-Z25. Use this interface cable (and suitable
adaptors) to connect the R&S ZN-Z15 to the DUT. For details on the RFFE/GPIO
interface see
Chapter 3, "Instrument
2.3.2
Direct Control
The Direct Control interface allows to establish a direct connection between the
measurement bus of a vector network analyzer R&S ZNB/ZNBT and the FPGA
controlling the RFFE and GPIO interfaces. As Direct Control bypasses the exter-
nal RFFE interface's microcontroller it significantly reduces the reaction times
compared to management via USB or LAN.
The FPGA is put on the measurement bus by connecting the external RFFE inter-
face's "Direct Control IN" interface to the analyzer's "DIRECT CTRL" interface.
Cascading of Direct Control connections is possible via "Direct Control OUT" (see
Table
2-1).
User Manual 1177.5479.02 ─ 02
Putting the Instrument into Operation
Connecting External Devices
Functions",
on page 15.
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