Rohde & Schwarz R&S ZNA Series - Page 307

Concepts and features
R&S
®
ZNA
307User Manual 1178.6462.02 ─ 29
The corresponding connectors are located on the front panel, beneath the related test
port (see Chapter 3.2.1, "Front panel", on page 35.
●
The Source Out signal comes from the internal RF signal source. The Source In
signal goes to the test port.
●
The Ref Out signal comes from the coupler and provides the reference signal. The
Ref In signal goes to the reference receiver.
●
The Meas Out signal comes from the coupler and provides the received signal (to
be measured). The Meas In signal goes to the receiver input for the measured sig-
nal.
Generator
PORT
Meas. Receiver
Ref. Receiver
Source Out
Ref Out
Meas Out
Direct generator/receiver access can be used to insert external components such as
amplifiers, attenuators or external signal separating devices into the signal path. E.g., a
power amplifier can be inserted between Source Out and Source In to boost the test
port power. In this sense, direct access enables custom measurements, e.g. to test
high-power devices or to extend the dynamic range.
If no external components are connected, each Out/In loop must be closed using a
jumper.
On a R&S ZNA67EXT, hardware option R&S ZNA67-B16 is preinstalled.
Reverse Coupler Configuration
The reverse coupler configuration is obtained by a simple reconnection of the direct
generator/receiver access jumpers.
By inverting the signal routing of RF out and measurement path, the sensitivity of the
measurement receiver is increased by 10 dB to 20 dB .
Optional extensions and accessories