Preparing the Extension Unit for Use
R&S
®
ZVAX24
12
Quick Start Guide 1312.7985.62 ─ 03
Input and output power of option R&S ZVAX-B203, "Low Noise Preamplifier"
The power gain of the low noise preamplifier is >30 dB. Its maximum output power is
below the damage level of the network analyzer ports.
Please observe the maximum input power of the preamplifier quoted in the R&S ZVAX24
data sheet. Never use the preamplifier in combination with the high power coupler and
high input powers at PORT 2 (see
Connection of PORT 2 for high receiver powers
).
2.1.3.3
RF Connectors Port 3
The Port 3 connectors allow components inside the extension unit to be looped into the
RF signal path of the network analyzer (NWA) test port 3. The connectors must be con-
nected to the corresponding connectors provided by the NWA option R&S ZVA24-B16
(see
chapter 2.1.3.4, "Rules for RF Connections"
To modify the source signal at analyzer port 3, connect the 2.92 mm connectors as fol-
lows:
●
SOURCE IN (ZVAX) to SOURCE OUT (NWA). If needed, connect an external ampli-
fier to the PORT 3 SOURCE 2.92 mm connectors on the rear panel to boost the
source power.
●
SOURCE OUT (ZVAX) to SOURCE IN (NWA)
2.1.3.4
Rules for RF Connections
The following rules simplify the RF connection between the extension unit and the net-
work analyzer (NWA):
●
The DUT is connected to the NWA test port connectors (3.5 mm). If a high power
coupler is installed at port 1 or port 2 of the extension unit, the test port connector of
the coupler replaces the NWA test port connector.
●
The 2.92 mm connectors labeled SOURCE of the extension unit are connected to
the NWA SOURCE connectors. The same applies to the REF and MEAS connectors.
●
XXX OUT connectors of the extension unit (where XXX denotes SOURCE, REF, or
MEAS) are connected to XXX IN connectors of the NWA and vice versa.
●
If no external components (attenuators, isolators) are looped into the connection, the
semirigid jumper cables provided along with the extension unit can be used for all
front panel connections between NWA and R&S
ZVAX24.
Front Panel Tour
