RIGOL DSA875 - Manual (Page 2)

User’s Guide RIGOL
Jun. 2014
VB1080 VSWR Bridge
Product Overview
VB1080 is used in combination with the RIGOL DSA series spectrum analyzer to measure
S11-related parameters (such as return loss, reflection coefficient and VSWR). VB1080
provides three N (Female) connectors as shown in the figure below.
— IN: Signal input terminal. Here the signal generator or the output terminal of the
tracking generator of the spectrum
analyzer is connected.
— OUT: Signal output terminal. Here the
power meter or the RF input terminal of the
spectrum analyzer is connected.
— DUT: Here the device under test is
connected.
Measurement Connection
Connect VB1080 to the spectrum analyzer
as shown in the figure on the right.
— Connect the spectrum analyzer
Use 2 Dual N (Male) adaptors to
connect the output terminal of the
tracking generator and the RF input
terminal of the spectrum analyzer to
the IN terminal and OUT terminal of
the VSWR bridge respectively.
— Connect the device under test
Do not use cables or adaptors as far as possible to avoid additional reflection.
Typical Applications
— Measurement of the S11-related parameters of the filter, amplifier, mixer, etc.
— Resonant frequency and VSWR tests of the antenna.
VSWR Bridge
Spectrum Analyzer
Adapter
Connect the device under test
User’s Guide RIGOL
Jun. 2014
Specifications
Frequency
Frequency range 2 GHz to 8 GHz
Connector
Connector type N (Female) type
Adaptor dual N (Male) type
Impedance 50 Ω
Insertion Loss
IN to DUT <1 dB (typical)
Directivity
Typ. ≥20 dB
Min. 15 dB
Input Power
Maximum input power +27 dBm (0.5 W)
General Specifications
Dimensions
115 mm×41 mm×17.5 mm
256 mm×190 mm×43 mm (with package)
Weight
0.2kg
0.9kg (with package)
Operation temperature -20 ℃ to 50 ℃
Storage temperature -40 ℃ to 100 ℃