MFJ-226 Graphical Antenna Impedance Analyzer
3 Version 1A 1R02
Whether you are putting up a simple dipole, building a complex
matching network, or characterizing an unknown device, the MFJ-226
delivers the type of data you need to get the job done. A user-friendly
menu system provides rapid access to all operating modes and
features:
Single-Frequency Mode: Presents SWR, Complex
Impedance (series and parallel), and S11 scattering
parameters (rectangular and polar). SWR is displayed in
huge inch-high numbers clearly visible from several feet
away.
Sweep-Frequency Mode: Graphically plots SWR,
Impedance Magnitude (Z), Resistance (R), Reactance (X),
Return Loss (RL, S11), Phase Angle, and Smith Chart
displays. A continuously tunable frequency marker pulls up
precise alpha-numeric data.
Calibrate Mode: Walks you through the OSL cal setups for
both specific swept frequency measurements and for the
unit's global calibration procedure.
Settings Mode: Offers useful options, shows battery
condition and firmware revision.
PC-Mode: Links the analyzer’s memory files to your PC
through the serial data port.
THEORY OF OPERATION
The MFJ-226 is a full-featured one-port Vector Network Analyzer
(VNA). The term "vector" means it analyzes both the amplitude and
phase angle of reflections returning from loads being tested in order
to present complex impedance data.
Microprocessor
Coupler
Display
Load
(DUT)
Test Connector
LCD
Stimulus
Generator
Directional
PC Port
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