Commands - Array Solutions AIM4170 Manual

Antenna Analyzer AIM4170
The color of each trace corresponds to the color of the label at the top of the Y-axis.
SWR is RED and this scale is on the left side of the graph. On the right side the
magnitude of the impedance is the inside scale and the trace is GREEN. The reactance
is in YELLOW, also on the inside scale. Reactance and impedance use the same scale.
Reactance can be positive (inductive) or negative (capacitive). The phase angle of the
load impedance is plotted in
vertical axis. These colors can be changed in the configuration (*.cfg) file if desired.
The most common commands use the buttons along the bottom edge of the screen:
SCAN (S)– Starts the frequency scan between the specified limits: Start_freq to the
End_freq. (see Limits button below.) Each time the scan button is clicked, the graph is
cleared and the new scan data replaces the previous data in memory.
RESCAN (R) – A new scan is started but the graph is not cleared. This makes it easy to
see the before and after effects of changes to an antenna (or any discrete component
being measured). The new data replaces the previous data in memory but both graphs
can be viewed simultaneously. RESCAN can also be used to overlay new data on top of
a scan that was loaded from a data file. See "File -> Load" below.
RECYCLE – Scanning is repeated over and over until the RECYCLE or the HALT
button is clicked. This makes it possible to continuously view the results while adjusting
an antenna or tuning a stub. The resonant frequency is displayed above the graph and it's
updated after each scan during recycle. The scan limits can be adjusted to narrow the
scan range for a faster update rate.
POINT DATA (D) - Measure the impedance at a specified frequency. This is used for
diagnostics. The measurement can be a single-shot reading or repeated about 2 times per
second until the point data window is closed.
In the recycle mode, a set of buttons appear in the data window to allow the test
frequency to be incremented or decremented.
LIMITS (L)– When this button is clicked, a dialog box, as shown below, pops up for
entering the start and stop frequencies and the size of the frequency increment (step)
between measurement points. The start and stop frequencies range from 0.1MHz to
170MHz for the AIM4170.

Commands

MAGENTA and this scale is on the outside of the right hand
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