REI TALAN 3.0, Руководство пользователя

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MANUAL TEST FUNCTIONS
51
RF Spectrum Analysis
Select the RF Spectrum test function to access the RF spectrum analyzer. This mode is strictly
designed to analyze the RF spectrum of telephone wiring up to 85 MHz in a method very similar
to the OSCOR.
It is recommended that the desired pair is selected by first selecting the “Single pair” option
and then tapping the desired pair for analysis as indicated in the figure below.
The RF Spectrum Screen will be updated after the
START button is pressed.
The + and – buttons are used to zoom into the spectrum and look at specific signals or portions
of the spectrum. This is accomplished by positioning the cursor with a stylus and then using the
+ and – to zoom in or out.
Sweep and Analyze Screens
The RF Spectrum Analyzer screen is divided into two sections, “Sweep” and “Analyze”. The
Sweep screen is the wider top window that shows the full spectrum to 85 MHz. The two
windows below the Sweep screen are the Analyze windows: the window on the left is the
frequency spectrum window, and the window on the right is the time domain window. The
time domain window is basically an oscilloscope view of the demodulated signal.
The main difference between the Sweep and Analyze modes is that the Sweep mode scans
across the entire frequency spectrum in 10 kHz steps, but the Analyze mode locks the receiver
to a fixed frequency so that a signal may be demodulated and listened to. Hence, if the Analyze
mode is selected, the Sweep window will not be updated as shown in the next figure.