Zaxcom RX-12, Руководство пользователя

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Zaxcom RX12 System Menu
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Scan Menu
From the scan menu is where the RX12 can search the spectrum to determine what RF is present. This will aid
in finding a clear operating frequencies. After a scan the RF that is present will be represented in the graph by
a series of vertical lines extending from the baseline up, the higher line the stronger the RF signal is.
The horizontal lines show the strength of the signal in decibels. Any stray RF below 40dB shouldn’t have too
much effect on the performance.
The yellow area shows the 35MHz window of the filter.
The colored vertical lines will show the frequencies that that the QRX212 modules are currently set to.
To initiate a scan press the star key. After scanning the current 35MHz window the filter can be repositioned
by moving the center frequency and additional scans can be performed to show more of the spectrum; the
RX12 will remember the previous scans and add the new scan to those.
When in the scan menu pressing the number 1 key will zoom out showing more of the scanned spectrum and
pressing the number 2 key will zoom in magnifying the scanned spectrum.
After the scan is completed frequencies can be chosen and set manually or Auto-Pick can be used which
allows the RX12 to determine the frequencies.
Center frequency
The center frequency is the frequency that is in the middle of 35MHz filter. The filter extends 17.5MHz above
and 17.5MHz below the center frequency. Adjusting the center frequency will physically move the location of
the filter. To adjust the filter rotate the menu encoder knob or enter the desired frequency on the numeric
keypad.
Marker
The marker is for visual identification to examine a specific frequency within the scan. To adjust the marker
rotate the menu encoder knob or manually enter the desired frequency on the numeric keypad.
80 dB
70 dB
60 dB
50 dB
40 dB