Spectrum Analyzer Mode: Spectrum Mode Operation
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LEVEL Submenu
Press this to enter the LEVEL submenu, then to return to the
main menu. Use the Level soft key to adjust the vertical
parameters of the graph. These parameters include the
following:
The reference level is located at the top of the screen. You can
adjust it using the up and down diamond keys, or by entering a
numeric value with the keypad and then pressing the Enter key.
The scale parameter (1, 2, 5, and 10 dB/div) can be adjusted
only with up and down diamond keys. For example, if the
reference level is set to 0 dB and the scale is set at 10 dB/div,
the first horizontal grid line above the center equals -30 dB.
After setting the scale, press the Level soft key to return to the
main spectrum analyzer display.
The Maximum Hold function ensures that the highest amplitude
at each frequency over multiple sweeps is displayed. If
Maximum Hold is on, the small icon at the upper right corner of
the display will be darkened. As multiple sweeps occur, the
maximum level trace will change only if new sweep levels
exceed the levels of the current trace. A half-tone trace will
show you the current data when Maximum Hold is enabled.
These are two vertical markers on the display. The dotted line is
the active marker; the solid line does not move. This icon
toggles between the two. You can move the active marker with
the diamond keys. The A and B lines below the graph show the
difference in level between the two selected frequencies.
FREQUENCY Submenu
Press this soft key to enter the FREQUENCY submenu, and
again to return to the SPECTRUM main menu. The
FREQUENCY submenu enables you to select and adjust
center frequency, set the span, and move the A and B cursors
as required to evaluate any part of the display.
Press this soft key to select and adjust the center frequency.
Use the numeric keypad, then press the Enter soft key to place
the frequency you want into the Edit Box.
Use this soft key to select the span of coverage. If any
frequency becomes lower than 5 MHz or higher than 1,000
MHz, then the lowest or highest center frequency will be used.
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