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G E T T I N G
S T A R T E D
REF: Reference level, top left. The reference level is the signal amplitude for the
⇒
top Graticule line.
DB/div: Amplitude scale, near top left, in dB per division of the Display Window.
⇒
In Linear scale, this will be mV/div.
ATTEN: Attenuator setting, top center. The internal electronic attenuator may
⇒
be set to 0, 5, 10, or 15 dB.
INT / EXT REF: Top right. Indicates whether internal or external reference is
⇒
selected.
START, CENTER, STOP: Bottom left, center and right of Display Window.
⇒
Start, center, and stop frequencies, representing the frequency of the left, center,
and right Graticule lines, respectively.
RBW:
Selected
⇒
calculated from FFT size and sample rate
VBW: Video Bandwidth currently selected.
⇒
SPAN: Difference between start and stop frequencies.
⇒
SWP: In zero-span, this is the exact sweep time from left to right. In all other
⇒
spans this is time elapsed during the last sweep.
MARKER DATA will appear along the bottom of the graticule.
⇒
Annunciators: In the top left corner of the graticule, you may see some letters.
⇒
These will notify you when readings are uncalibrated or a special setting exists such
as image rejection off. See the HELP menu for additional information.
2.2 The Control Panel
The control panel is the section on the right-hand side of the Graphical User Interface,
or GUI. It has buttons for the most common user commands. Frequency, span,
reference level, trigger, video and resolution bandwidth processing, sweep and marker
commands are available here.
Try this: Click CENTER FREQ, then using the mouse, click the
buttons 1, 2, 3, MHz. You should see your center frequency change to
123 MHz. Now click SET SPAN, 5, 0, KHz. Watch as start and stop
frequencies and span are updated in the lower section of the graticule.
Resolution
Bandwidth,
5
Markers may be placed
anywhere on the trace by
left-clicking inside the
graticule at the desired
location.
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