Chapter 2 111
Front-Panel Key Reference
FREQUENCY Channel
FREQUENCY Channel
Activates the center frequency function, and accesses the menu of
frequency functions. The center frequency, or start and stop frequency
values appear below the graticule on the display.
Although the analyzer allows entry of frequencies greater than the
specified frequency range, using frequencies greater than the frequency
range of the analyzer is not recommended
NOTE When changing both the center frequency and the span, change the
frequency first since the span can be limited by the frequency value.
CAUTION When operating in dc coupled mode, take care to protect the input
mixer by limiting the input level to 0 Vdc and +30 dBm.
Center Freq Activates the center frequency function (when Scale Type is set to Lin)
which allows you to set the horizontal center of the display to a specific
frequency. When
Scale Type is set to Log, Center Freq activates the
center frequency function which allows you to move the average of the
start and stop frequencies. In this scale type the center frequency value
will not necessarily represent the horizontal center of the display.
Key Access:
FREQUENCY Channel
Start Freq
Sets the frequency at the left side of the graticule. The left and right
sides of the graticule correspond to the start and stop frequencies.
When these frequencies are activated, their values are displayed below
the graticule in place of center frequency and span.
Key Access:
FREQUENCY Channel
Stop Freq
Sets the frequency at the right side of the graticule. The left and right
sides of the graticule correspond to the start and stop frequencies.
When these frequencies are activated, their values are displayed below
the graticule in place of center frequency and span.
Key Access:
FREQUENCY Channel
CF Step
Auto Man
Changes the step size for the center frequency function. Once a step
size has been selected and the center frequency function is activated,
the step keys change center frequency by the step-size value. The step
size function is useful for finding harmonics and sidebands beyond the
current frequency span of the analyzer. When auto-coupled, the center
frequency step size is set to one division (10 percent of the span).
Key Access:
FREQUENCY Channel
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