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Span control state:
SB1
,
SB2
and
Arrow buttons
control the
Span
of the data plot. Depending on the
Span
control
state the Soft buttons have different usage.
– (SB1) cycles through available span values for X axis of the data plot. The
possible values vary between 3 and 21 MHz in 1 MHz increments. Note that changing X span may
also change the center frequency in order to keep data plot in bounds. When a key is pressed next
span value will be selected and displayed on the screen.
5MHz X span is selected
– (SB1) cycles through available span values for
Y axis
of the data plot. The
possible values are 30, 60, 90, and 120 dBμV. Note that in order to keep the data plot in bounds
changing
Y span
may also change the
Y reference
. When the button is pressed new value will be
selected and displayed on the screen.
120 dBμV Y span is selected
Содержание DB7000
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