Span Control State - DEVA Broadcast DB4004 Maintenance And Operation Instruction Manual

Span control state:

In this state SB1, SB2 and Arrow buttons controls span of the data plot. The following is
description of button assignments in span control state:
(SB1) cycles through available span values for X axis of the data plot. Possible
values are between 3 and 21 MHz in 1 MHz increments. Note that changing X span may also
change the center frequency to keep data plot in bounds. On each key press next span value is
selected and displayed briefly on the screen.
(SB1) cycles through available span values for Y axis of the data plot. Possible
values are 30, 60, 90, and 120 dBµV. Note that changing Y span may also change the Y reference
to keep data plot in bounds. On each key press newly selected value is displayed briefly on the
screen.
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5MHz X span is selected
120 dBµV Y span is selected
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