Stanford Research Systems SR780, Operating Manual And Programming Reference

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3-32 Keypad
SR780 Network Signal Analyzer
Function Keys
[Auto Scale A]
[Auto Scale A] automatically sets the vertical scale of DisplayA to show the entire range
of the data. Horizontal scaling is not affected.
Auto scale only operates on the data which is displayed on the graph. If the graph is
expanded, data corresponding to frequency or time bins which are not shown do not
figure in the auto scaling calculations.
[Link] [Auto Scale A] auto scales DisplayA and sets the vertical scale of DisplayB to
match DisplayA.
Command: ASCL d
[Auto Scale B]
[Auto Scale B] automatically sets the vertical scale of DisplayB to show the entire range
of the data. Horizontal scaling is not affected.
Auto scale only operates on the data which is displayed on the graph. If the graph is
expanded, data corresponding to frequency or time bins which are not shown do not
figure in the auto scaling calculations.
[Link] [Auto Scale B] auto scales DisplayB and sets the vertical scale of DisplayA to
match DisplayB.
Command: ASCL d
[Auto Range Ch1]
[Auto Range Ch1] toggles Channel 1 Input Ranging between Manual and Auto. In
Manual Ranging, the Input Range is set within the [Input] menu. In Auto Range, the
Input Range is adjusted automatically according to the Ch1 AutoRange Mode (also in the
[Input] menu). In Normal Auto Range, only overloads cause the range to change. In
Tracking Auto Range, the Input Range moves up for overloads and down when the signal
falls below half scale.
In Swept Sine group, Auto Range is always tracking.
The Ch1 Input Range indicator at the top of the screen will be shown in inverse if Ch1 is
Auto Ranging.
Auto Range responds to all frequencies present at the input (except those attenuated by
AC coupling), not just those within the measurement span.
[Link] [Auto Range Ch1] toggles the Input Ranging of both channels.
Command: A1RG (?) {i}