Controls, Connectors, and Indicators
TURN-ALT When the SEC/DIV knob is out, clockwise rotation
activates the Alternate Horizontal Display mode. The
Alt mode presents the intensified A Sweep
alternating with the delayed B Sweep. The position
of the intensified zone on the A Sweep indicates the
time position of the B Sweep, and the length of the
intensified zone indicates the B-Sweep duration. A
separate B Sweep runs for each intensified zone.
PUSH-B In the Alt horizontal display mode, pushing in the
SEC/DIV knob displays only B Sweeps.
When the B-Sweep speed is set equal to the A-
Sweep speed in Alt or B display mode, the mode
changes from A to B or from Inten to Alt.
29) VAR Control Continuously varies the sweep speed between SEC/DIV
switch settings, for either the A Sweep or B Sweep. The
detent position (full clockwise rotation) produces the
basic sweep speed selected by the SEC/DIV switch. The
fully counterclockwise position slows the sweep by a
nominal factor of three. The CRT readout displays the
actual time-per-division scale factor for all settings of the
VAR control. When the Intensified A Sweep or the
B Sweep is displayed, VAR affects only the B-Sweep
scale factor.
30) TRACE SEP
Control
Positions the B trace downward from the A trace in Alt
horizontal display mode. In the B horizontal display
mode,
with At or 1/At, TRACE SEP positions the trace
associated with the A control downward. Fully clockwise
rotation eliminates separation between the traces.
POSITION
Control
X10 MAG
Button
Horizontally positions the sweep displays.
Horizontally magnifies the portion of the sweep display
positioned at the center vertical graticule line by a factor
of 10. When in Alt or B horizontal display mode, only the
B Sweep is affected.
5-14
2465B/2455B/2445B Operators
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