Agilent Technologies InfiniiVision DSO6014L, Руководство пользователя

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Front-Panel Controls 2
6000 Series Oscilloscope User’s Guide 87
When the oscilloscope is running in Main mode, use the large
Horizontal knob to change sweep speed and use the small
knob (
) to set the delay time. When the oscilloscope is
stopped, use these knobs to pan and zoom your waveform.
The sweep speed (seconds/division) value is displayed in the
status line.
3
Press the
Vernier
softkey to turn on the time base vernier.
The Vernier softkey lets you change the sweep speed in
smaller increments with the time/division knob. The sweep
speed remains fully calibrated when Vernier is on. The value
is displayed in the status line at the top of the display.
When Vernier is turned off, the Horizontal sweep speed knob
changes the time base sweep speed in a 1-2-5 step sequence.
4
Note the setting of the
Time Ref
(time reference) softkey.
Time reference is the reference point on the display for delay
time. Time reference can be set to one major division from
the left or right edge, or to the center of the display.
A small hollow triangle (
∇
)
at the top of the display grid
marks the position of the time reference. When delay time is
set to zero, the trigger point indicator (
) overlays the time
reference indicator.
Turning the Horizontal sweep speed knob will expand or
contract the waveform about the time reference point (
∇
).
Turning the Horizontal delay time ( ) knob in Main mode
will move the trigger point indicator ( ) to the left or right of
the time reference point (
∇
).
The time reference position sets the initial position of the
trigger event within acquisition memory and on the display,
with delay set to 0. The delay setting sets the specific location
of the trigger event with respect to the time reference
position. The time reference setting affects the delayed sweep
as described in the following ways:
•
When the horizontal mode is set to Main, the delay knob
positions the main sweep relative to the trigger. This delay
is a fixed number. Changing this delay value does not
affect the sweep speed.