Teledyne Lecroy WaveSurfer 3000, Operator'S Manual, Page: 25 / 97

Operator's Manual
Horizontal Controls
The Delay knob changes the Trigger Delay value (S) when turned. Push the knob to reset Delay to zero.
The Horizontal Adjust knob sets the Time/division (S) of the oscilloscope acquisition system when the trace source is
an input channel. The Time/div value is shown on the Timebase descriptor box. When using this control, the
oscilloscope allocates memory as needed to maintain the highest sample rate possible for the timebase setting. When
the trace is a zoom, memory or math function, turn the knob to change the horizontal scale of the trace, effectively
"zooming" in or out. By default, the knob adjusts values in 1, 2, 5, 10 step increments. Push the knob to change the
action to fine increments; push it again to return to stepped increments.
Vertical Controls
Channel buttons turn on a channel that is off, or activate a channel that is already on. When the channel is active,
pushing its channel button turns it off. A lit button shows the active channel.
Offset knob adjusts the zero level of the trace (this makes it appear to move up or down relative to the center axis of the
grid). The value appears on the trace descriptor box. Push it to reset Offset to zero.
Gain knob sets Vertical Gain (V/div). The value appears on the trace descriptor box. By default, the knob adjusts values
in 1, 2, 5, 10 step increments. Push the knob to change the action to fine increments; push it again to return to stepped
increments.
Dig button enables digital input through the Digital Leadset on -MS models.
Math, Zoom, and Mem(ory) Buttons
The Zoom button creates a quick zoom for each open channel trace. Touch the zoom trace descriptor box to display the
zoom controls.
The Math and Mem (ory) buttons open the corresponding setup dialogs.
If a Zoom, Math or Memory trace is active, the button illuminates to indicate that the Vertical and Horizontal knobs will
now control that trace.
Cursor Controls
Cursors identify specific voltage and time values on the waveform. The white cursor lines help make these points more
visible. A readout of the values appears on the trace descriptor box.
There are five preset cursor types, each with a unique appearance on the display. These are described in more detail in
the
Cursors section.
Type selects the cursor type. Continue pressing to cycle through all cursor until the desired type is found. The type "Off"
turns off the cursor display.
Cursor knob repositions the selected cursor line when turned. Push to select a different cursor line to adjust.
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