Dell 3100 Especificações descarregar pdf (Página 269)

Interleave Scanning

Interleave Mode Description

Rev. D Dimension 3100 Manual 249

14.2 Interleave Mode Description

Enabling Interleave changes the scan pattern of the tip relative to the imaged area. With Interleave

mode disabled, the tip scans back and forth in the fast scan direction while slowly moving in the

orthogonal direction as shown on the left of Figure 14.2a. This is the standard scan pattern of the

NanoScope.

Figure 14.2a X-Y Scan Pattern

With Interleave mode enabled, the system ﬁrst performs a standard trace and retrace with the Main

Feedback Controls in effect. The tip moves at half the normal rate in the slow scan direction. As

shown on the right of Figure 14.2a, an additional trace and retrace are then performed with the

Interleave Feedback Controls enacted. The frame rate halves because twice as many scan lines

are performed for the same scan rate.

Four modes are possible for Interleave scan: Interleave, Linear, Retrace Lift and Lift. With

Interleave selected, the feedback remains on during the interleave pass with the values under

Interleave Feedback Controls (Setpoint, Gains, etc.) in effect. In LiftMode, the feedback is

instead turned off, and the tip lifted off the surface and scanned at a user-selected height.

Topography data recorded during the main pass is used to keep the tip a constant distance from the

surface during the Interleave trace and retrace. In Linear mode, the tip is lifted above the surface

to the speciﬁed height using the median value of the main scan line as the reference for the lift

height. If there are any features taller than the lift height you entered, the system will lift the tip over

those features rather than crashing the tip. In Retrace Lift the tip is on the surface during the main

scan, and lifts during the retrace scan line.

INTERLEAVE

trace and retrace

With INTERLEAVE enabled scanner executes

trace/retrace pairs, alternately performing a

MAIN pair, then an INTERLEAVED pair.

Vertical Scan speed is 1/2 normal rate with

twice the number of lines.

INTERLEAVE

ENABLED

four Main and four Interleave

scan lines shown

INTERLEAVE

DISABLED

(standard)

four scan lines

(trace/retrace pairs)

shown

slow scan

direction

fast scan

direction

MAIN trace

and retrace

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