User`s guide

34 User’s Guide

Zooming

You may want to examine a chromatogram in more detail, or

zoom in on a portion of the chromatogram. To do this, drag a

box around the area of interest by holding down the left

mouse button and dragging the box until it highlights the

section of interest. Then release the mouse button. To move

quickly to the previous level of zoom, double-click on the

chromatogram. To zoom to the full chromatogram again after

multiple zooming operations, click the right-hand mouse

button anywhere in the chromatogram window, then select

Full Unzoom from the menu displayed. You can also execute

a full unzoom of your chromatogram with Ctrl-Z or shift-

double click in the chromatogram window. Once the

chromatogram is in a "zoomed" view, you can scroll it. See

Scrolling the chromatogram.

At the top of the chromatogram window is a display of Time

and Amplitude. These values change as you move the cursor

and reflect the time and amplitude of the trace where the

cursor is located. If you have more than one trace, you can

change the display to another trace by clicking on the

chromatogram trace with the mouse. If the traces are

displayed in different colors, the color of the Time and

Amplitude display will reflect the color of the trace displayed.

Scroll the chromatogram

Once you have zoomed in on a chromatogram, you can scroll

the chromatogram to the right or left without losing the zoom.

This is done by pressing the CTRL SHIFT keys down and

moving the mouse until the cursor changes to a "hand" and

dragging it to the left or right.

You can also scroll the X- or Y- axis to view features which

may be out of the range. To do this, press the CRTL SHIFT

keys down while the mouse cursor is outside the graph area,

yet near the axis of interest. The cursor will change to an

up/down arrow near the Y-axis, or a left/right arrow near the

X-axis. Moving the mouse in this mode will scroll the graph

up/down or left/right on the axis.

To restore the original view, in the chromatogram window,

click the right mouse button and then click Full Unzoom.