Yokogawa GC1000 Mark II Process Gas Chromatograph - Manual (Page 62)

<4. Chromatogram Window>
4-9
IM 11B03G03-03E
4.4 Changing the Scale and Scrolling the
Display
There are three scales on the chromatogram display: X-axis [sec], Y-axis [mV], and temperature
[°C]. These scales can be changed to the desired ones using the commands in the [Scale] menu
or Enlarge/Reduce buttons.
n Disabling and Enabling the Auto-scale Function
In the Chromatogram window scales are automatically set to display an overall view of the
chromatogram. This function is called “auto-scale”.
TIP
Changing the scale automatically disables the auto-scale function.
This section explains how to enable/disable the auto-scale function.
l Procedure
(1) To disable the auto-scale, click on either the [Auto Scale] command in the [Scale] menu or
the Auto-scale button on the toolbar. This enables the auto-scale, causing the check mark (
) next to the [Auto Scale] command to disappear and the Autoscale button to appear not-
depressed.
(2) To enable the auto-scale, click again on either the [Auto Scale] command in the [Scale]
menu or the Auto-scale button on the toolbar. This enables the auto-scale function again,
causing the check mark ( ) next to the [Auto Scale] command to appear and the Auto-scale
button to appear depressed.
n Changing the Scale
l Enlarge/Reduce Buttons
Each clicking on the Enlarge/Reduce buttons changes the scale as shown in the following table.
buttons: reduces the scale
buttons: enlarges the scale
Scale Available Scale Increments
X-axis scale (sec) 0.2→0.5→1→2→5→10→20→50→100→200→500→1000→
2000→5000→10000→20000→50000
Y-axis scale (mV) 0.1→0.2→0.5→1→2→5→10→20→50→100→200→500→1000
Temperature (°C) 10→50→100→200
The scales are common to both chromatograms and graphs of temperature data.
n Scrolling the Display
Scrolling the display to view the chromatogram not shown on the display, typically when the
entire chromatogram cannot fit in the display because of, for example, scale enlargement.
The display can be scrolled using either of the following two methods.
l Method 1
Click on the , , , or button at either end of the scroll bars. The chromatogram scrolls in
the direction of the arrow by one increment of the scale with each click.
4th Edition : Mar. 21, 2012-00