User Manual

30 • Write Commands
There are four column headings and three control buttons in
the GX-2009 Calibration Window.
•Gas
The Gas column shows the four detecti on channels, the
target gas for each channel, and the detection range full
scale value for each ch annel.
•Select
The Select column has a selection box for each channel
that allows you to select or deselect a channel for zero and
span adjustments.
• Auto Cal.
The Auto Cal. column displays the auto calibration values
for each channel. These values are retrieved from an
instrument when a connection is est ablished. They cannot
be changed in the Calibration Window.
• Current Readin g
The Current Reading column displays the current real time
gas readi ng for each channel.
• Zero B u tto n
Click Zero at the appropriate time to perform a zero (fresh
air) adjustment on the inst rument’s selected channels.
• Span Button
Click Span at the appropriate time to perfor m a sp an
adjustment on the instrument’s selected channels.
• Exit Calibration Button
Click Exit Calibration to close the GX-2009 Calibrat ion
Window and return to the Main Window.