Teledyne GC-Pro/FID - Gas Chromatograph - Manual (Page 71)

GC-Pro FID Operation
Teledyne Analytical Instruments 57
A tag is limited to three characters (letters or numbers 0-9). A tag
can be assigned by touching any three keys provided in the on-screen
keypad after selecting the tag field for the relevant group. You must
press ENTER on the keypad to assign the tag before moving to another
setting or group, otherwise the tag will NOT be assigned.
To assign a range, touch the UP arrow button adjacent to the range
of the selected group.
Once all the required inputs have been made, select ENTER to save.
A confirmation window pops up to confirm the inputs or cancel.
Note: You can view the first of the Enabled Sxx on the Group
Setup screen for the respective Groups. If none of the Sxx
are enabled S** will be displayed. Details for enabling the
Sxx are given below.
It is possible to add or subtract concentration peaks to groups using
the SUM function available from the Group Select screen.
Selecting SUM from a selected group brings up an additional screen.