2000-OSM, F1
G-3
GLOSSARY (continued)
host link
serial communications link which allows the transmitting of analysis results to the
host computer
integer
whole numbers that do not contain decimal points
I/O
Input/Output
LCD
Liquid
Crystal
Display
LED
Light Emitting Diode
LL
Low Limits, entered into a component table; when a component's
measured and calculated value falls below the LL value, an alarm is
generated
LO COMM
Local Communication Module PCB; optional PCB in the GCC that makes the
analyzer communications network possible (sometimes written LOCOM)
LSV
Liquid Sample Valve; used to inject small amounts of liquid into the
sample column
method table
operator-entered data specifying the name, retention time, key designation,
response factor, low and high limits, and calibration concentrations of the various
elements of an analysis; also specifies when, how, and under what conditions the
method of data collection is to proceed
microprocessor
the semiconductor circuit containing the central processing unit functions
noise
any unwanted signal superimposed upon a useful signal which tends to obscure
the desired information
numeric field
field that accepts number entries
“Panic” key
nickname for F1 key directly under the screen (soft key); pressing this key will
return the display to the Background screen without changing any current values
in memory; may need press it several times consecutively, depending on where
the current screen relative to the Background screen
PCB
Printed Circuit Board
peak area
method of measurement in which total peak area beneath the peak
envelope is used to calculate the concentration
peak discrimination
the non-linear unequal dilution of hydrocarbons in the column train
peak height
method of measurement in which peak maximum is used to calculate peak
concentration
PID
proportional-integral-derivative; refers to a control method in which the
controller output is proportional to the error, its time history, and the rate
at which it is changing.