Model 200E Instruction Manual Frequently Asked Questions & Glossary
parts that acts as a computer hard disk drive under ! DOS with disk drive label “C”. DOC
chips come with 8 mb space in the E-series analyzer standard configuration but are
available in larger sizes
DOS - Disk Operating System, the operating system underlying the M200E firmware. The E-
series analyzers use DR DOS.
EEPROM - Also referred to as a FLASH chip. Used to store the analyzer configuration and
internally labeled and handled as “disk drive B:”
FEP - Acronym for Fluorinated Ethylene Propylene polymer, one of the polymers that
du Pont markets as Teflon
®
(along with !PFA and !PTFE).
FLASH - Flash PFA is used as tubing material in the M200E.memory is non-volatile, solid-
state memory
I
2
C bus – read: I-square-C bus. A serial, clocked serial bus for communication between
individual analyzer components
IC – Acronym for Integrated Circuit, a modern, semi-conductor circuit that can contain
many basic components such as resistors, transistors, capacitors etc in a miniaturized
package used in electronic assemblies.
iDAS - Acronym for Internal Data Acquisition System, previously referred to as DAS.
LED - Acronym for Light Emitting Diode.
PCA - Acronym for Printed Circuit Assembly, this is the ! PCB with electronic components
installed and ready to use
PCB - Acronym for printed circuit board, the bare circuit board without components
PLC – Acronym for programmable logic controller, a device that is used to control
instruments based on a logic level signal coming from the analyzer
PFA – Acronym for Per-Fluoro-Alkoxy, an inert polymer. One of the polymers that du Pont
markets as Teflon
®
(along with !FEP and !PTFE).
PTFE – Acronym for Poly-Tetra-Fluoro-Ethylene, a very inert polymer material used to
handle gases that may react on other surfaces. One of the polymers that du Pont markets
as Teflon
®
(along with !PFA and !FEP). PTFE is used as the material for the ozone air filter
as well as the sample gas filter.
PVC – Acronym for Poly Vinyl Chloride, a polymer used for downstream tubing in the
M200E.
RS-232 - An electronic communication protocol of a serial communications port
RS-485 - An electronic communication protocol of a serial communications port
TCP/IP - Acronym for Transfer Control Protocol / Internet Protocol, the standard communi-
cations protocol for Ethernet devices and the Internet
VARS - Acronym for variables, the variables menu or settings of the analyzer
044100102 Rev A 31
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