Teledyne 3300TB, Operating Instructions Manual, Page: 22 / 51

Trace Oxygen Analyzer Operational Theory
Teledyne Analytical Instruments 9
for the combined zero offsets of the cell and the electronics. (The
electronics is zeroed automatically when the instrument power is turned
on.)
Figure 2-3: Characteristic Input/Output Curve for a Micro-Fuel
Cell
2.3 Electronics
2.3.1 General
The signal processing uses an Intel
®
microcontroller with on-board
RAM and ROM to control all signal processing, input/output, and
display functions for the analyzer. System power is supplied from a
universal power supply module designed to be compatible with most
international power sources.
The power supply circuitry is on the Power Supply PCB, which is
mounted vertically, just behind the rear panel of the Control Unit.
The signal processing electronics including the sensor amplifier,
microcontroller, analog to digital, and digital to analog converters are