Teledyne 3290 - OEM percent oxygen analyzer - Manual (Page 22)

Operational Theory Model 3290
Teledyne Analytical Instruments 12
2.3 Electronics
2.3.1 General
The signal processing uses an Intel

micro-controller 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 temperature
compensated amplifier, micro-controller, analog to digital and digital to
analog converters are located on the Main PCB, which is mounted
vertically, just behind the front panel of the Control Unit.
2.3.2 Signal Processing
Figure 2-3 is a block diagram of the signal processing electronics
described below.