Teledyne 3190 manual Electronics, General, Signal Processing

Trace Oxygen Analyzer Operational Theory 2

Figure 2-2. Characteristic Input/Output Curve for a Micro-Fuel Cell

2.3Electronics

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 temperature compen- sated amplifier, microcontroller, 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.

Teledyne Analytical Instruments 2-5