Teledyne 3060e - Ultra Trace oxygen analyzer User Manual

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2-14

Model 3060E

Chapter 2

Teledyne Electronic Technologies

Analytical Instruments

Digital Circuit Board

The digital PCB is a general purpose microcomputer used to control all
functions of the analyzer. The analog input PCB and the analog output PCB
plug directly into connectors located on the digital PCB. In addition to
controlling these analog PCBs, the digital board performs the following
functions:

1. Provides valve control commands for the sampling system.

2. Processes input from the control panel pushbuttons.

3. Provides signals for the selectable alarms.

4. Processes serial I/O functions (RS-232 data). The following serial

interface default parameters are used:

Defaults

1200 Baud

Fixed

8 Bits
No Parity
1 Stop Bit

5. Controls the LCD and the LED displays.

Display Screens

There are two display screens on the front panel of the analyzer:

LCD

This screen is a dot-matrix display located on the control module of the
analyzer. It displays all of the menus and commands for the user to
control the system and is the user interface for system operations.

LED

This screen is a 7-segment display located on the front panel of the
analyzer, above the control module. This screen displays only oxygen
concentration, but it is large and bright to allow the operator to read it
at a greater distance. A dimmer switch for this display is located on the
display PCB behind the front panel.