Teledyne 450 2.2 Front Panel Display

There is one exception to this. The analog output voltage range is set by DIP Switches

on the A/D-I/O board as shown in Section 5.3.

The Teledyne API O3 Monitor features an RS-232 interface which can output the

instantaneous and/or average O3 data to another computer. It can also be used as a

command and status channel to allow a computer to control the Monitor.

2.2 Front Panel Display

This section describes the operator interface from the point of view of the front panel.

The front panel consists of a 2-line by 40-character alphanumeric display, 8 pushbuttons,

and 3 status LED’s. Each of these features is described below.

The display is divided into 4 main "fields": the Mode field in the upper left, the

Message/Test Function field in the top center, the ozone Concentration field consisting

of the most recent instantaneous ozone value field in the upper right, and the Menu field

which occupies the entire bottom line of the display. The Menu field is used to define the

function of the 8 buttons directly below the display. The buttons are then used for

selecting menu items and are also used for entering values such as alarm levels. A

typical display is shown in Figure 2.1.

<TST TST> MODE ALRMSTRM MSG CLR SETUP

UTO #1 TIME=15:58:21 O3=0.005

MODE

FIELD MESSAGE/TEST

MEASUREMENT FIELD CONCENTRATION

FIELD

MENU DEFINITIONS

FIGURE 2.1 - MODEL 450 FRONT PANEL

P/N 02395D1 Teledyne API Model 450 O3 Monitor Instruction Manual - Page 32