Teledyne 4220 Setup Options Exit to Quit Status Report Setup LCD Backlight

4220 Flow Meter

Section 2 Programming

Press Exit to leave the program. Then press Enter and reselect SETUP. The Setup menu will reappear:

SETUP OPTIONS: 'EXIT' TO QUIT

• STATUS • • REPORT SETUP • • LCD BACKLIGHT •

SET CLOCK, SITE ID, MEASUREMENT SETUP, PROGRAM LOCK, PROGRAM are off-screen and can be reached with the arrow keys. Select LCD BACKLIGHT with the arrow key. Press Enter. The following will appear:

LCD BACKLIGHT MODE

• KEYPRESS TIMEOUT • • CONTINUOUS • • OFF •

KEYPRESS TIMEOUT will cause the backlight to be turned on whenever you press a key on the keypad (other than On and Off). An internal timer is started that will keep the backlight on for approximately two minutes after you press a key.

Each time you press a key, the timer is restarted, so the backlight will never go off as long as you continue to program the flow meter, with keystrokes coming less than two minutes apart. At the end of programming, the backlight will go out, and will stay out until you start to program again.

This feature is designed to conserve battery power by de-ener- gizing the backlight when it is not needed. The backlight is still available if it is necessary to program in a dark environment, such as a manhole. We recommend using this selection if the flow meter is battery-powered, but installed in an environment where the lighting is poor.

CONTINUOUS will cause the backlight to be lit continuously. Where the flow meter is powered by an AC power supply, battery life considerations do not intervene. If the backlight makes the display easier to read, use it. Do not use CONTINUOUS in any installation that is battery-powered, as it will cause rapid dis- charge of the battery.

OFF will keep the backlight feature turned off under all circum- stances. Select this option for maximum battery life in installa- tions where there is sufficient ambient light to read the display without the backlight feature.

Press Enter. The SETUP menu will return. This time move the flashing cursor from LCD BACKLIGHT to LANGUAGE.

When LANGUAGE appears on your display, you may select an alternate language for programming. The other language depends on how the flow meter was ordered. The following display will appear:

LANGUAGE

• ENGLISH • • (second language, as ordered) •

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