Fluke 189 — understanding Battery Management and Backlight Features [17/96]

Превью страниц Страница 17 / 96

Getting Acquainted

Battery Considerations

2-3

Automatic Backlight Off

Press T to select the backlight level (low, high, or off.) In

low or high, the backlight turns off automatically after a

given period. This period is also preset to 15 minutes and

can be set to a maximum of 99 minutes from the setup

menu. If the period is set to 0, the backlight is on

indefinitely and can only be turned off by pressing T or

turning the meter off.

Note

See Chapter 5 for power off and backlight off

setup information.

Low Battery Indication

A constant battery icon ( B) in the upper left corner of

the display notifies you that the batteries are low and

should be replaced.

WWarning

To avoid false readings, which could lead to

possible electric shock or personal injury,

replace the batteries as soon as the battery

icon ( B) appears.

A flashing battery icon means that battery failure is

imminent. The backlight cannot be used in this condition.

MIN MAX and FAST MN MX features turn off. For Model

189, logging and communications also cease.