Fluke 287 Fluke 287 and 289 Multimeter Users Manual - Page 22
Controlling Meter Power, Powering the Meter On and Off Manually, Battery Level Indicator
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287/289 Users Manual Controlling Meter Power The Meter is powered by six AA batteries and controlled through a front panel power switch and internal circuits designed to help conserve battery power. The following sections describe several techniques for controlling Meter power. Powering the Meter On and Off Manually With the Meter off, press O to turn on the Meter. Pressing O while the Meter is on causes it to turn off. Note Collected data is retained when the Meter is turned off while in record, MIN MAX record, or Peak record modes. When the Meter is next turned on, the dispay shows the collected data in stopped mode. Pressing the softkey labeled Save will save the data. Battery Level Indicator The battery level indicator in the upper left-hand corner of the display indicates the relative condition of the batteries. Table 6 describes the various battery levels the indicator represents. 12 Table 6. Battery Level Indicator Indication Battery Capacity B C D E F[1] Full capacity ¾ capacity ½ capacity ¼ capacity Almost empty (less than one day) [1] When critically low, a "Replace batteries" pop-up message appears 15 seconds before the Meter shuts down. The Meter will display a "Batteries low" message whenever the battery level will not support a selected function. Automatic Power-Off The Meter automatically turns off if the rotary switch is not moved or a button is not pressed for 15 minutes (default). Pressing O will turn the Meter back on after it is powered off automatically. To change the timeout period or completely disable automatic power-off, refer to "Setting Backlight and Auto Off Timeouts" later in this manual. Battery Saver Mode If Auto off is enabled (set to a time period), and MIN MAX record, Peak record, Recording, or AutoHold is enabled, the Meter will enter a battery-saver mode if a push-button is not pressed or the rotary switch is not moved for a set period of time. For the