Face Dipstick 2200 Series, Operator'S Manual

Page: 65 / 107

Chapter 6 The 2277 Tablet Computer
6-5
CHANGING THE SCREEN BACKLIGHTING:
The number of hours of operation that you can expect to get will depend in part on how bright
you set the Tablet’s screen backlighting. For outdoors in full sunlight, set the backlighting to
max. If you are operating indoors or in shade, you can set the
backlighting to a lower setting, which will greatly extend the number
of hours of operation you can get from the Tablet. To change the
amount of backlighting, tap the “Shortcut to Backlight Ctrl” on the
Tablet’s desktop screen.
You can switch between the DFDC program and the Tablet’s “desktop” screen by tapping the
“Multiple Folders” icon in the bottom right corner of the screen.
This will allow you to change the backlighting and power level, and switch back to the DFDC
program quickly and easily.
OPERATING DURATION
With a fully charged Handle Battery and a fully charged Tablet battery, and with the screen
backlighting at 100%, you can expect to get more than 8 hours of operation.
If you use a lower backlighting level, you can double the length of time. If you will only be
measuring for a few hours, you can use max brightness. But in most cases, you don’t really need
max brightness. Use your head and change the backlighting level to whatever level you need.
The Tablet computer alone, without Handle Battery, will give from 3 to 6 hours of operation.
That's OK if you only need to collect a small amount of data, but you'll be much safer if you use
the Handle Battery. You don’t want to run out of power for your Tablet computer.
When you plug the Dipstick Handle Battery into the Tablet computer, does the small "Power
Indicator" change from black to red? If does, that means your Handle Battery is providing power
to the Tablet computer.
The computer will not start and run on a nearly depleted battery. If you deplete the battery, then
put it on charge, the computer must be charged for a long time before it will turn on. For this
reason, you cannot run a 2277 computer using only the Handle Battery for power, unless you are
willing to wait a long time for it to charge up. If you change the battery in a flashlight, hand-held
radio, or GPS, the device will instantly work. If your Cell phone goes completely dead, once you
connect it to an AC Adapter, it will turn on, even if it only has 1% or less power in the battery.
The 2277 computer will not. It needs to get something of a charge before it will start.
On the other hand, if the computer turns on, it will indeed run on a partially discharged battery,
and it will run until the computer’s battery is very very low. As stated above, the Handle battery
can extend the life of the computer battery. The computer does not like to boot up and start on a
nearly depleted battery, but once started, it will run just fine until the battery is completely dead.