User manual

Chapter 3: Getting to Know the 8515
The Internal Backup Battery
Psion Teklogix 8515 Vehicle-Mount Computer User Manual 21
3.1 The Internal Backup Battery
The 8515 Vehicle-Mount Computer is equipped with an internal battery that will provide
backup power to the unit for up to 30 seconds of normal operation. The display will be blank
during this time. After 30 seconds, the unit will shut off to preserve the contents of RAM.
The backup battery provides one hour of memory backup. For configuration information,
please see “Power Properties” on page 74; for specifications, see “Internal Lithium-Polymer
Battery” on page 135.
The backup battery is not
user accessible. It must be replaced by authorized Psion Teklogix
personnel.
3.2 The Stylus
The stylus is supplied with a holder with double-sided adhesive tape so that it can be at-
tached wherever is most convenient for you.
3.3 The Keyboard
The 8515 provides a 58-key QWERTY or ABC alphanumeric keyboard layout.
Most of the keys on these keyboards operate much like a desktop computer. If a key or key
function is not consistent with the PC keyboard, the differences are noted.
3.3.1 Modifier Keys
The [SHIFT], [CTRL], [ALT], [BLUE] ad [ORANGE] keys are modifier keys. Pressing a
modifier key changes the function of the next key pressed. For example, a square bracket is
printed in orange print above the [4] key. Pressing the [ORANGE] key followed by the [4]
key displays a square bracket rather than the number 4.
Note: A soft keyboard that is a replica of the external keyboard is available. Refer to
“Input Panel” on page 60 for details.