Symbol Series 3800, Reference Manual

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6-2
Series 3800 Product Reference Guide
When to Replace or Recharge the Battery
The Series 3800 terminals provide two types of indicators to notify you when battery power
is running low: warning messages and modified cursors. These indicators may be changed or
disabled by an application.
!
LOW BATTERY - When the battery is low, the cursor changes as shown in Table 6-
1. If ERR300 is loaded, the message LOW BATTERY also appears. At this level the
terminal continues to operate, but there is probably less than 1 hour of usable power
left.
!
VERY LOW - When the power is very low, the REPLACE CELLS message appears
and the system powers off. Replace an alkaline battery or recharge a NiCd battery
before attempting to use the terminal. If the battery is not immediately recharged or
replaced, data may be lost.
Table 6-1. Cursor Indicators
Backup Batteries
To prevent data loss during battery replacement, the terminal utilizes a lithium battery as a
backup. The backup battery provides sufficient power to preserve memory contents for
approximately 15 minutes while the primary battery is replaced. The backup battery does not
provide enough power to operate the terminal. On receiving a low battery message, replace
or recharge the primary batteries immediately.
Keyboard State Cursor Character
c
f
(inverted caret) (inverted solid caret)
(caret) (solid caret)
(up arrow) (solid up arrow)
(down arrow) (solid down arrow)
(underline c) (inverse c)
(underlined f) (inverse f)
Low Battery
Unshifted
Shifted
Momentary Shifted
Momentary Unshifted
Control
Function