Intermec Janus 2020 User Manual page 544

JANUS 2020 Hand-Held Computer User's Manual
resume
When you press
where it was when you turned it off. If a program was running when you
turned off the reader, the program continues running from the same point
when you turn the reader back on.
RF data collection system
Radio frequency data collection system in which the individual components
communicate with each other by radio signals.
RFPH
The RF protocol handler, which enables a JR2020 to communicate as an end
device in an RF network. RFPH lets the reader transmit and receive data as
specified by the RF communications protocol.
rolled-over memory
A type of dynamic random access memory (DRAM). The reader has 1MB of
battery-backed DRAM. From the memory existing between the 640K and 1MB
boundaries, 384K is remapped or "rolled-over" above 1MB to create the RAM
drive. If you do not need the RAM drive, you can access rolled-over memory
as extended memory through a device driver or an application that uses
HIMEM.SYS.
ROM
Read only memory. Usually a small memory that contains often-used
instructions, such as microprograms or system software. ROM is programmed
during memory fabrication and cannot be reprogrammed.
ROM drive
A read-only memory drive. Drives C and D are ROM drives implemented in
flash memory on the reader.
Scanner mode
Defines how the scanner operates when the trigger is pulled. There are two
types of modes: One-Shot or Automatic. One-Shot mode requires you to pull
the trigger each time you want to scan a bar code. Once you scan a bar code,
the scanner turns off. Automatic mode allows you to pull the trigger once and
scan a series of bar codes. When you release the trigger, the scanner turns off.
To scan the same bar code more than once, you must release the trigger or scan
a different bar code before attempting a second scan.
scanner timeout
Maximum time the laser is on. The laser will automatically turn off if timeout
occurs before the trigger is released.
G-22
G
to turn the reader back on, the reader resumes exactly