Intermec Janus 2050 User Manual page 402

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Glossary
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 device.
scanner timeout
Maximum time the laser is on. The laser will automatically turn off if timeout
occurs before the trigger is released.
SEL
Select character. The character that requests permission for the controller to
send data to the polled device.
serial communications
With serial communications, data is transmitted one bit at a time over a single
line from one computer to another. Often serial communications link host
computers to terminals and PCs to printers.
serial communications parameters
Parameters that control serial communications from one computer to another,
such as baud rate and parity.
server
The computer that contains the drives, directories, files, and programs you
want to access. See also client.
SOM
Start of Message character. The first character in messages sent to or received
from the host.
SOP
Start of Program Block character. Sent by the host at the beginning of a block of
IRL program statements.
spotting beam
An aiming feature of a laser scanner. A small beam of light briefly shines on
the object being scanned, allowing the operator to position the scanner
correctly for a good read.
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