User Manual

21
that it is possible to distinguish the desired DS signal from background radio frequency (RF)
noise and it can withstand some interference. DS systems typically use only one of the
available channels and do not change channels in the course of normal operation. If there is
interference on one of the channels, the system is configured to use a different channel. There
are three non-overlapping channels for DS systems governed by the FCC.
DNS: Domain name system. A static, hierarchical name service for TCP/IP hosts. The network
administrator configures the DNS with a list of host names and IP addresses, allowing users of
workstations configured to query the DNS to specify remote systems by host names rather than
IP addresses.
e
embedded digit strings: Strings of digits (usually three digits in length) that contain a
particular digit that is being trained; embedded digit strings are used during enrollment and
update training to train digits that are used in a particular task; for example, for the digit 2,
the embedded digit strings might be 020, 212, and 222; so, to fully train the digit 2, the
operator will not only have to say the digit four times by itself, but he or she will also have to
repeat all of the embedded digit strings that contain the digit 2. Also, if the task that is being
run contains decimal points (i.e. the word "point"), the embedded digit strings will contain
strings with the word "point" in them (e.g. 2 point 2).
enrollment training: The process of having a new operator train all of the vocabulary words
that are used in a particular task at a specific site.
Ethernet: A type of local area network that can link up to 1,024 nodes in a bus network and
can transfer data at a rate of 10 Mb per second. Ethernet uses carrier sense multiple access
with collision detection (CSMA/CD) to maintain network stability in the event that two devices
attempt to access the network at the same time.
exception: Occurs when there are not enough product units at a pick location for an operator
to fulfill a pick. This does not necessarily mean that the units are not in the warehouse, just
that they are not at the pick location. Exceptions are also referred to as scratches, reported
shorts, cuts, markouts, or redlines.
f
firmware: The system software stored in a computer's read-only memory (ROM) or elsewhere in
the computer's circuitry, such as the BIOS chips in IBM compatible computers.
flash files: Located in a terminal's flash memory, these files contain the terminal's operating
system files and the Vocollect Talkman software.
flash memory: A special type of read-only memory (ROM) that enables users to upgrade the
information contained in the memory chips; also referred to as flash BIOS and flash EPROM. In a
Talkman® terminal, the flash memory is a memory chip that retains its content without power.
frequency hopping: In a spread spectrum frequency hopping radio system, the radio signal
"hops" from frequency to frequency with a specific band. Both the transmitter and the receiver
must know the hopping pattern, called the channel.