Campbell-scientific LoggerNet Datalogger Support Software Manual de usuario Pagina 483

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Appendix A. Glossary of Terms
A
Advise See Data Advise
ASCII FileA computer file containing letters, numbers, and other characters
using the ASCII character encoding.
AsynchronousThe transmission of data between a transmitting and a
receiving device occurs as a series of zeros and ones. For the data to be read
correctly, the receiving device must begin reading at the proper point in the
series. In asynchronous communications, this coordination is accomplished by
having each character surrounded by one or more start and stop bits that
designate the beginning and ending points of the information (see
Synchronous). The transfer of information is not otherwise coordinated
between the sender and receiver.
Analog ChannelA terminal on the dataloggers wiring panel where leads for
analog signals are connected. The analog channels are designated single-ended
(SE) or differential (DIFF) on the wiring panel. Many sensors, such as
thermistor temperature probes and wind vanes, output analog signals.
Array-based DataloggerSee Mixed-array Datalogger.
B
Batch FilesAn ACSII text file that contains one or more DOS commands or
executable file commands. When the batch file is run, the commands in the
file are executed sequentially.
BatteryThis entry in the status table returns the datalogger battery voltage.
BaudThe rate at which a communication signal travels between two devices.
Binary FileA file based on software defined formatting. A binary file can
only be interpreted by the software programmed to decode the formatting.
This format is used for more efficient data storage than is provided by ASCII.
BMP (Block Mode Protocol)The communications protocol used by the
server to communicate with table-based dataloggers and RF modems.
Broadcast Part of the radio (RF) technique of polling remote radio modem
datalogger sites. A single modem sends a message (broadcast) that all affected
remotes hear and respond to.
C
Call-backWhen a datalogger is programmed for Call-back, it will
automatically call the host computer when a specified condition is met. The
computer must be set up to look for such an incoming call.
Call-back ID NumberA three-digit number that is used to identify what
datalogger has called the host computer. (Not available for Table-based
dataloggers.)
A-1
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