Campbell Scientific PC400 Datalogger Support Software - Manual (Page 223)

Appendix A. Glossary of Terms
this coordination is accomplished by synchronizing the transmitting and
receiving devices to a common clock signal (see Asynchronous).
T
Tab Windows – Some screens depict a series of related windows in a multi-
tabbed notebook format. When you click the file folder tab, the information on
the tab you chose will be displayed.
Tables – An entry in the status table that shows the number of user-created
data tables. (See also Data Table.)
Table-based Dataloggers – Table-based dataloggers store each record of data
that follows an output instruction in a table. Each separate occurrence of an
output instruction directs the datalogger to store the data in a separate table.
“Table-based” includes both “TD” table-data and “PB” PakBus versions of the
Edlog dataloggers as well as the CRBasic dataloggers.
Table Definitions – List of data available from a table-based datalogger. The
datalogger supplies this list on request. The tables are determined by the
datalogger program. The LoggerNet server must have a current version of the
table definitions to collect data from the datalogger.
Time Stamp – The date and time when data are stored in the datalogger.
TMStamp – An entry in the status table that shows the date and time the status
information was recorded.
Transaction – The exchange of data or information between two devices or
programs. For example, setting the clock in a datalogger requires a transaction
between the server and the datalogger.
U
Uncollectable Hole – Occurs when a hole in the data cache cannot be collected
from the datalogger before the data table wraps around and the records are
overwritten.
V
Variable Name – Edlog uses variable names in expressions. Variables are
another name for input location labels. For instance, in the equation TempF =
(TempC*1.8) + 32, TempC is an input location label and TempF is a new
location calculated from TempC. CRBasic dataloggers use variables for all
measurements, processing values, including variables to be used in Boolean
form as “high” or “low”.
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