processing memory.
Term. dc
See Vdc
(p. 532).
Term. DCE
Data Communication Equipment. While the term has much wider meaning,
in the limited context of practical use with the CR1000, it denotes the pin
configuration, gender, and function of an RS-232 port. The RS-232 port on
the CR1000 is DCE. Interfacing a DCE device to a DCE device requires a
null-modem cable. See Term. DTE
(p. 514).
Term. desiccant
A hygroscopic material that absorbs water vapor from the surrounding air.
When placed in a sealed enclosure, such as a datalogger enclosure, it prevents
condensation.
Term. DevConfig software
Device Configuration Utility
(p. 111), available with LoggerNet, RTDAQ,
PC400, or at www.campbellsci.com/downloads
(http://www.campbellsci.com/downloads).
Term. DHCP
Dynamic Host Configuration Protocol. A TCP/IP application protocol.
Term. differential
A sensor or measurement terminal wherein the analog voltage signal is
carried on two leads. The phenomenon measured is proportional to the
difference in voltage between the two leads.
Term. Dim
A CRBasic command for declaring and dimensioning variables. Variables
declared with Dim remain hidden during datalogger operations.
Term. dimension
Verb. To code a CRBasic program for a variable array as shown in the
following examples:
o DIM example(3) creates the three variables example(1), example(2), and
example(3).
o DIM example(3,3) creates nine variables.
o DIM example(3,3,3) creates 27 variables.
Term. DNS
Domain name system. A TCP/IP application protocol.
513
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