Specifications

Appendix A. Glossary
A-8
Seebeck Effect induces microvolt level thermal electromotive forces (EMF)
across junctions of dissimilar metals in the presence of temperature
gradients. This is the principle behind thermocouple temperature
measurement. It also causes small correctable voltage offsets in CR1000
measurement circuitry.
Send denotes the program send button in LoggerNet, PC400, and PC200W
datalogger support software.
serial a loose term denoting output or a device that outputs an electronic series
of alphanumeric characters.
SI Système Internationale The International System of Units.
signature a number which is a function of the data and the sequence of data in
memory. It is derived using an algorithm which assures a 99.998%
probability that if either the data or its sequence changes, the signature
changes.
single-ended denotes a sensor or measurement terminal where in the analog
voltage signal is carried on a single lead, which is measured with respect
to ground.
SMTP Simple Mail Transfer Protocol. A TCP/IP application protocol.
SNP Snapshot File.
state whether a device is on or off.
string a datum consisting of alpha-numeric characters.
support software include PC200W, PC400, RTDAQ, LoggerNet
synchronous the transmission of data between a transmitting and 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 synchronous communication, this coordination is
accomplished by synchronizing the transmitting and receiving devices to a
common clock signal (see Asynchronous).
table overruns skipped scans occurring when the CR23X program is too long
for the execution interval. Table overruns can cause errors in pulse
measurements.
task 1) grouping of CRBASIC program instructions by the CR1000. Tasks
include measurement, SDM, and processing. Tasks are prioritized by a
CR1000 operating in pipeline mode.
TCP/IP Transmission Control Protocol / Internet Protocol.
Telnet a software utility that attempts to contact and interrogate another
specific device in a network.
throughput the throughput rate is the rate at which a measurement can be
made, scaled to engineering units, and the reading stored in Final Storage.
The CR23X has the ability to scan sensors at a rate exceeding the
throughput rate (see SAMPLE RATE). The primary factor affecting
throughput rate is the amount of processing specified by the user. In