Campbell CR850, Operator'S Manual, Page: 446 / 566

Section 11. Glossary
446
terminal emulator
A command ‐ line shell that facilitates the issuance of low ‐ level
commands to a datalogger or some other compatible device. A
terminal emulator is available in most datalogger support software
available from Campbell Scientific.
thermistor
A thermistor is a resistive element whose change in resistance with
temperature is wide, stable, and well ‐ characterized. It can be used as a
device to measure temperature. The output of a thermistor is usually
non ‐ linear, so measurement requires linearization, usually by means of
the Steinhart ‐ Hart or another polynomial equation. Campbell Scientific
thermistors, models 107, 108, and 109, are linearized by Steinhart ‐ Hart
as implemented in the Therm107() , Therm108() , and Therm109()
instructions.
throughput
The throughput rate is the rate at which a measurement can be taken,
scaled to engineering units, and the reading stored in a data table. The
CR800 has the ability to scan sensors at a rate exceeding the throughput
rate. The primary factor affecting throughput rate is the amount of
processing specified by the user. In sequential ‐ mode operation, all
processing called for by an instruction must be completed before
moving on to the next instruction.
TTL
Transistor ‐ transistor logic. A serial protocol using 0 Vdc and 5 Vdc as
logic signal levels.
TLS
Transport layer security. An Internet communications security protocol.
toggle
To reverse the current power state.
UINT2
Data type used for efficient storage of totalized pulse counts, port
status (status of 16 ports stored in one variable, for example) or integer
values that store binary flags.