4 glossary of terms – Campbell Scientific CR800 and CR850 Measurement and Control Systems User Manual
Page 204
Section 7. Installation
204
addressing systems that allow multiplexing of several sensors on a single
communications port, which makes for more efficient use of resources.
7.8.8.4 Glossary of Terms
Asynchronous
Indicates the sending and receiving devices are not synchronized using a
clock signal.
Baud rate
The rate at which data are transmitted.
Big Endian
"Big end first." Placing the most significant integer at the beginning of a
numeric word, reading left to right.
cr
Carriage return
Data bits
Number of bits used to describe the data, and fit between the start and
stop bits. Sensors typically use 7 or 8 data bits.
Duplex
Can be half or full. Full‐duplex is simultaneous, bidirectional data.
lf
Line feed
Little Endian
"Little end first." Placing the most significant integer at the end of a
numeric word, reading left to right.
LSB
Least significant bit (the trailing bit)
Marks and Spaces
RS‐232 signal levels are inverted logic compared to TTL. The different
levels are called marks and spaces. When referenced to signal ground,
the valid RS‐232 voltage level for a mark is ‐3 to ‐25, and for a space is
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