ODiSI 6
ODiSI 6
User’s Guide
Page 5
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Glossary
Term
Definition
Channel
A port on the front panel of the ODiSI instrument. There is a
maximum of 8 channels on an ODiSI.
Configuration
A set of Luna defined hardware and software parameters that
change the measurement capabilities of the ODiSI instrument.
Measurement parameters that change between configurations
include (but are not limited to): measurement rate, maximum
sensor length, and gage pitch. The ODiSI software
automatically selects the fastest measurement rate based on
the maximum sensor length detected and user-selected Gage
Pitch.
Gage
Subset of a fiber sensor that is used to make a single strain or
temperature measurement. A fiber sensor is divided into
numerous gages which provide distributed measurements of
strain or temperature along the fiber.
Gage Pitch
Length of fiber between the center of a single gage and the
center of a neighboring gage.
High-Definition
(HD) Sensor
A fiber sensor that provides a unique Rayleigh scatter signature
that the ODiSI instrument can use to make distributed strain or
temperature measurements.
Measurement
Rate
This is the rate (in Hz) at which the ODiSI provides strain or
temperature measurements.
ODiSI
Measurement
Streaming
Protocol (OMSP)
JSON based protocol for the transfer of ODiSI strain or
temperature data to another PC.
Sensor
Key/Reference
Data set containing the unique Rayleigh scatter pattern of a
single fiber sensor. This is compared to measurement scans to
calculate strain or temperature. When a sensor is rekeyed, a
new reference data set is captured. Once installed or
generated, these files are stored in the Sensor Repository on
the ODiSI controller.
Standard Length
Remote Module
Supports sensor lengths from 1 m to 20 m.
Extended Length
Remote Module
Supports sensor lengths from 1 m to 50 m.
RLC
Ruggedized LC connector. These connectors are used for the
connections between the standoff cable and ODiSI instrument
as well as between the standoff cable and the remote module.
