Calibration settings for Echolistener data

This page describes the settings, necessary to an Echoview calculation, on the Calibration page of the Variable Properties dialog box for acoustic variables derived from Echolistener data files.

We recommend you assess the suitability of the settings available on the Calibration pages for each acoustic variable. Some settings will be used to calculate datapoint values or ranges, others may be used during analysis or display of the data. The table below shows which settings are used for calculating datapoint values and ranges and which are used for other calculations. The tables also detail the parameters that are read from the data file and used to calculate range values.

Quantitative calculation/analysis requires calibrated data which is achieved using correct calibration setting values (rather than default values). An ECS file enables you to modify calibration settings for variables in a fileset.

Note: The (red) default values on the Calibration pages are for illustration purposes only and have not been read from your data file. Read About calibration settings for further information.

Table legend:

P	Setting is used in calculating datapoint values or ranges as indicated by the column heading.
	Setting is not used in calculating datapoint values (when green background) or ranges (when blue background) but may be used for other purposes, see Additional uses of Calibration settings
	Setting is not available for this variable

Echolistener data calibration

Setting	Datapoint value (Sv)	Datapoint range
Calibration page of Variable Properties dialog box
AbsorptionCoefficient	P
EcholistenerEchosounderConstant	P
CalibrationOffset	P
Frequency
SoundSpeed
TransmittedPulseLength
TwoWayBeamAngle
From data file
Start range	P	P
Range	P	P
Number of datapoints	P	P
Gain	P
Pulse height	P	P

Calibration settings for Echolistener data

Echolistener data calibration

See also