Calculation Interval dialog box

The Calculation Interval settings define the parameters that are used to calculate the biomass and the size distribution. You can base the calculations on sailed distance, elapsed time, or a number of pings.

How to open

The Calculation Interval parameters can accessed from two places in the user interface.

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The page is opened in the Information Pane Options dialog box.

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The dialog box is opened using the Calculation Interval button on the Setup menu.

The parameters are the same, it does not matter if you use the page or the dialog box.

Tip

To open the Information Pane Options dialog box, select the button on the Active menu. You can also select the Setup button in the relevant information pane.

Description

The biomass and size distribution values are calculated based on the echo data collected. Use the Calculation Interval settings to limit the source data used by these calculations. You can base the calculations on data collected

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within a sailed distance

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within a given time frame

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from a defined number of pings

The settings for Calculation Interval do not have any effect the biomass line.

Details

Distance

Select Distance to allow the EK80 export to make the calculations based on the echo data collected during a sailed distance.

Time

Select Time to make the calculations based on the echo data collected during the last elapsed seconds or minutes.

Ping

Select Ping to make the calculations based on the echo data collected during the latest number of Acoustic transmissions (pings).

Apply to All Channels

Check this box to apply the current setting to all the channels on your EK80 system. In this context, the term channel is used as a common term to identify the combination of transceiver, transducer and operating frequency.

Apply to All Layers

Check this box to apply the current setting to all the depth layers on your EK80 system. In this context, the phrase layer is used to describe the depth layers that may be defined for the EK80 echograms. Each layer is defined by its upper and lower depth limit.