Prerequisites
In order to calibrate EK80 for velocity measurements the following equipment and conditions must be in place.
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Global Positioning System (GPS) input must be received. |
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KM Binary datagram must be received. |
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An ADCP transceiver or transducer must be installed. |
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Time synchronization using NTP servers for ADCP transceiver and EK80 Processor Unit. |
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A suitable location has been selected. |
Context
The setup requirements for the EK80 processor unit for velocity measurement calibration are provided through this procedure.
Procedure
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On the Operation menu, set Operation to Normal. |
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In the Normal Operation dialog box, set up the operating parameters for the channel you wish to calibrate. |
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Open the Operation menu. |
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Select Normal Operation.
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In the Normal Operation dialog box set the parameters accordingly:
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Set Pulse Type to LFM-Up for the appropriate ADCP channel. In LFM Up the transmitted pulse starts using the lower frequency in the range, and ends with the upper frequency. "LFM" means "Linear Frequency Modulated".
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Set Start Frequency and End Frequency to values permitted by your transducer. Start Frequency and End Frequency for current velocity calibration is 138 kHz and respectively 162 kHz.
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Set Max Current Speed to the default (3.0 m/s) value. |
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Set Depth Cell Size to minimum 8 m. |
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Select Ping Interval.
Ping Interval is located on the Operation menu.
Set the value 1000 ms
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Select OK to save the selected setting and close the dialog box. |
Further requirements
Proceed to setup the files for storing velocity measurement calibration data.
