Filter XML datagram

The Filter XML datagram contains parameters for filters. This is an XML datagram. The type is XML0.

Format

These are the attributes in the <Filter> tag. The attribute values are only included as examples.

Example for echo sounder (ES):

<Filter ChannelID="EC150 155567-15 EC150-3C - ES_ES"">
	<Stages>
		<Stage1
			DecimationFactor="24"
			FilterGeneratorVersion="1.00"
			CentreFrequency="150000"
			BandWidth="1944.75"
			CorrectADSampleTimingInFilter="1"
			FilterLengthInFilterBanks="480"
			BitsToTruncateAfterMultiplication="4"
			FilterGain="1.39139e+06"
		/>
		<Stage2
			DecimationFactor="1"
		/>
	</Stages>
</Filter>

Description

The Filter XML datagram is identified by the <Filter> tag. The <Filter> tag holds two <Stages> tags.They are referred to as "Stage 1" and "Stage 2".The first datagram contains the filter parameters from the transceiver, while the second datagram contains the filter parameters from the EK80 program. Specific for ADCP there is one Filter XML datagram for each beam, i.e. for four ADCP beams there will be four Filter XML datagrams.

EC150 3C ADCP does not use these additional elements:

•

Notches="0"

•

TransitionBand="6117.23"

EC150 3C ADCP does not use these elements:

•

Note

For EC150–3C ADCP there will be one separate datagram for each of the ADCP beams. These are named beam0, beam1, beam2, beam3. Do not interpret these as single beam echo sounder datagrams.

Record of changes

•

1.23 New