<?xml version="1.0" encoding="UTF-8"?>
<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1P00.sch" 
    schematypens="http://purl.oclc.org/dsdl/schematron"?>
<?xml-model href="https://pds.nasa.gov/pds4/msn/v1/PDS4_MSN_1P00_1310.sch" 
   schematypens="http://purl.oclc.org/dsdl/schematron"?>
<Product_Observational
   xmlns="http://pds.nasa.gov/pds4/pds/v1"
   xmlns:msn="http://pds.nasa.gov/pds4/msn/v1"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="
       http://pds.nasa.gov/pds4/pds/v1         https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1P00.xsd
     http://pds.nasa.gov/pds4/msn/v1        https://pds.nasa.gov/pds4/msn/v1/PDS4_MSN_1P00_1310.xsd
     ">
    <Identification_Area>
        <logical_identifier>urn:nasa:pds:vg2-pra-nep:data-browse-48sec:t890827</logical_identifier>
        <version_id>1.0</version_id>
        <title>Voyager 2 Neptune PRA Browse 48 Second Data for 1989-08-27</title>
        <information_model_version>1.25.0.0</information_model_version>
        <product_class>Product_Observational</product_class>
        <Citation_Information>
            <publication_year>1991</publication_year>
            <description>                                             
                This file contains browse data from the Voyager 2 Neptune West Longitude System during                 
                the Neptune encounter.</description>
            <List_Author>
                <Person>
                    <given_name>David Robert</given_name>
                    <family_name>Evans</family_name>
                    <Affiliation>
                        <organization_name>Laboratory for Atmospheric and Space Physics</organization_name>
                        <organization_rorid>https://ror.org/01fcjzv38</organization_rorid>
                    </Affiliation>
                </Person>
            </List_Author>
            <List_Author>
                <Person>
                    <given_name>Michael L.</given_name>
                    <family_name>Kaiser</family_name>
                    <Affiliation>
                        <organization_name>Goddard Space Flight Center</organization_name>
                        <organization_rorid>https://ror.org/0171mag52</organization_rorid>
                    </Affiliation>
                </Person>
            </List_Author>
        </Citation_Information>
        <Modification_History>
            <Modification_Detail>
                <modification_date>2026-07-23</modification_date>
                <version_id>1.0</version_id>
                <description>This product, T890827.DAT, was originally released as part
                    of the PDS3 VG2-N-PRA-4-SUMM-BROWSE-48SEC-V1.0 data set. The metadata 
                    have been migrated to PDS4. The data themselves are unchanged.</description>
            </Modification_Detail>
        </Modification_History>
    </Identification_Area>
    <Observation_Area>
        <Time_Coordinates>
            <start_date_time>1989-08-27T00:00:47.000Z</start_date_time>
            <stop_date_time>1989-08-27T23:59:58.000Z</stop_date_time>
        </Time_Coordinates>
        <Primary_Result_Summary>
            <purpose>Science</purpose>
            <processing_level>Calibrated</processing_level>
            <Science_Facets>
                <domain>Magnetosphere</domain>
                <discipline_name>Fields</discipline_name>
                <facet1>Electric</facet1>
                <facet2>Waves</facet2>
            </Science_Facets>
            <Science_Facets>
                <domain>Magnetosphere</domain>
                <discipline_name>Fields</discipline_name>
                <facet1>Magnetic</facet1>
                <facet2>Waves</facet2>
            </Science_Facets>
        </Primary_Result_Summary>
        <Investigation_Area>
            <name>Voyager</name>
            <type>Mission</type>
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:investigation:mission.voyager</lid_reference>
                <reference_type>data_to_investigation</reference_type>
            </Internal_Reference>
        </Investigation_Area>
        <Observing_System>
            <Observing_System_Component>
                <name>Voyager 2</name>
                <type>Host</type>
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument_host:spacecraft.vg2</lid_reference>
                    <reference_type>is_instrument_host</reference_type>
                </Internal_Reference>
            </Observing_System_Component>
            <Observing_System_Component>
                <name>Planetary Radio Astronomy Receiver</name>
                <type>Instrument</type>
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument:vg2.pra</lid_reference>
                    <reference_type>is_instrument</reference_type>
                </Internal_Reference>
            </Observing_System_Component>
        </Observing_System>
        <Target_Identification>
            <name>Neptune</name>
            <type>Planet</type>
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:target:planet.neptune</lid_reference>
                <reference_type>data_to_target</reference_type>
            </Internal_Reference>
        </Target_Identification>
        <Discipline_Area>
            <msn:Mission_Information>
                <msn:mission_phase_name>Neptune Encounter</msn:mission_phase_name>
            </msn:Mission_Information>
        </Discipline_Area>
    </Observation_Area>
    <Reference_List>
        <Source_Product_External>
            <external_source_product_identifier>VG2-N-PRA-4-SUMM-BROWSE-48SEC-V1.0:T890827:T890827.DAT</external_source_product_identifier>
            <reference_type>data_to_calibrated_source_product</reference_type>
            <doi>10.17189/1519986</doi>
            <curating_facility>NASA Planetary Data System</curating_facility>
            <description>This is the first version of this product converted to PDS4. The DOI provided
                references the PDS3 source data set.</description>
        </Source_Product_External>
    </Reference_List>
    <File_Area_Observational>
        <File>
            <file_name>T890827.DAT</file_name>
            <creation_date_time>2002-01-31T16:27:29.000Z</creation_date_time>
            <file_size unit="byte">999492</file_size>
            <md5_checksum>2cc01175c20dcd9cdb74f3b78c7362d5</md5_checksum>
            <comment>This data file is unmodified from the PDS3 version.</comment>
        </File>
        <Table_Binary>
            <offset unit="byte">0</offset>
            <records>1677</records>
            <Record_Binary>
                <fields>3</fields>
                <groups>1</groups>
                <record_length unit="byte">596</record_length>
                <Field_Binary>
                    <name>CTIME</name>
                    <field_number>1</field_number>
                    <field_location unit="byte">1</field_location>
                    <data_type>IEEE754MSBDouble</data_type>
                    <field_length unit="byte">8</field_length>
                    <unit>s</unit>
                    <description>
                        Time column.  This field contains time in seconds
                        elapsed since Jan 1, 1966 00:00:00.000Z without
                        accounting for leap seconds.</description>
                    <Special_Constants>
                        <missing_constant>1.7e308</missing_constant>
                    </Special_Constants>
                </Field_Binary>
                <Field_Binary>
                    <name>PDSTIME</name>
                    <field_number>2</field_number>
                    <field_location unit="byte">9</field_location>
                    <data_type>ASCII_String</data_type>
                    <field_length unit="byte">24</field_length>
                    <unit>PDS TIME</unit>
                    <description>
                        Date/Time string of the form
                        yyyy-mm-ddThh:mm:ss.sss such that the
                        representation of the date and time for
                        Jan 01, 2000 00:00:00.000 would be:
                        2000-01-01T00:00:00.000Z where Z indicates
                        Universal Time (also known as Zulu time).</description>
                </Field_Binary>
                <Field_Binary>
                    <name>SC_MODE</name>
                    <field_number>3</field_number>
                    <field_location unit="byte">33</field_location>
                    <data_type>SignedMSB4</data_type>
                    <field_length unit="byte">4</field_length>
                    <description>SPACECRAFT MODE (0-31)</description>
                    <Special_Constants>
                        <missing_constant>0</missing_constant>
                    </Special_Constants>
                </Field_Binary>
                <Group_Field_Binary>
                    <repetitions>70</repetitions>
                    <fields>2</fields>
                    <groups>0</groups>
                    <description>Left-hand and right-hand polarized data pairs for PRA low-band channels C131-C200</description>
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                    <group_length unit="byte">560</group_length>
                    <Field_Binary>
                        <name>LHP</name>
                        <field_location unit="byte">1</field_location>
                        <data_type>SignedMSB4</data_type>
                        <field_length unit="byte">4</field_length>
                        <unit>mB</unit>
                        <description>PRA left-hand polarized low-band channel data</description>
                        <Special_Constants>
                            <missing_constant>0</missing_constant>
                        </Special_Constants>
                    </Field_Binary>
                    <Field_Binary>
                        <name>RHP</name>
                        <field_location unit="byte">5</field_location>
                        <data_type>SignedMSB4</data_type>
                        <field_length unit="byte">4</field_length>
                        <unit>mB</unit>
                        <description>PRA right-hand polarized low-band channel data</description>
                        <Special_Constants>
                            <missing_constant>0</missing_constant>
                        </Special_Constants>
                    </Field_Binary>
                </Group_Field_Binary>
            </Record_Binary>
        </Table_Binary>
    </File_Area_Observational>
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