VTI Instruments EX1401 User Manual page 97

EX1401 Operation of Data Logger
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EX_MEAS_INFO (dataset)
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Packet info - The upper 16 bits of the VRT Header word
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Packet size - The total number of 32-bit words in the packet
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Stream ID - The VRT Stream identifier
▪ OUI - VTI's IEEE Organizationally Unique Identifier
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Information class code - The VRT information class identifier
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Packet class code - The VRT packet class identifier
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Time seconds - The seconds portion of the packet timestamp
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Time picoseconds upper - The upper 32 bits of the
picoseconds portion of the packet timestamp
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Time picoseconds lower - The lower 32 bits of the
picoseconds portion of the packet timestamp
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Context Indicator Field - A mask indicating which items are
included in Context Fields
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Context Fields - A list of 32-bit words comprising the data
payload of the context packet
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EX_MEAS_FLOAT32 (dataset)
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Packet info - The upper 16 bits of the VRT Header word
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Packet size - The total number of 32-bit words in the packet
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Stream ID - The VRT Stream identifier
▪ OUI - VTI's IEEE Organizationally Unique Identifier
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Information class code - The VRT information class identifier
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Packet class code - The VRT packet class identifier
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Time seconds - The seconds portion of the packet timestamp
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Time picoseconds upper - The upper 32 bits of the
picoseconds portion of the packet timestamp
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Time picoseconds lower - The lower 32 bits of the
picoseconds portion of the packet timestamp
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Samples - A list of 32-bit floating point data samples
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Trailer - The 32-bit VRT trailer word
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EX_MEAS_INT32 (dataset)
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Packet info - The upper 16 bits of the VRT Header word
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Packet size - The total number of 32-bit words in the packet
▪
Stream ID - The VRT Stream identifier
▪ OUI - VTI's IEEE Organizationally Unique Identifier
▪
Information class code - The VRT information class identifier
▪
Packet class code - The VRT packet class identifier
▪
Time seconds - The seconds portion of the packet timestamp
▪
Time picoseconds upper - The upper 32 bits of the
picoseconds portion of the packet timestamp
▪
Time picoseconds lower - The lower 32 bits of the
picoseconds portion of the packet timestamp
▪
Samples - A list of 32-bit integer data samples
▪
Trailer - The 32-bit VRT trailer word
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