Nanometrics Data Formats Reference Guide

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Chapter 3: Private Data Streams 3.3.5.2 Decompressed Data Packets This message contains decompressed time-series data in fixed-length blocks (usually one second). Header: 4 byte int Signature = 0x7ABCDE0F 4 byte int Data type = 4 4 byte int Data length = 20 + 4 * N, where N = number of samples Content: 4 byte int Channel key (same as in Channel List message) 8 byte double Time of first sample (seconds since January 1, 1970) 4 byte int Number of samples in this packet = N. 4 byte int Sample rate (samples per second). N * 4 byte int Samples as 32-bit integers 3.3.5.3 Trigger Packet Trigger messages contain information on triggers detected by the Naqs internal Sta/Lta trigger-detection system. Header: 4 byte int Signature = 0x7ABCDE0F 4 byte int Data type = 5 4 byte int Data length = 56 Content: 12 bytes Station-channel name as zero-terminated string. 4 byte int The trigger TypeID from the naqs.stn file 8 byte double The trigger-on time, that is, the time at which the trigger criterion was met (seconds since Jan 1, 1970). 4 byte float The duration of the trigger in seconds. 4 byte float The LTA (long-term average) value at the trigger-on time. 4 byte float The LTA (long-term average) value at the trigger-off time. 4 byte float The peak STA (short-term average) value during this trigger. 4 byte float The maximum peak-to-peak signal during this trigger in counts. 4 byte float The time in seconds from trigger-on to the beginning of the maximum peak-to-peak signal. 4 byte float The half period of the maximum peak-to-peak signal in seconds (time between reversals). 4 byte int The trigger phase: 0 message generated at trigger-on 1 early-report message generated typically 1 second after trigger-on 2 complete-report message generated at trigger-off 42 Nanometrics Data Formats Reference Guide 14602R4 2003-11-07
Chapter 3: Private Data Streams 3.3.5.4 Event Packet Event messages contain information on events detected by the Naqs internal Event Associator subsystem. Header: 4 byte int Signature = 0x7ABCDE0F 4 byte int Data type = 6 4 byte int Data length = 28 + N*12 Content: 4 byte int The event phase: 0 event on, sent when the event is first detected 1 event on, sent at the end of the user-defined coincidence window (see the Event Associator section in the naqs.ini file). 2 event off, sent when all channels have stopped triggering, or when the event has expired 4 byte int The type of triggers included in the event. The trigger type is defined by the DetectorType TypeID parameter in the naqs.stn file. 8 byte double The start time of the event, in seconds since January 1, 1970. 8 byte double The event duration, in seconds. 4 byte int N = The number of data channels included in this event. N*12 bytes zero-terminated station-channel name for each of the channels included in the event. 14602R4 Nanometrics Data Formats 2003-11-07 Reference Guide 43
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Page 54 and 55: Chapter 4: Data Access Protocol 4.2
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Page 64 and 65: Chapter 5: Tagged File Format PTR a
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Page 68 and 69: Chapter 6: Y-File Format UCHAR UCHA
Page 70 and 71: Chapter 6: Y-File Format ULONG LONG
Page 72 and 73: Appendix A: Data Stream Client // d
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Page 76 and 77: Appendix A: Data Stream Client Retu
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Page 80 and 81: Appendix A: Data Stream Client rc =
Page 82 and 83: Appendix A: Data Stream Client ----
Page 84 and 85: Appendix A: Data Stream Client } }
Page 86: Appendix B: Serial Packet CRC SendB

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