Nanometrics Data Formats Reference Guide

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Chapter 3: Private Data Streams 4 byte int message type =134 4 byte int message content length = 4 + 4 * N, where N = number of channels Content: 4 byte int number of channels to remove = N (use 0 to remove all channels) N * 4 byte int Channel key for each requested channel (same as in Channel List message) 3.3.3.4 RemoveTriggerChannels The RemoveTriggerChannels message is used to remove trigger channels from the client’s subscription. Currently, Stream Manager maintains an all-or-nothing policy toward trigger subscriptions. A remove-all RemoveTriggerChannels message (number of channels = 0) will cause Stream Manager to delete all trigger channels from the subscription. Any RemoveTriggerChannels message with a non-empty list of channel keys will provoke an Error message from Stream Manager. Header: 4 byte int Signature = 0x7ABCDE0F 4 byte int message type =132 4 byte int message content length = 4 + 4 * N, where N = number of channels Content: 4 byte int number of channels to remove = N (use 0 to remove all channels) N * 4 byte int Channel key for each requested channel (same as in Channel List message) 3.3.3.5 RemoveEvents The RemoveEvents message is used to unsubscribe from the event packet stream. Header: 4 byte int Signature = 0x7ABCDE0F 4 byte int message type =133 4 byte int 0 3.3.4 Server messages These are subscription protocol messages sent by Stream Manager to the client. 3.3.4.1 Channel List A Channel List message contains a list of the data streams available. Each stream is identified by an unique integer key (which encodes digitizer/channel information) and an 11-character ASCII string which encodes the station and channel name. The channel list contains time-series, serial and state-of-health channels. The data type for a given channel can be determined from the channel key using the following formula: type = ((key >> 8) & 0xff). Header: 4 byte int Signature = 0x7ABCDE0F 40 Nanometrics Data Formats Reference Guide 14602R4 2003-11-07
Chapter 3: Private Data Streams 4 byte int message type = 150 4 byte int message content length = 4 + N * 16 Content: 4 byte int number of channels available = N N 16-byte channel info bundles of the form: { 4 byte int Channel key = ( (ID
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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
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Page 86: Appendix B: Serial Packet CRC SendB

Nanometrics Data Formats Reference Guide

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