4Links Multi-link SpaceWire Recorder Version 4, User Manual

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7.3. Option EW - Event / Error Waveforms
When option EW is provided, each SpaceWire port contains a waveform recorder that captures the wire signals at
that port continuously. It stops recording and makes the waveforms available after it is triggered by an event.
EtherSpaceLink family units with the EW option can be set to trigger the capture of a waveform when an error is
detected, and the MSR considerably extends the triggering opportunities.
Each port can generate an event when one or more of the following have been enabled and subsequently occur:

The first byte of a packet is received;

The error-end-of-packet marker, EEP, is received;

Time codes are received;

ECSS errors, ESC-ESC, ESC-EOP, ESC-EEP, Timeout, Parity error, are received.
Some of these triggering capabilities must be specifically enabled using the Event Reporting option (section 7.2,
“Option ER - Event / Error Reporting”).