Meinberg TCR170PEX Manuel d'utilisateur télécharger pdf (Page 19)

Time capture inputs

Two time capture inputs (CAP0 and CAP1) are provided at a contact strip of

TCR170PEX to measure asynchronous time events. A falling TTL slope at one of

these inputs lets the microprocessor save the current real time in its capture buffer.

From the buffer, capture events are transmitted via the PCI-bus or the serial interface

COM0. The capture buffer can hold more than 500 events, so either a burst of events

with intervals down to less than 1.5 msec can be recorded or a continuous stream of

events at a lower rate depending on the transmission speed of COM1 can be measu-

red. The format of the output string is ASCII, see the technical specifications at the

end of this document for details. If the capture buffer is full a message „** capture

buffer full“ is transmitted, if the interval between two captures is too short the

warning „** capture overrun“ is being sent.

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Meinberg TCR170PEX Manuel d'utilisateur Page 19