End of message tests – Quantum Data 881 User Manual

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881/882 Video Test Generator User Guide (Rev A.22)

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6. Monitor the effects of the acknowledge test using the ACA. Refer to

To monitor the

CEC bus (channel):

” on page 492 for instructions on monitoring the commands through

the ACA.

End of message tests

You can simulate a condition where an end of message bit is placed improperly. The end
of message bit should be placed in the last block of the message. However you can place
the end of message bit in a block that is not the end of message and therefore cause an
incomplete message to be sent since the target device is suppose to ignore additional
blocks once the end of message bit is processed.

To simulate end of message anomolies:

1. Enter the following command to simulate an end of message anomoly.

CEC1:CECT:EOMS 2

//indicates that the end of message bit will be

placed in the second block of the message.

CEC1:CECT:EOMS 1

//indicates that the end of message bit will be

placed in the first (header) block of the
message.

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