JVC DLA-DS1U - General Purpose D-ila Projector Manual page 12

9.3 Internal Error Data Reply Timing
When returning data, the Projector checks for internal error data. If such data exists, the internal
error data is returned before the tally (response) data is transmitted. That is, if an internal error
occurs, the Projector retains the internal error data, returning it in order of precedence a request
for tally (response) data is received. Once transmitted, internal error data is deleted from the
Projector.
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