Miranda imagestore 750, Руководство пользователя

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Front Panel Operations Imagestore 750 User Manual
Page 170 Miranda Technologies Inc.
Set Standard
Use this option to select the appropriate video standard. After selecting the
new standard a message will appear on the front panel to show that the
system needs to be restarted for the new setting to be applied.
Restart the Imagestore 750 by selecting ‘Software Reset’ or ‘Restart System’.
Note: Changing the standard will probably invalidate the current
reference offset. It is therefore recommended that the active
configuration be exported before changing standards so that the
current state can be restored when required. Please see page 125
for details.
Note: Unload all images before changing between video standards
especially changing between interlaced and progressive
standards.
Set Reference
For SD standards connect the facility’s ‘black and burst’ analogue reference
to “Ref in”. For HD standards connect the facility’s analogue reference,
which may be either a ‘black and burst’ analogue reference or a tri-level sync
reference, to “Ref in”. Whichever reference is used, ensure that the
Imagestore 750 is set to the same frame rate.
The displayed reference value shows the timing of the outputs with respect to
analogue reference.
Note: If the external analogue reference is absent, the unit will lock to
the SDI A Input. This is not recommended as the A input is
often switched by a router. Additionally, this results in higher
output jitter for SD standards.