Sirius 800 Series User Manual
Video Reference Inputs
Product Overview 3.11
Iss 5 Rev 7
Page 45
© 2017 SAM
3.11.3 Reference Offset (Nucleus2 Controllers Only)
In some circumstances it is necessary to set an offset on a reference signal to accommodate
system timing and to make sure the video signal switches at the correct point. see section
3.11.5 and section 3.11.6 for examples of when this may be required. Reference offsets can
be set from Door screen (see section 5.3.3) or from Workbench (see section 3.11.1).
3.11.4 RefAuto Selected
RefAuto is set for all signals when the default database is being used.
When RefAuto is selected for a signal the Nucleus controller will look for a derived reference
(2464 or 2463) or a physical reference (2450) that exactly matches the signal.
•
If a matching reference signal (physical or derived) is present the controller will switch
in accordance with SMPTE RP168.
•
If a matching reference signal (physical or derived) is not present the router will crash
switch.
RefInput1
to
RefInput4
Overrides the Auto detection by using one of the fixed reference inputs
which allows the same standard but offset for timing issues to be
resolved (see section 3.11.3).
There can be a mix of the physical reference inputs and the derived
reference inputs depending on which Nucleus controller type is fitted and
how it is configured (see the following notes).
Notes:
•
If Nucleus 2450 controllers are fitted only the physical reference
inputs are available.
•
If Nucleus2 router controllers are fitted then a mix of physical and
derived reference inputs are available for use depending on
router configuration. see section 3.11.1 for details on derived
references.
SDIInput1 and
SDIInput2
Not Available
Video Reference
Video Signal
Table 5
Switching Point Video References
Note:
•
Derived references are only available when Nucleus2 controllers are fitted.
see section 3.11.1 for details.
•
If RefAuto is selected for a Dual Link 1080p input signal the Nucleus controller will
look for a 1080i reference with the same frame rate as the input signal.
