Crystal Vision
Installing Statesman
TANDEM-110 User Manual R1.8
28
07/07/2010
The PLL may be switched into either input SDI path (but not both) prior to processing, so
all of the functions of that side, as well as the SDI output, benefit.
When two halves of a TANDEM are cascaded, select the final output side to have the
PLL function, unless there are problems with very high jitter in the SDI input signal, in
which case apply the SDI PLL to the input SDI path. If both TANDEM sides are in use
independently choose the side that offers the best influence on the whole system.
Select from the following options:
On/Off – Off selects free-run, On makes PLL available to either SDI 1 or 2
SDI 1 – PLL locked and inserted I into to SDI 1
SDI 2 – PLL locked and inserted into to SDI 2
Miscellaneous
The miscellaneous menu provides access to GPO 5 and 6 assignment, silence delay and
AES phase. In addition, video and AES input presence is included.
Miscellaneous – GPI Alarms & input status
Using GPI outputs
There are two GPI outputs, GPO5 and GPO6, which may be assigned to twelve different
analogue and/or digital input silence alarms. Audio silence is deemed to refer to embedder
audio signals only, unless that embedder is OFF - in which case de-embedder signals are
tested for silence. If silence is sustained for more than the ‘silence detect delay’ the
assigned GPO will be asserted low as an alarm when ‘flag’ is selected.
Visual indication of GPO 5 and 6 status is also provided.
See section 6.2 for further discussion of GPIs and pinout details.
