GRASS VALLEY GV MATRIX, User Manual

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72
Configuring Your GV Matrix
Input Timing - SDI
2 Click on the Output on Error Mode pulldown.
3 Click to select the desired output from the XIO-4901 to the IFM-2T when the SDI input
is in error.
Output Details
Blank Use the selections made on the 9 individual Input tabs.
Color bar Feed a standard color bar signal to the fabric module.
RGB value Feed a full-frame color patch to the fabric module.
4 You must select the color patch individually for each of the nine outputs, as per To
choose the color for the RGB value , on page 71. You can use the color patches here
instead of returning to the individual tabs - they are interconnected.
Input Timing - SDI
Input Timing to Reference
To see the timing relationship between an input and the GV Matrix’s URS signal
1 Click Input Config and select the SDI IN tab for that input.
2 Select the Video tab and view the Timing to Reference data window.
Asynchronous Input Signals
The input detection circuitry in XIO-4901 must be advised when the input signal is
asynchronous to the system timing as defined by the GV Matrix’s URS signal generated in
the CPU-ETH3 controller. This is because an asynchronous signal will occasionally be nearly
in phase with the reference, causing the the detection circuitry to lock it, only to have the
signal drift away from the reference, unlocking the input circuits. The lock/unlock cycle will
raise error messages, and interfere with system operation.
Defining this input as asynchronous allows the system to ignore the occasional in-phase
situation. The signal can pass through the system, but of course clean switching will be
compromised. See
Asynchronous Video on page 87 for an overview of how GV Matrix
handles asynchronous video.