Grass Valley MRC v.1.2 - Manual (Page 65)

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Miranda Router Configurator
User’s Guide
Configuring and Updating Output Attributes
Switch points can be configured for video outputs. MRC displays only fields that apply to the
type of signals a specific router can switch.
To ensure proper switching of video signals require that the router be connected to a video
reference source.
A switch point is accurate only if the input signals to the router are (vertically) timed to the
applied reference signals. The router calculates an output’s switch point using the reference
signal: line 10 for SD or analog signals at 525i, line 6 for SD or analog signals at 625i, and line 7
for all HD and 3Gig standards.
For example, if an input’s line 1 is displaced 100 lines from the reference, the switch occurs at
line 110 (SD, 525i), 106 (SD, 625i), or 107 (HD or 3Gig). However, because of automatic timing in
downstream devices the need for precise timing of sources at the router inputs is usually
unnecessary.
After you have initially configured a number of switch points, you can update the router’s
configuration at any time. Click the Update Control Card button at the bottom of the page to
do so. Changes are immediately written to the control card and affect the router’s switching
matrix.
How to Configure Output Attributes
1 Go to the ‘Output Attributes’ page. From the Video Routers table at the bottom of the page,
select a control card.
The attributes table controls the type of switch point, but not the actual moment in time of the
switch, relative to the reference signal. Diagnostic equipment or specialized software is required
for that.
2 If your router’s audio signals are locked to an external AES reference, check the ‘Require
External AES Reference’ check box.
3 In the ‘Dual Video Reference Option’ region, select Redundant or Dual:
Redundant — Both VIDEO REF 1 and VIDEO REF 2 ports on the router are used and identical.
If one fails, the other is used as a fail-over. Choose a video rate that applies to both.
Or
Dual — The reference signals can be different. Choose a video rate for each reference port.
(The choices for video rates are 1080i, 720p, or 1080p. See External References and Switch
Point Configurations on page 146.)
4 (Optional) Use the Output Range filter to limit the outputs that display:
Enter a start and end output number in the fields provided and click Read Outputs. Only the
outputs in the range you entered are displayed.
Or
Click Read All to have the page display all outputs.
Note
Every control card in a router must be configured separately, but identically.