Grass Valley NV8500 Series v.3.5 - Manual (Page 88)

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Crosspoints
Redundant Crosspoint Functions
The same holds true for the card in slot 3.
You can place the redundant card in standby mode by pressing its ‘Standby’ button. You must
press the ‘Standby’ button before you can substitute the redundant card for another crosspoint
card.
 The normal crosspoint card’s button has no function in an NV8140 and the label of the
button has no meaning in the NV8140.
Manual NV8144 Switchover
The NV8144 has 2 crosspoint card slots. As viewed from the front of the router, slot 1 is on the
left and slot 2 is on the right:
The same crosspoint card is used in each slot. One of the cards is active and the other is standby.
If the card in slot 1 fails or you want to remove it from the frame, press the button on the other
crosspoint card. Immediately, the other card takes over for the card in slot 1. If the card in slot 1 is
still powered up, its ‘Active’ LED turns off and its button turns dim. The second card’s active LED
turns on and its button turns bright.
The same holds true for the card in slot 2.
Card 1 active;
card 2 stand-by Card 1 stand-by;
card 2 active