pro bel Freeway Manual page 69

Pro-Bel Ltd Technical manual
When all overrides are released the original source that was routed before any
overrides were activated is restored. Override Inputs are activated by shorting the
override input pin to
av
signal.
Each override input can have any source assigned to it and can be assigned to
operate on any level.
If more than one override input is active on a panel, then the lowest number
override will take priority.
When a destination is overridden no other crosspoint can be set on that
destination by any means unless it is a higher priority override.
The maximum number of overrides available to any panel is 16.
Keyswitch input
All panel types have the software ability to accept a keyswitch input to inhibit the
<TAKE> and source buttons. Presently, only 6276 and 6277 panels have the
hardware to support this feature. The default condition is <TAKE> button enabled
(keyswitch on). If the keyswitch is disabled then the source PRESET display
indicates LOCKED .
To disable the <TAKE> button and source keypad pin 1 of the AUX input on the
rear of the panel needs to be connected to
av.
Making selections
'Crosspoint' selections (or routes) are made provided :
• the destination and source are valid for the level
• the destination is controllable
• the level is active and controllable
• the route is not inhibited
• destination is not protected
• an override is not active on this destination unless the source is a higher
priority override
• the router is recognised as present by the Freeway control card .
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