Crystal Vision
Using the front control panel
SW221 3G User Manual R1.4
20
01/09/2016
Switch back
Once a switch has taken place automatic switch back will be controlled by the switch back
control. Immediate mode will allow the switch to return once the error has disappeared for a
minimum of one frame. In certain circumstances this could result in the output flip-flopping
between the two inputs erratically. To avoid this, the switching action can be either delayed or
latched.
GPI configuration
The GPI inputs can be used to control input selection/routing are configurable for either edge
or level trigged. They can also be used to give a tally of the selection/routing. When GPI
control is selected to ‘level’ GPI = High (floating) selects Input 1 and GPI = Low (pulled to
ground) selects Input 2.
Output A and output B both have individual GPI controls/tally’s and can be selected to
perform the following functions.
Output A
Output B
No GPI control. Tally on ‘b’
No GPI control. Tally on ‘d’
Level on ‘a’. Tally on ‘b’
Level on ‘c’. Tally on ‘d’
Edge on ‘a’. Tally on ‘b’
Edge on ‘c’. Tally on ‘d’
Edge on ‘a’ and ‘b’. Tally on ‘a’ and ‘b’
Edge on ‘c’ and ‘d’. Tally on ‘c’ and ‘d’
Edge on ‘a’ and ‘b’. No tally
Edge on ‘c’ and ‘d’. No tally
Factory Defaults
Factory defaults will return all parameters to their factory values.
Parameter
Default value
Auto switch Output A
No
Auto switch Output B
No
Routing Output A
Input 1
Routing Output B
Input 1
Output switch timing
Field
Switch mode
Immediately
Valid signal format
All
Switch back delay
2.0
GPI control Output A
No GPI control. Tally on “b”
GPI control Output B
No GPI control. Tally on “d”