Crystal Vision Operation
8
GPIs When open (+5V) When grounded
‘a’ Control - Route Input 2 to Output A Control - Route Input 1 to Output A
‘b’ Status - Input 1 routed to Output A Status - Input 2 routed to Output A
‘c’ Control - Route Input 2 to Output B Control - Route Input 1 to Output B
‘d’ Status - Input 1 routed to Output B Status - Input 2 routed to Output B
‘e’ Status - Input 1 absent. Status - Input 1 present.
‘f’ Status - Input 2 absent. Status - Input 2 present.
GPI assignments for current mode
1 2 3
Each channel selected by two remote momentary switches
Lever Function Up Down
4A OUT Input 1 Input 2
5B OUT Input 1 Input 2
7IMMEDIATE Switches in next frame blanking Switches in next frame blanking
8STATUS Dual control/status on GPI lines ‘a’ to ‘d’ Control only on GPI lines ‘a’ to ‘d’
Use levers 4,5,7 and 8 to set switching options
Piano switches 4 & 5 as shown above determine power-up routing. Subsequently, each
input will be selected (during frame blanking) each time the corresponding momentary
switch is closed and released. With piano switch 8 down, indicator outputs are disabled to
allow the remote controls of a number of SW222s to be connected in parallel.
GPIs When open (+5V) When grounded
‘a’ Status - Input 2 routed to Output A. Status - Input 1 routed to Output A. Control (momentary
action) – Route Input 1 to Output A.
‘b’ Status - Input 1 routed to Output A. Status - Input 2 routed to Output A. Control (momentary
action) – Route Input 2 to Output A.
‘c’ Status - Input 2 routed to Output B. Status - Input 1 routed to Output B. Control (momentary
action) – Route Input 1 to Output B.
‘d’ Status - Input 1 routed to Output B. Status - Input 2 routed to Output B. Control (momentary
action) – Route Input 2 to Output B.
‘e’ Status - Input 1 absent. Status - Input 1 present.
‘f’ Status - Input 2 absent. Status - Input 2 present.
GPI assignments – Status enabled (piano switch 8 up)
