SW2 VGAcc and SW2 RGBHVcc • Remote Control
Remote Control
SW2 VGAcc and SW2 RBGHVcc
A
Appendix A
Reference Information
Specifications
Switchers
Included Parts
Cables
Accessories
Contact Closure/Tally Out Control
The contact closure/tally out port provides a way to remotely
select an input to the switcher or access feedback.
Contact closure
To select a different input number (Input 1 or Input 2) using a
contact closure device, momentarily short the pin for the desired
input number to logic ground (pin 3). To force one of the inputs
to be always selected, leave the short to logic ground in place.
The short overrides front panel input selections.
The contact closure pin assignments are shown in the table on
page 2-6.
Tally out
Pins 4 and 5 provide feedback to a control system. This
feedback can be accessed from a MediaLink controller or similar
remote system.
Figure 3-1 — Active voltages for pins 4 and 5
4-2
3
4
5
Pin output
voltage
Input 1
selected
Input 2
selected
GND
5V
0V
GND
5V
0V
