Remote Control
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
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.
Pin output | Input 1 | Input 2 |
voltage | selected | selected |
|
|
|
3 | GND | GND |
4 | 5V | 0V |
5 | 0V | 5V |
|
|
|
Figure 3-1 — Active voltages for pins 4 and 5
SW2 VGAcc and SW2 RBGHVcc
AAppendix A
Reference Information
Specifications
Switchers
Included Parts
Cables
Accessories