User guide

SW HDMI Series • Installation 12
Wiring the Tally Out Port to Indicate the Input Selection
To identify the currently selected input when the front panel buttons are not visible, you
can connect an indicator device such as an LED to an input pin and the +V pin of the Tally
Out port. When the input you are using is selected, the corresponding tally out pin shorts
to ground, which activates the connected indicator.
To connect an indicator to the Tally Out port:
1. Plug one of the provided 5-pole
connectors into the Tally Out port. On the
SW6 and SW8 HDMI, plug connectors
into either or both parts of the dual Tally
Out port.
2. Insert the power wire for the contact
indicator device into the +V slot of the
Tally Out connector (pin 5).
3. Insert the ground wire for the indicator into the slot on the Tally Out port that
represents the input that you want to monitor.
Pin 1 = Input 1 tally ground
Pin 2 = Input 2 tally ground
Pin 3 = Input 3 tally ground (SW4, SW6, and SW8 HDMI only)
Pin 4 = Input 4 tally ground (SW4, SW6, and SW8 HDMI only)
Pin 5 = +5 V
Pin 6 = Input 5 tally ground (SW6 and SW8 HDMI only)
Pin 7 = Input 6 tally ground (SW6 and SW8 HDMI only)
Pin 8 = Input 7 tally ground (SW8 HDMI only)
Pin 9 = Input 8 tally ground (SW8 HDMI only)
Pin 10 = +5 V (SW6 and SW8 HDMI only)
Example: One way to use this port is to connect it to a contact closure device with an
LED. Connect the contact device to the Contact port as well. When you use the contact
device to switch the input you are using, the LED lights.
Tx Rx
RS-232 AUTO
REMOTE
1234G
CONTACT
1234 +v
TALLY OUT
Tally Out Port for
Input Selection
Indication