ATEM Switchers Manual - Holdan.eu
ATEM Switchers Manual - Holdan.eu
ATEM Switchers Manual - Holdan.eu
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102<br />
Using Tally<br />
GPI and Tally Interface<br />
Sending Tally Signals via a GPI and Tally Interface<br />
Your <strong>ATEM</strong> switcher can send tally signals to monitors and cameras to make it clear which source is on the<br />
program output, i.e. which source is on air.<br />
Tally is commonly used to light the red light on top of a camera or monitor so the talent knows they are on<br />
air. Tally can also illuminate a border on a monitor such as a Blackmagic SmartView Duo or SmartView HD.<br />
The border allows production staff to know which camera is on air.<br />
The GPI and Tally Interface by Blackmagic Design, is an Ethernet device which provides eight mechanical<br />
relay contact closures to ground that can be used for tally. Tally signals are sent from the Ethernet port<br />
of your <strong>ATEM</strong> switcher to a GPI and Tally Interface on the same network as the switcher. By following<br />
the wiring guide on the back of the GPI and Tally Interface, a breakout cable can be connected to video<br />
equipment that supports contact closure tally signals, such as Blackmagic SmartView Duo and SmartView<br />
HD. Up to 8 tally receiving devices can be supported with a single GPI and Tally Interface. Only one GPI and<br />
Tally Interface unit is needed when used with an <strong>ATEM</strong> 1 M/E Production Switcher or an <strong>ATEM</strong> Television<br />
Studio. Two units of GPI and Tally Interface are needed when used with the 16 inputs of <strong>ATEM</strong> 2 M/E<br />
Production Switcher.<br />
The GPI inputs are optical isolators which are triggered by connection to ground with a maximum of 5V<br />
at 14mA.<br />
The tally outputs are mechanical relay contact closures to ground with a maximum of 30V at 1A.<br />
The following table illustrates which tally signal is sent when a switcher input is selected on the program<br />
output. When using GPI and Tally Interface with an <strong>ATEM</strong> 2 M/E Production Switcher, use <strong>ATEM</strong> Setup<br />
Utility to set one unit to signal on tally outputs 1 - 8 and the second unit to signal on tally outputs 9 - 16.<br />
Program Output Tally signal<br />
Switcher Input 1 Tally 1<br />
Switcher Input 2 Tally 2<br />
Switcher Input 3 Tally 3<br />
Switcher Input 4 Tally 4<br />
Switcher Input 5 Tally 5<br />
Switcher Input 6 Tally 6<br />
Switcher Input 7 Tally 7<br />
Switcher Input 8 Tally 8<br />
Program Output Tally signal<br />
Switcher Input 9 Tally 9<br />
Switcher Input 10 Tally 10<br />
Switcher Input 11 Tally 11<br />
Switcher Input 12 Tally 12<br />
Switcher Input 13 Tally 13<br />
Switcher Input 14 Tally 14<br />
Switcher Input 15 Tally 15<br />
Switcher Input 16 Tally 16