Grass Valley Maestro Master Control Installation v.2.4.0 - Manual (Page 119)

MAESTRO — Installation and Service Manual 119
Tally
Tally
The GPIO connector on the Maestro rear panel can be configured to
provide an indication as to which Maestro input has been selected for the
Program (Air) output. The GPIO connector can be connected, directly or
indirectly, to a tally light associated with the input.
Tally hardware connections are described on page 70 .
Software configuration for Source Tally is described on page 210 .
Software configuration for Bus Tally is described on page 212 .
Space and Ventilation Requirements
See Appendix A-Specifications.
Specifications
See Appendix A-Specifications.