Grass Valley Maestro Master Control Installation v.2.4.0 - Manual (Page 72)

72 MAESTRO Installation and Service Manual
Section 2 — Installation Planning
Figure 23. Example of Wiring for Single Port Connection between Maestro and Tally Light
For pinouts of the GPIO connector, see Table 9 on page 95 . For a diagram of
the GPIO port circuitry, see page 96 .
Bus Tally Mode (Jupiter Systems with MI-3040)
The GPIO connector on the Maestro rear panel can be configured to
provide an indication as to which Maestro input bus has been selected for
the Program (Air) output. The GPIO connector can be connected to a
Jupiter Control System MI-3040 General Purpose/Tally Interface. The
Jupiter Control System can be configured to determine which router input
(source) is currently switched to the Maestro input bus that is on Air;
Jupiter can then activate the appropriate MI-3040 relay connector in order
to illuminate a tally light. See
Figure 24 and Figure 25 .
Maestro
GPIO Connector
pins for Port 1
See Notes
Note 1
Connections between Maestro GPIO Connector
and current source connectors are bipolar;
e.g., GPIO "A" can be connected to either plus
or minus source.
Note 2
Maximum current through Maestro GPIO relay = 250 mA.
Maximum voltage = 24 V.
A
B
Current
source
Tally light