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Broadcast Pix
V8.5
1.5.6 Optional Tally Box Wiring
The tally box option is a stand-alone Measurement Computing USB-ERB24 tally box, with
24 relay contacts for up to 24 camera/sources. It fits into a standard 19” wide rack and
comes standard with racking ears and uses convenient screw terminals that accepts cable
from 12 to 22 AWG. Each contact is rated 6 amps at 240 volts AC. The box uses one of
the computers USB ports, and needs to be plugged into an electrical socket with the
supplied power supply. This tally box does not have GPIOs, if needed, then the 8/8 tally
box from a Slate 100/1000/5008 needs to be used for this purpose and can be used in
conjunction with this tally box.
Installing the Optional Tally Box:
1.
Run a set of wires from each terminal in the Tally Box to each terminal on your
camera/camera unit, one to Program and the other to the Ground, as shown below.
‘NO’ (Normally Open) goes to Program and ‘C” (Common) goes to Ground.
‘NC’ (Normally Closed) is not used.
2.
Plug in the supplied USB B to USB A cable. One end in
any port
of the
workstation, the other in the
USB IN
port of the tally box.
3.
Plug in the supplied power supply into
Power In 9VDC
port of the tally box.
2 LEDs should illuminate:
PWR
should be solid green when the power is plugged
in,
USB
solid green when connected to the workstation and flashing green when
the workstation is communicating to the tally box.
1.5.6
NOTE:
The Tally Box does not supply any voltage for tally. Voltage must be provided by your
Camera Control Units or other source. The Tally Box only opens and closes the tally circuit.
Check your Camera Control Unit’s user manual for more information.
* Camera Control Unit will vary depending on manufacturer.
CAMERA 1
CAMERA 2
CAMERA 3