Manual

CM-CU1 Commentator Unit User Handbook
3
MAIN CONTROLS & INDICATORS
MAIN CONTROLS & INDICATORS
2
2 Main Panel Controls & Indicators
Fig 2-1: Top Panel View Of CM-CU1
The main panel of the Commentator Unit is split into two areas. At the top are the mix
output PPM meter display, mix output limiter active indicator and the power indicator LED.
Below this are the main commentator position controls, with the TALKBACK and ON AIR
buttons located towards the bottom.
ON AIR Button
The ON AIR button routes the commentator microphone input signal to the Comm Output
and to the Mix Output. This button has a latching action; press to activate and press
again to deactivate. When the On Air control is active, the button illuminates red and the
corresponding open collector driver output on the GPIO port is activated.
The line input signal is permanently routed to the mix output by default. It is possible to
configure the line input signal to be routed only when the ON AIR button is active. See
Page 10 ‘Config Page 2 - Line Input Routing to Output’ for details.
TALKBACK Buttons
The TALKBACK A, B, C and D buttons allow the commentator’s microphone signal to be
redirected to the corresponding Talkback Output. The commentator output is muted and
the commentator’s signal is removed from the Mix Output. The five return audio inputs