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CM-CU1 - Introduction 1
1 CM-CU1 Commentator Unit
Introduction
Fig 1-1: CM-CU1 Commentator Unit
The CM-CU1 Commentator Unit is a high quality, portable broadcast mixer
and 4-wire talkback unit. Its sturdy construction and flexibility of features
make it suitable for use in a wide variety of environments.
It provides a fully featured commentator position with both limited,
transformer balanced, and non-limited, electronically balanced outputs.
A limit indicator on the main panel shows when the adjustable limiter on
the mix output is active, and a bright 21 segment LED PPM meter, which
can be disabled, shows the main output level.
The line input can be configured to remain present at the
mix output even if the commentator is off air, making it
useful for routing crowd effects or pre-recorded material
to the programme feed. Its presence in the commentator’s
headphones is also configurable to suit the application.
Four talkback output channels, with a built in limiter, are
available to the commentator. They have adjustable gain
and can be linked to provide simultaneous operation.
A wide input gain range and switchable phantom power provides
support for a variety of microphone types, from high output
phantom units to low output ribbon microphones.
There are 5 transformer balanced return audio inputs which, along with
the commentator input, are routed to the headphone monitor controls.
With these headphone controls, any input can be level adjusted, and sent
to either the left, right or both ears.
A GPIO port gives an open-collector driven output indication of any active
on air or talkback channels, and four remote inputs provide an external
call/alert to each of the talkback controls.
The Commentator Unit has a built in line-up tone generator for easy
channel identification and cabling checks, and a flexible range of options
allow the unit to be customised to better suit the operational and users’
personal requirements.
