Manual

2
CM-CU1 Commentator Unit User Handbook
INTRODUCTION
1
INTRODUCTION
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.
Fig 1-2: CM-CU1 Commentator Unit Block Diagram