Grass Valley Concerto Routing Matrix v.1.8.1 - Manual (Page 90)

90 Concerto — Installation and Service Manual
Section 2 — Installation
Expansion Audio System Cabling
Two Concerto frames can be cabled to create Audio matrices of 160x160,
192x192, 224x224, or 256x256. For more information on supported frame
configurations see
TDM Expansion on page 57 .
A Time Division Multiplex (TDM) sub-module is attached to one of the
Audio modules in each frame.
If you ordered your Audio modules with the TDM sub-modules already
installed, they will be attached to the bottom side of the Audio modules.
Identify which of your Audio modules have TDM sub-modules and which
don’t. The cabling of the backplanes and the location of the TDM sub-
modules must be in sync to work properly.
If you ordered the TDM sub-module as an option to add to your existing
Audio module see
Expansion TDM sub-module Installation on page 106 for
installation instructions.
The base frame must have four Audio modules and the expansion frame
must have at least one Audio module. An Audio module with an attached
TDM sub-module should be inserted in the expansion frame in or as close
to slot 1 as possible. If the expansion frame has Video modules they will fill
slot 1, then slot 2, etc. If the expansion frame does not have any Video
modules then an Audio module can go into slot 1.
The Audio module in the expansion frame that is in or closest to slot 1 will
determine where the Audio module with the attached TDM will go in the
base frame. If the TDM is in slot 1 on the expansion frame it needs to be in
slot 1 on the base frame.