Crystal Vision
Introduction
TANDEM-200 User Manual R1.7
7
13/02/2008
TANDEM-200 functionality is determined by the piggyback option cards fitted and
which of four operational modes has been selected.
The four modes are:
•
Mode 1 – Independent - two independent SDI paths, each of which contain, in
addition to HANC processing, a de-embedder, an embedder, or a de-embedder
and an embedder
•
Mode 2 – Two audio groups for a single SDI path – Dual de-edual
embedder with 2 audio groups (8 mono channels), ideal for multi-track
distribution
•
Mode 3 – Audio Bridge – Transfer audio from SDI 1 to SDI 2 with optional
delay of up to 681 milliseconds - dual de-eembedder handles 8 mono
channels in two groups – use with optional RS4 for asynchronous signals
•
Mode 4 – Audio break-out and embed – Dual stereo de-embedders followed by
dual stereo replace embedders
TANDEM-200 architecture - internal pathways are entirely re- arranged each time a different mode is selected
In practice mode changes effectively re-program the module logic to create the exact
functions and interconnections for each mode. The above diagram is for illustration
purposes only. Operational modes are more fully discussed in this Introduction in section
1.3 and in the Statesman chapters 4, 5 6 and 7. HANC processing is discussed in section
2.1.
The external digital reference is either Word Clock or an AES reference and is only used
for digital output option cards.
