Crystal Vision
Statesman operation in mode 4
TANDEM-200 User Manual R1.7
57
13/02/2008
Audio routing
The first task to perform when routing audio for the first time is to choose which audio
groups will be involved in de-embedding and embedding. The next task is to decide if any
available external audio sources will be used and if there will be any external audio
destinations. Available external sources and destinations are provided by ‘G’ and ‘J’
option cards.
TANDEM-200 in mode 4
Mode 4 is designed to allow embedded audio to be replaced from an external source. Both
SDI circuits share half of one input module and half of one output module.
Mode 4 is be referred to as ‘audio break-out and embed’. Background audio of a sports
event can be monitored on two channels (de-embed) and commentary added on the other
two channels (embed). This operation can be performed for two embedded SDI inputs.
Tip:
If TANDEM-200 firmware or sub-boards have been changed it is recommended to start
by loading valid default settings for the entire routing table held in TANDEM’s non-
volatile memory. This will prevent erroneous settings from appearing in the routing
assignment menus. From firmware V5.15 this function is performed automatically (card-
edge display shows Save Pre15 > Pre1). Please refer to Using card edge controls section
9.3 if default settings are required. Audio group selection should be checked after
loading default routing.
A side 1 input option card must be issue ‘B’ and a side 2 output card must be ssue ‘B’.
The card-edge BFormat test detailed in section 9.14 will test for board issue type.
