Crystal Vision
Introduction
1 Introduction
The TANDEM HD-21 is a High Definition video 24 bit two group audio analogue or digital
embedder/de-embedder. It can be configured with two sub-PCB option cards to provide any of
a number of possible functions at once, such as:
•
De-embed, audio process, re-embed
•
Embed digital or analogue audio into two groups
•
De-embed and output digital or analogue audio from two groups
•
Embed digital or analogue audio in one group whilst you de-embed and output
digital or analogue audio from a second group
In addition to embedding and de-embedding two audio groups, TANDEM HD-21 incorporates
a number of powerful features. For example, a built-in audio delay is provided to compensate
for video processing, analogue monitoring can be used to preview sources and audio quality is
ensured with forward error correction. TANDEM HD-21 also has a switchable one frame
video delay useful for matching Dolby E audio delays.
Control is available from the card edge, active control panels or by serial control from
Statesman, a dedicated software application.
The main features are as follows:
•
HD/SD capable
•
De-embeds and re-embeds two audio groups
•
Extensive Dolby E handling
•
Built-in multi-channel digital audio delay
•
Independent audio gain controls
•
HANC blanking option
•
Audio source preview monitoring
•
EDH insertion
•
Audio replacement
•
Channel swapping/shuffling
•
Stereo to mono conversion
•
One frame video delay for handling Dolby E
•
Control and status monitoring via board edge, frame/remote control panel
or Statesman
•
Analogue and AES audio input/output sub-PCBs
•
Audio forward error correction protection in de-embedders – handles untimed
or asynchronous SDI with minimum corruption
•
GPI control of configuration set-ups
TANDEM HD-21 has a single video signal path with two de-embedders and two embedders,
which allow the extraction and insertion of up to two groups (eight channels) of audio.
Additional sub-PCBs further increase the number of audio channels available for selection to
re-embed to 16. Analogue, AES and Dolby E audio formats can be handled simultaneously,
TANDEM HD-21 User Manual R1.6
3
12/11/2012
