Crystal Vision
Introduction
TANDEM HD-20 User Manual R1.4
3
24/05/2007
1 Introduction
The TANDEM HD-20 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 de-embedding and
outputting digital or analogue audio from a second group
In addition to embedding and de-embedding two audio groups, TANDEM HD-20 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.
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
•
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
•
Control and status monitoring via board edge or 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-20 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,
although care must be taken not to disrupt the integrity of any Dolby E data by inappropriate
routing or gain manipulation.
