Crystal Vision
Installation
TANDEM-200 User Manual R1.7
124
13/02/2008
DIP2RS
This digital audio input module provides 2 AES stereo pairs or four mono channels with
an integral re-sampler for use when the AES input is either asynchronous, or at a sample
rate other than 48 kHz.
The sample rate inputs can work with signals from less than 30 kHz to 108 kHz. It is
particularly useful for asynchronous 48 kHz inputs, and other sample rate inputs such as
44.1 kHz & 96 kHz.
The signal output from the DIP2-RS to the TANDEM is at 48 kHz derived from the video
content of the SDI signal into which it is to be embedded.
Because of the processing of the audio waveform, error words indicated by V bit set high
are ignored. Occasional errors marked by V bit high such as would be the case with a
noisy or too long AES input path, are masked out by the processing.
If the V bit is consistently high, to indicate continuous error states, or to indicate non
audio data, then the processor will give a silent output. All other cards, except RS4, pass
audio data unaltered even when V bit is set or held high.
Link jumpers are provided to select between 110 Ohm (upper 2 pins), HiZ (balanced –
centre pins only) or 75 Ohm (unbalanced – lower 2 pins). Jumper JL3 must be in the
TANDEM position.
Note:
Balanced outputs require the use of rear modules with a ‘D’ type connector and
unbalanced outputs are for use with BNCs.
HiZ is achieved by removing termination jumpers – they can be parked for safe keeping
by replacing them using only one pin.
