Crystal Vision
Specification
TANDEM HD-20 User Manual R1.4
51
24/05/2007
EDH
EDH insertion on SD output
Video/Audio Delay
Dual channel digital audio delay - OFF or pre-settable in 1ms steps from 1
- 64ms.
Delay through board
Less than one line
Audio processing
Audio
SD embedded to SMPTE 272M
HD embedded to SMPTE 299M
Analogue or AES dependent on sub-modules fitted
Audio gain
Gain level adjustment on each channel b3dB and -3dB in 0.1dB
steps. 0dB calibration.
Monitoring
1 x miniature front mounted audio jack and switch selects individual stereo
audio analogue monitoring on both embedder and de-embedder
Audio Replace
Routing of input sub-PCB audio together with audio or Dolby E from up
to two de-embedded groups present on video input to any channel of up to
two output embedder groups
Silence detect delay
Silence detect delay for both sides is adjustable for the time a signal is
allowed to remain below -50dB with respect to Full Scale before a silence
error is flagged. Variable steps from 4 seconds plus 0-128 seconds
Dolby E
Dolby E signals can be processed and routed without corruption
Audio protection
Full support for data recovery using SMPTE 299M error correction codes
Set ups
Sixteen set-ups are available to store setup data. They may be recalled
either from the board control or through the use of external GPIs
GPIs
Four GPIs are available for external recall of setups and two are available
to provide alarm monitoring
Status monitoring
Front card edge visual monitoring with alphanumeric and LED indicators.
Remote control panel and Statesman PC control also available
Maskable GPI output of inputs present and silence
HD-AIP2: Dual analogue audio input sub-module
Audio input
2 analogue stereo pairs or 4 mono channels, 24 bit quantising A to Ds,
High input impedance (20K Ohm) balanced
Level range
0dBFS = +28dBu max / 0dBFS = +12dBu max
Default level: 0dBFS = +18dBu or +24dBu by on-board link
Signal to noise
-99dBu / -117 dBFS (+18dBu) rms., 22Hz to 22kHz typ.
Total harmonic distortion
0.004% THD+N rms. 22Hz to 22kHz typ.
Interchannel crosstalk
-110 dB @ 1kHz, -90 dB @ 20 kHz, rms. typ.