Crystal Vision
Specification
TANDEM-200 User Manual R1.7
138
13/02/2008
12 Specification
TANDEM-200 motherboard
Inputs
Video
2 channel Serial Digital Component (SDI) 270Mbit to EBU 3267-E &
SMPTE
Cable equalisation
>200m Beldon 8281 or equivalent (video)
Audio inputs
Dependent on sub-modules fitted
SDI embedded to SMPTE272M-AD
External reference
Digital output sub-modules may have an external AES/EBU reference
See section on sub-modules for more information
Outputs
Video
2 channel Serial Digital Component (SDI) 270Mbit to EBU 3267-E &
SMPTE 259M (Audio is embedded to SMPTE or SONY format) - Two
buffered outputs are available for each TANDEM-200 channel with
suitable rear connectors
Audio
Dependent on sub-modules fitted
SDI embedded to SMPTE272M-A
Monitoring
1 x miniature front mounted audio jack and switch selects individual
stereo audio analogue monitoring on both embedder and de-embedder
Also available on rear connector
AES/EBU monitoring also available on rear connector
Crystal oscillator
For continuous AES/EBU output at all times
Embed/de-embed timing
Inter-channel variation: less than 1 clock cycle
AES/EBU digital audio time delay format dependent – Side1 to Side 2
delay round-trip varies from 310µs to 835µs
Analogue audio time delay format dependent – Side1 to Side2 round trip
delay varies from 1,540µs to 2,075µs
SDI video delay 400 clock cycles at 270MHz or 1.141µs
Round trip audio delay measured by taking de-embedded audio output
from one side, and re-embedding into other side.
Minimum times with SDI PLL set to OFF (actual times may vary with
Mode & other selections). Selecting SDI PLL ON will add a variable
amount of delay of between 0.6 and 8.9 microseconds, dependant on the
severity of jitter and wander of the incoming SDI 270 Mb/s clock rate.
De-embedding format
Automatic selection of SMPTE or SONY formats or manual selection
Embedding formats
Operator selection of enhanced SMPTE or SONY formats
Standard selection
525/625 automatic
EDH
EDH insertion on embedder
