Crystal Vision
Statesman
TANDEM 3G User Manual R1.4
49
23/04/2012
Output Group Enable
The four output embedders can be individually enabled or disabled, this allows for any other
data already present on the input video to be retained for down-stream use. If required the
ancillary data can also be removed by enabling the VANC blanking.
Video timing controls
The video delay is a straight forward fixed video delay that can be adjusted in whole-frame
steps. Additionally the minimum delay through the board can be set.
The selections are;
Audio to be 3 milliseconds and Video 4 lines.
Both to be equivalent to the minimum audio delay of 3 milliseconds.
Both audio delay and video delay exactly 1 frame.
Any user selected delays will be in addition to these settings.
AES setup
TANDEM 3G has eight AES I/Os all of which can be configured independently to be either
an input or an output. It is also possible to select globally the format to be either balanced or
unbalanced giving 110R differential and 75R single sided when termination is applied. Hi Z
will have an impedance of approximately 1k.
Note:
The AES format control acts globally on all AES inputs and outputs.
Optical I/O
The TANDEM 3G has the option of either receiving an optical input or transmitting an optical
output once the necessary SPF optical module has been fitted. If the optical receiver module is
fitted the fibre optic I/O input select will allow the video input to be selected between the input
BNC and the optical input. With the optical output fitted the number of outputs will be
reduced from two to one.
Audio input
The audio status and control tab is where the non-routing audio controls are located. In this
menu simulated LEDs are used to indicate audio present on the sixteen audio channels
embedded in the incoming video stream and the up to sixteen (eight stereo) channels available
on the external AES I/O. Further LEDs are used to indicate whether any of the 32 channels are
silent or contain Dolby E. The mono-stereo, invert and resample controls are also found here.
