Ross CMA-8011A, User Manual

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Overview
The CMA-8011A Component Monitoring Amplifier provides a convenient and cost effective dual-
purpose solution for signal distribution and picture monitoring requirements in serial digital
component (4:2:2) systems. The complete unit occupies only a single card slot in a standard RossGear
8000 series digital products rack frame. Ten modules may be mounted in the 2RU frame, with four
modules in a 1RU frame.
The CMA-8011A addresses high quality imaging requirements by converting the 8 MsB's of an SDI
signal to analog composite video. It uses a 10-bit DAC with a 10MHz bandwidth, thereby achieving
low artifact video output.
The CMA-8011A provides four composite analog monitoring outputs and can work in either NTSC or
PAL environments. In addition to converting the digital signal, the CMA-8011A also outputs four
reclocked SDI streams. The SDI input has an exceptionally good cable equalizer that will give error-
free performance with up to 305 meters (1000 ft.) of Belden 8281 cable.
Several user-selectable settings are available to place the CMA-8011A into the proper operating mode.
Some of these modes are; setting the monitoring outputs to monochrome, output a 75% color bar
pattern and blanking the vertical interval.
Of special interest on the CMA-8011A is the inclusion of an adjustable analog cable equalizer for the
analog output signal. This adjustment can be set to equalize up to 90 meters (300 ft.) of Belden 8281
cable, thus ensuring that the monitoring signal is delivered to the destination without chroma loss.
The CMA-8011A has card-edge LED indicators to confirm adequate serial digital input signal
strength and to indicate monitoring errors.
Functional Block Diagram
Figure 1. Simplified Block Diagram of CMA-8011A Functions
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Introduction CMA-8011A User Manual (Iss.05)