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DiGiCo SD Rack 192 kHz, Multi-Mode HMA

The Next Generation of DiGiCo I/O -optocore connectivity
DiGiCo SD Rack 192 kHz, Multi-Mode HMA
DiGiCo SD Rack 192 kHz, Multi-Mode HMA DiGiCo SD Rack 192 kHz, Multi-Mode HMA


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To get the most from the best in mixing console technology, you need the finest I/O rack available. So meet the DiGiCo SD Rack, delivering up to 192 kHz high resolution analog I/O converters and multiple digital formats including: MADI, AES, ADAT and Aviom.

Based on nine years of digital touring experience with the D and SD Series consoles, DiGiCo have completely redesigned the SD7’s new rack to provide a wealth of improvements to complement its state-of-the-art sample rate. Based around the Stealth FPGA technology that delivers the SD7’s acclaimed sonic quality, the SD Rack with Multiple Synchronous I/O is the ultimate upgrade for SD7.

Sample Rate Conversion

While the SD Rack converters can operate at 192 khz, you can also select other sample rate options for specific outputs – MADI at 48 kHz for broadcast or recording feeds, for example, or 96 kHz.

In other words, when used in conjunction with any SD console, the SD Rack will serve you as a multi-sample rate signal splitter that even allows you to use the ultra-smooth microphone preamps to replace the standard mic preamps of an analog or other digital console.

The Versatility of Gain Tracking and Splitting

The provision of built-in Gain Tracking allows another console or a broadcaster to take any of an SD Rack’s AES, analog, or MADI outputs at a stable level, irrespective of the microphone preamp settings on the SD console, covering a signal level range of ±40 dB. Splitting is also provided on the SD Rack’s analog and digital outputs, allowing you to split the input signals directly out to, for example, an analog or digital monitor console. Splitting and sample rate conversion is even offered on the two dedicated MADI SPLIT outputs.

These facilities have become increasingly in demand on complex shows with a potential combination of digital and analog consoles and broadcast feeds. The Gain Tracking and Splitting features – switchable per I/O card – simply allow an audio team to select whether or not outputs should follow the SD consoles microphone preamp settings.

Otherwise, you’ll find the familiar 56 input / 56 output arrangement, in blocks of eight, allowing you to populate the SD Rack with the I/O cards to suit your application. These include analog inputs and outputs, AES inputs and outputs, bidirectional AES input / output, AES-42, ADAT and Aviom. The cards themselves are hot-swappable, with the SD Rack automatically detecting the card that has been plugged in, and further I/O card options are already in the pipeline for future development.

Even More Practicality

DiGiCo have also taken the opportunity to turn the SD rack, quite literally, on its head. Reversing the previous design, the dual hotswappable power supply units, RGB backlit multi-function display, MADI and optical connections are now located at the top of the rack for fast access, above the I/O cards. The benefit? Your connector looms can remain in place near floor level, while the more frequently accessed components and control functions are right on top.

Other useful touches are ‘48 V present’ LEDs that light to confirm 48 V is present per XLR. A further LED indicates signal present at each analogue input, giving you a complete picture of activity on the SD Rack itself.

Audio connections to the console are completed by either a 2G Optocore optical connection.

Future Development includes Remote Setup and Monitoring

For even simpler setup configuration, the SD Rack USB Port feature allows remote monitoring and control of all SD Rack settings with an attached PC or Intel based Mac.


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