Date printed: 24.01.12
7
D21m System
The frame hosts one or two ‘High Density Link’ cards (short: HD Link),
providing the main audio connection to the DSP core. From the HD card(s)
the signals are redirected to the different types of I/O cards in the frame.
Therefore at least one HD card must be inserted in the frame.
The frame may be equipped with redundant power supplies, the status of
which can be displayed in the Vista console’s system surveyor page.
Please note that the rack mounting brackets may be installed either on the
front (as shown on the opposite page) or on the rear of the frame.
2.3 Hub Frame
The difference between a D21m frame acting as a hub or as a remote I/O
box is the type of HD Link and RS422 cards inserted. The HD Link card in
the hub frame hosts four RJ45 connectors for connection to the DSP core,
providing 192 channels (96 in case of the Performa core) of audio coming
from the DSP core through 2 cables into the frame (audio outputs), as well
as 192 channels from the frame through 2 cables into the DSP core (audio
inputs). The length of the high-density link cables must not exceed 10 metres
(30 feet).
If multiple remote I/O boxes are connected to one hub frame, more channels
need to be transferred to the DSP core. In this case it is possible to insert a
second HD card into the hub frame, expanding its capabilities to handle 384
inputs and outputs to the DSP core (192 outputs in case of the Performa core).
380 mm
* Rack mounting brackets may be installed on
front or rear of frame, depending on user's
preference.
*
*
426 mm
Connector
area,
approx.
50 mm
19" (482.4 mm)
3 U
(133.5 mm)
CARDS
POWER SUPPLY
SYSTEM CLOCK
IN
FAIL
IN
FAIL
96kHz
48kHz
RECONFIG
PRI 1
PRI 2
DIGITAL
ANALOG
CARD 5
CARD 4
CARD 3
CARD 2
CARD 1
CARD 6
HD CARD
HD CARD
CARD 7
CARD 8
CARD 9
CARD 10
CARD 11
CARD 12
2.4 remote I/O Frame
The frame placed remotely is equipped with a special MADI HD card. This
version of the card is not equipped with the Studer proprietary high-density
link but with standard MADI optical interfaces. This format allows transfer-
ring 64 channels of inputs and outputs between the remote I/O box and the
hub frame simultaneously.
Frame dimensions are the same as shown in 2.3 above.
2.5 Vista Surveyor Software
The surveyor on the graphic controller (GC) screen of the Vista consoles will
indicate the whole I/O system, including the health state of each I/O card and
the power supplies. If the hardware found at startup time is not identical to
what the system expects, the user is asked whether the expectations should
permanently be changed or whether the user has temporarily changed the
I/O configuration (such as having moved a remote I/O box to another place
