Nevion SDI-TD-3GMX-5 - Manual (Page 13)

HD-TD-3GMX-2 / HD-TD-3GDX-2 and SDI-TD-3GMX-5 / SDI-TD-3GDX-5 Rev. F
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5
Configuration and monitoring
Both multiplexer and de-multiplexer cards are self-configuring in the sense that they will
start working according to default factory settings once power and input signals are applied.
HD-SDI or SD-SDI video standards will be detected and handled automatically.
5.1 Configuration
Configuration parameters can be changed in two ways: via changes to the DIP switches or
via the system controller Multicon GYDA. The lower DIP switch of the module is labeled
OVR. If this DIP is set to the ON position, the module will not accept commands from the
Multicon system controller, but will instead be controlled entirely by the position of the rest
of the DIP switches. Multicon GYDA will however be able to monitor the module and
retrieve the current configuration (this will be stored to enable hot-swap functionality with
another module under Multicon control). Conversely, if the OVR switch it is set to the OFF
position, the other DIPs are disregarded altogether and the module is under full Multicon
GYDA control. As delivered from the factory, all DIPs should be in the Off position. The
module will then be under Multicon GYDA control.
5.1.1 Configuring the multiplexers from Multicon GYDA
The HD-TD-3GMX-2 product contains a subset of the features found in the SDI-TD-3GMX-
5. The description below contains blocks that will only be found on the full featured product,
the SDI-TD-3GMX-5. The picture of the HD-TD-3GMX-2 configuration page is provided for
reference, see Figure 4.
Starting from the top of the page on the SDI-TD-3GMX, the following things can be
set/adjusted:
Card label: This field enables the user to set a name for each module (Actually, it’s the slot
in the frame, as the label will persist even if the card/backplane combination is replaced by
a completely different module). The name will show up above the card type on the info
page and on the configuration page, and it will also be shown as a mouse-over text when
the mouse cursor is held over the card’s icon in the pictured rack.
Locate card: Flashes the 4 LEDs on the front of the module at about 0.5 Hz for the number
of seconds the user specifies. This is intended to help find a card quickly in a large setup.
Firmware upgrade: The firmware for the onboard microcontroller and the FPGA can both
be upgraded, if needed. This red line only shows up if the Multicon GYDA system controller
has found a folder containing Flashlink firmware files. Contact Nevion Support if you need
an updated firmware.
Mode of operation: (Stored setting) The multiplexer can work in two distinct ways. It can
simply pack two HDs into one 3G stream, or it can pack 4 SDs into one HD before packing
the resulting HD with another HD from input 1. In the first case, the 2 HDs can each be
replaced with a single SD, but still only transport 2 channels over the 3G transport stream.
This will be handled automatically. In the second case, the HD on input 1 can be replaced
with an SD signal. This will also be handled automatically. The other 4 inputs will only
accept SD, and any HD signal on these inputs will simply be ignored.
The reason for splitting the operation into two modes can be seen when considering what
would happen when the card was fed 2 HDs and 3 SDs simultaneously. It would obviously
not be possible to transport all these signals over one 3G stream, so something has to be
given priority over the other inputs. The key is really whether input 2 is HD or SD, so if this
toggled between HD and SD, it would not only mean that one channel was unstable, it
would also affect whether inputs 3-5 would be transported or not. Hence the user is made
to make the choice. A corner case is when the mode is set to be HD/SD+4xSD and inputs
3-5 have no signal at all. In that case it is possible to transport an HD from input 2 (and it