Installation
Hardware Considerations
The XLogic SDI-MADI is built in a 1U 19” enclosure. It is intended to be permanently installed in a standard 19” equipment rack. The unit has no internal fans and is cooled by natural convection. There are ventilation grilles in the top, bottom and both sides of the enclosure, and care must be taken to ensure that these are not blocked by cables or other equipment when the unit is installed. Do not install any other items of equipment immediately above or below to the SDI-MADI; the use of 1U blanking panels is recommended.
Power Supply Considerations
The SDI-MADI is fitted with two separate, auto-ranging switch-mode power supplies (PSUs). The operating voltage range is 90 to 264 V AC, 50/60 Hz. The internal power rails are diode-paralleled to the two supplies, and the unit will operate normally if only one PSU is powered or functional. For maximum protection when using both PSUs, the two AC inlet cables should be connected to mains circuits which are as independent of each other as possible. If redundant operation is not required, only one AC supply cable need be connected; either AC inlet may be used.
Fuses And Ratings
Each of the SDI-MADI’s PSUs has an internal resettable fuse for PSU protection. These fuses are no accessible to the user. The unit should be powered from a mains supply (supplies) fitted with an external HRC-type fuse (High Inrush Current) rated at 1 A.
Unit Connections
SDI Inputs
The SDI-MADI can simultaneously de-embed the 16 audio channels in each of four separate SD video signals. Four BNC sockets are provided a the rear panel for connecting the SDI inputs. The characteristic impedance is 75 . The SDI-MADI is compatible with all SDI formats up to 3G (2.9 Gbps and auto-detects between them. See the Technical Specifications on page 16 for full list of compatible
formats.
Each SDI input has an active “loop through” output to simplify the connection of further equipment. The outputs are fully buffered from the inputs and are re clocked. The SDI bit stream is otherwise unaltered.
