Power connectors
At first, connect the screw, labeled with "GND" to Ground (e.g. to the 19"-Rack the L-Band Switch Matrix is mounted in). After that connect the L-Band Switch Matrix to 110-240V A/C via IEC connectors. The L-Band Switch Matrix is running with only one connected power supply as well, but we strongly recommend to use two different power supplies to ensure the maximal system reliability of the L-Band Switch Matrix. In case of one power supply breaking down, the L-Band Switch Matrix will still be running without problems.
Power supplies
The picture above shows a 8x8 L-Band Switch Matrix with opened frontplate. On the left side you can see the 2 power supplies. Other versions of the matrix could contain upto 4 power supplies. Handling and the position of the two additional power supplies is similar.
It is possible to change the power supplies while the L-Band Switch Matrix is running.To change a power supply, always disconnect the mains of the power supply that has to be changed and wait at least 10s (for internal discharge). Open the 2 screws with which the metal bar, that holds the power supplies in their position, is fixed.
ATTENTION: on the other power supply the mains voltage is still available.
Now pull out the power supply that has to be changed and disconnect the cables connected to the power supply. After that it is possible to remove the power supply.
To install a power supply, you have to do the same things in reverse chronology: Put the power supply into the slide rails, connect the power cables to the power supply and slide the power supply completely in. After that fix the metal bar, that fixes the power supplies, with the provided scews.
ATTENTION: To avoid the possibility of an electrical shock, never handle with a power supply that is connected to mains.