|The team peel back a cover and remove one of the cell lids. (Photo credit: Joona)|
Then the cell arc is removed, the summator attached, and the cables connected. Tests are done to check the resistance of the summator, and thus check for any failed circuits.
|An ASTRON engineer fits a Y-polarisation summator. Note the test equipment on the cover nearby. (Photo credit: Joona)|
There are two summators per tile, so after the X-polarisation summator is done, the adjacent cell is opened to the done the Y-polarisation. Finally, the covers are all put back, and the anchor lines re-attached to the timber frame sets.
|RAL and SGO staff re-secure the cover on one of the tiles. (Photo credit: Joona)|
It is tricky work. With so many cables, one must be very careful to ensure that no mistakes are made. We had a system of checking and cross-checking each others work to ensure that the installation was error-free.