W3A Southern Africa One Way Internet

Hi, guys, I am new on this forum so help as much as possible. I have paid for the One Way Internet access provided thru, W3A Satellite and have now received everything, dish 1.2m Space KU Band, PCI DVB Card, Now the dish does not have elevation markings at the back. I do not know it's offset angle. I have all the details Azmith and elevation angle for my site, also have compass and inclinometer, Can someone help on how to go about, The dish seems not to go further down(pointing down).