User's Manual Part 3

Screen Service SDT 501 UB-C ARK 1-T Operations
May, 2010 v 1.0 Page 3 - 66
Knob points can be added with a left-click of the mouse on the grid and deleted with a right-click,
drag and move a point to change the curve.
Each coefficient variation, due to curves change, is saved in the FPGA “runtime” memory
registers and dynamically changes the device’s output.
The tool is prevented to send an “overflowing” amount of data to the device: curve changes will
be applied only when the mouse button is released.
In the module grid, the red curve is used to monitor the current module curve calculating and
saving. The last saved coefficients are locally downloaded from the FPGA runtime memory
registers in order to redraw the curve.
Click two times the right mouse button on the grid to open the zoom menu. The “H” options are
used to horizontally zoom (x01,x02,x04,x08,x16). The “V” options are used to vertically zoom
(x01,x02,x04).
During saving actions are created two nonlinear pre-correction files:
• *.dpre files: files containing digital coefficients values.
• *.apre files: files containing analog coefficients values.
The following buttons allow the management of linear pre-correction files and the management
of the connection to port 5000:
• Save: used to save in the device memory the current curves setting. The previously
saved file will be overwritten except in the evet that no files have been saved before; in
this case a dedicated window appears in order to let the user name the new file.
• Save as: used to save in the device memory the current curves setting. The previously
saved file will be overwritten with a new name. in the evet that no files have been saved
before, a new file will be created.
• Read file: used to reload the last saved file.
• Export: used to download pre-correction files on the user PC. A browser window allows
the selection of the saving path.
• Release: release the connection in order to allow others remote machines to connect to
port 5000 (refer to Connection to port 5000 paragraph).
Files are separately managed in analog and in digital AGC mode.