Datasat AP20 Installation And Operating Manual page 135

AP20 Installation and Operating Guide
After the flattest response is achieved by adjusting the projector optics, the final slit loss correction is made
using the Parametric Filter Settings, see
Figure 18.
F4.4.5. Slit Loss EQ
When Slit Loss EQ is selected a graph of the slit loss adjustment is shown on the right of the screen (see
Figure 18 below). The goal is to achieve a flat response. Each frequency level should meet reference
("db" on the graph) as shown. Note the roll-off after 12.5kHz.
Menu (System) → Formats → Format Options → Film Options → Film Setup → Slit Loss EQ
A projector select button is located below the graph: Projector 1 = Proj1 and projector 2 = Proj2. Press
the button to select.
The Level number above the Proj button is a general indicator of the input signal level that can be used to
confirm there is a valid signal. In
Figure 18 the Level is -7dB, which is typical when playing pink noise.
A button to allow switching between Right and Left channels is located to the right of the Proj button.
Press this button to select the channel.
Appendix F. H338 Optical Film Card Option
Figure 17 – Focus
Figure 18 – Slit Loss EQ
F-14
Version 1.2
Document #: 9301H39200 1.2